Automotive Field Theory

By Matt FanslowBusiness Technology Leisure Automotive Management

Automotive Field Theory episodes

April 09, 2025John Thornton Part 1 [E181]
Thanks to our Partner, NAPA Autotech Training
Diagnosing the Aftermarket A to Z website
Show Notes:
Introduction & Sponsor Message
Sponsored by NAPA AutoTech Training – Helping shops turn general technicians into profitable team members.
Matt introduces John Thornton, a highly respected instructor and presenter in the automotive industry.

Early Days & Mentorship
Matt and John reminisce about their first meeting in January 2020 at a training event in Minneapolis.
John’s early influence through his Underhood Service Magazine columns, which shaped Matt’s diagnostic approach.
Key articles that impacted Matt:
Trigger Modes (Auto vs. Normal/Lab)
In-Cylinder Pressure Testing (using a Fluke PV-350 transducer)
Current Probe Diagnostics (Fluke ADI-110S)

Diagnostic Awakenings
John’s guidance helped Matt diagnose a shorting fuel injector on a 1987 Chrysler Conquest Turbo, leading to a deeper understanding of inductive kick.
Importance of post-repair testing to solidify learning.

Documentation & Knowledge Sharing
John’s method of annotating wiring diagrams and keeping physical file cabinets for quick reference.
Transition from paper-based documentation to digital tools (e.g., PicoScope’s annotation features).

Evolution of Service Information
From Chilton/Motor manuals to Mitchell on Demand (disc-based) to modern OEM online portals (Toyota, Chrysler, BMW).
The power of hyperlinked wiring diagrams and 3D connector views in OEM service info.

Training & Public Speaking
John’s philosophy on preparation: Rehearsing presentations multiple times to ensure smooth delivery.
Handling technical difficulties (e.g., projector failures) by staying adaptable.
Encouraging techs to share knowledge through platforms like Vision Hi-Tech Training & Expo.

Teaser for Part 2
Next episode dives deeper into CAN bus diagnostics, multiair systems, and more training insights.

Key Takeaways:
Diagnostic growth comes from post-repair analysis and documentation.
Service information has evolved dramatically—OEM portals now offer unparalleled detail.
Effective training requires relentless preparation and adaptability.

Listen to Part 2 next week for more insights!
Thanks to our Partner, NAPA Autotech Training
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
54 min
April 02, 2025Mailbag Episode: Multimeters, Electrical Diagnostics and Drivability Tricks [E180]
Thanks to our Partner, NAPA Autotech
Matt Fanslow dives into listener-submitted questions, covering:
Multimeter recommendations (why he prefers insulation testers/meggers over basic DMMs).
Electrical diagnostic strategies (schematics, scan tools, and stress-testing circuits).
The "Flat Rate Test Drive" (a drivability diagnostic trick for load/PID analysis).
Gaming picks (Elden Ring, Assassin’s Creed Shadows, and Days Gone Remaster).
Scan tool advice for techs doing more drivability work.

Timestamps:
(00:00) – Intro
(02:33) – Multimeter recommendations: Why Matt avoids basic DMMs and prefers:
Fluke 1587 or Pico TA467 (insulation testers for EVs/future-proofing).
Used Vantage/Vantage Pro (graphing + scope functions).
Curien (Bluetooth-enabled multimeter).

(11:44) – Electrical diagnostic process:
Start with a wiring schematic.
Use a scan tool to check module inputs/commands.
Stress-test circuits (e.g., load with a headlight for power/ground checks).
Leverage relays for centralized testing (control/output sides).

(22:48) – Shoutout to trainer Richard Velko.
(23:17) – "Flat Rate Test Drive" explained:
Monitor PIDs (load, MAF, MAP, O2 sensors) during WOT pulls to isolate drivability issues (fuel vs. restriction).

(34:42) – Gaming corner: Elden Ring, Assassin’s Creed Shadows, and Days Gone Remaster.
(38:53) – Scan tool recommendations for drivability:
HP Tuners (budget-friendly, fast data logging).
Used Snap-on Solus Edge/Ultra (enhanced OEM data).
Shop responsibility (tools should be shop-provided!).

Quotes
"I don’t buy just a pure multimeter anymore... Get an insulation tester. You’ll need it for EVs/hybrids." – Matt
"The ‘Flat Rate Test Drive’ stresses the engine while watching PIDs to split the problem in half." – Matt
"For drivability, HP Tuners is my top pick—great data logging without breaking the bank." – Matt

Tools & Resources Mentioned:
Multimeters: Fluke 1587, Pico TA467, Vantage Pro, Curien.
Diagnostic Tactics: Wiring diagrams, scan tool bi-directionals, current ramping.
Games: Elden Ring, Assassin’s Creed Shadows, Days Gone Remaster.
Scan Tools: HP Tuners, Snap-on Solus Edge, TopDon XTool.

Final Thoughts:
Matt’s takeaway? Invest in versatile tools (like megohmmeters) and lean on schematics/scan tools to avoid diagnostic rabbit holes.
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
32 min
March 26, 2025Leadership Lessons From "The Shot" [E179]
Thanks to our Partner, NAPA Autotech
In this episode, Matt dives deep into the world of leadership, drawing an interesting parallel between basketball and the world of auto repair.
In this episode, Matt discusses:
The significance of March Madness and The Shot—not the Michael Jordan moments you might expect, but the shot in the 1992 NCAA tournament between Duke University and the Kentucky Wildcats.
Insights into Coach Mike Krzyzewski's (Coach K) leadership style, particularly during high-pressure moments, and how it parallels the leadership needed in running a shop.
How Coach K's calm, confidence, and ability to empower his players to take ownership in crucial moments played a pivotal role in Duke's success.
The importance of leadership that encourages autonomy, confidence, and creating an environment where your team can thrive and make decisions that align with your vision.
A breakdown of Christian Laettner's mindset during the game and how the Duke team overcame a seemingly lost situation with just 2.1 seconds left on the clock.

Matt takes us through the dramatic ending of the game and how Coach K's simple yet powerful leadership moment shaped the outcome, drawing lessons for managers and leaders in the aftermarket industry.
This episode isn't just for basketball fans; it's for anyone looking to inspire leadership and develop a high-performing team. By trusting your people, giving them autonomy, and showing calm, quiet confidence, you can help your team overcome challenges and come out on top.
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
25 min
March 19, 2025Automotive Diagnostics, Badgers, and ADAS Calibration [E178]
Thanks to our Partner, NAPA Autotech
Matt Fanslow and Sean Tipping discuss the complexities and evolving terminology within the automotive diagnostic field, particularly regarding immobilizer systems and advanced driver-assistance systems (ADAS). They further explore challenges related to module identification, service information discrepancies, and the tools used in modern auto repair, including stories about acquiring specialized equipment and encountering frustrating technical issues.
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
1 hr 4 min
March 12, 2025We All Want to Be Special [E177]
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

Key Highlights:
Matt reflects on the idea of self-awareness and balance, emphasizing that "everything comes from you" and that we are all part of a larger matrix of experiences and growth.

Vision Conference Recap:
Matt shares his experience at the Vision Conference, where he faced a challenging drive through a snowstorm and crosswinds to get there.
He highlights the hands-on training sessions he participated in, including:
Key Cutting and Programming Class: Co-taught with Andrew Sexton, where attendees got to physically cut keys and program them using a Honda ignition system.
Pico Training: A full day of hands-on training with Scott Shotton, focusing on practical, car-side diagnostics.
Tech Talks: Featuring Garrett Jacobson (HP Tuners) and Zeb Beard (Thermal Imaging), both of whom delivered high-energy, informative sessions.

Key Takeaways from Vision:
HP Tuners: Matt learned new functionalities of the tool, even after using it for over five years. Garrett Jacobson’s class demonstrated how intuitive and powerful the tool can be for diagnostics.
Thermal Imaging: Zeb Beard emphasized the importance of using thermal imagers regularly, even when it doesn’t seem immediately necessary. His session focused on diesel diagnostics but applied to all vehicles.

Personal Reflections and Connections:
Matt shares heartfelt moments from the conference, including dinners with industry friends like Dan Baumhardt, Matt Hall, Kevin Looney, and others.
They reminisced about Harvey Chan, a beloved figure in the industry who passed away too soon, and the impact he had on everyone.
Matt reflects on the duality of emotions—being sad about losing someone but happy to share stories and memories.

Behind-the-Scenes Stories:
Matt dives into the importance of understanding the "behind-the-scenes" of how things are created, whether it’s a business, a movie scene, or even a professional wrestling match.
He shares an iconic wrestling story about Stone Cold Steve Austin and Bret Hart, highlighting how collaboration and trust led to one of the most memorable moments in wrestling history.

Themes of Authenticity and Sharing Knowledge:
Matt discusses the tendency in the industry to want to feel "special" or to exaggerate success stories.
He emphasizes the importance of being honest about how things are achieved, whether it’s diagnosing a tough problem or building a successful shop.
He encourages technicians and shop owners to share their real stories, even if they involve luck or being in the right place at the right time.

Filling Your Own Bucket:
Matt reflects on the need for self-validation and filling your own "bucket" rather than constantly seeking external validation.
He stresses the importance of being honest with yourself and others, giving credit where it’s due, and taking pride in your work without exaggeration.

Key Quotes:
"Set the freaking thermal imager on your diagnostic cart and start using it, even when you don’t know why."
"At some point, you’re going to have to fill your own cup. You’re going to have to be content with yourself."
"The real stories, if somebody could tell them, didn’t take away from the magic. It’s the art, the craftsmanship, the creativity that’s magical."

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
29 min
March 05, 2025Pre-VisionKC 2025 Mailbag [E176]
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

Key Topics Discussed:
Blade Runner Monologue Appreciation:

Matt opens the episode with a reflection on the iconic "tears in rain" monologue from Blade Runner.
He shares the behind-the-scenes story of how Rutger Hauer improvised the line, making it one of the most memorable moments in cinema history.
Matt expresses his love for behind-the-scenes stories and the genuine, unfiltered insights into success and creativity.

The Role of Luck in Success:

Matt discusses the often-overlooked role of luck in achieving success.
He references the "iceberg" analogy of success, where hard work, talent, and drive are below the surface, but luck plays a significant role.
He emphasizes the importance of giving credit where it’s due and acknowledging the contributions of others.

Mailbag Questions:

Do You Believe in Ghosts?: Matt shares his thoughts on ghosts, explaining why he doesn’t believe in them and how he finds the idea more exciting than scary.
Fuse Testing: Matt dives into his preferred methods for testing fuses, emphasizing the importance of using a test light with an incandescent bulb and checking for corrosion, especially in rust-prone areas.
Loss Leaders in Business: Matt discusses the concept of loss leaders (e.g., free diagnostics, cheap oil changes) as a marketing strategy. He explores the pros and cons, including the risk of devaluing services and setting unrealistic customer expectations.
Cell Phones in the Shop: Matt shares his perspective on allowing cell phones in the shop, acknowledging their utility as tools for diagnostics and service information but warning against distractions.

Upcoming Events and Classes:

Matt teases his upcoming classes, including a hands-on Pico training session with Scott Shot and a key class with Andrew Sexton.
He highlights Tech Talks featuring Garrett Jacobson on HP Tuners as a diagnostic tool and Zeb Beard on diesel diagnostics.

Key Takeaways:
Behind-the-Scenes Stories: Matt’s passion for genuine, unfiltered insights into success and creativity shines through, whether discussing Blade Runner or the realities of running a business.
The Importance of Evidence-Based Diagnostics: Matt emphasizes the value of using data and evidence to support recommendations, whether in diagnostics or business decisions.
Balancing Loss Leaders and Profit: While loss leaders can be an effective marketing tool, they come with risks, including devaluing services and setting unrealistic customer expectations.
Cell Phones as Tools, Not Distractions: In the shop, cell phones can be powerful diagnostic tools, but they must be used responsibly to avoid distractions.

Memorable Quotes:
"All those moments will be lost in time, like tears in the rain." – Matt reflecting on the Blade Runner monologue.
"Luck plays an uncomfortably significant role in success, and people don’t like to hear it, but the data is overwhelming."
"If you give away things, you start devaluing them." – On the risks of loss leaders.
"Cell phones are step one in us slowly becoming more and more cybernetic."

Call to Action:
Check out the Aftermarket Radio Network for more shows on business, marketing, and communication.
Attend Matt’s upcoming classes to learn more about diagnostics and tools like Pico and HP Tuners.
Share your thoughts: Do you believe in ghosts? What’s your take on loss leaders? Let Matt know on social media or via email.

Links and Resources:
NAPA Auto Tech Training
Aftermarket Radio Network
Blade Runner (1982) – Watch the iconic "tears in rain" scene.
HP Tuners – Explore this underutilized diagnostic tool.

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
26 min
February 26, 2025Fuel Trims [E175]
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

Introduction:
Fuel trims are a common topic in professional forums, classes, and diagnostics, often leading to bold diagnostic decisions.
Matt shares his experience of quickly diagnosing vehicle issues using fuel trims, even before leaving the parking lot.

Key Challenges in Discussing Fuel Trims:
The more you learn about fuel trims, the more nuanced and complex the topic becomes.
It’s difficult to generalize fuel trim behavior across all vehicles, as each system has unique characteristics.
Fuel trims are just one piece of data that must be factored into a broader diagnostic process.

What Are Fuel Trims?
Definition: Fuel trims are adjustments made to the base fuel schedule by the engine control unit (ECU).
Matt credits Matt Ragsdale on iATN for one of the best explanations he’s seen.

Two Primary Fuel Systems:
Speed Density Systems:

Relies on the Manifold Absolute Pressure (MAP) sensor and engine RPM as primary inputs.
Engine control algorithms tend to be more complex.

Mass Airflow (MAF) Systems:

Uses the Mass Airflow Sensor (MAF) and crank sensor (RPM) as primary inputs.
Simpler in design compared to speed density systems.
Modern systems often blend elements of both speed density and MAF systems.

Closing Thoughts:
Matt emphasizes the importance of understanding the nuances of fuel trims and how they vary across different vehicle systems.
He plans to dive deeper into the topic in future episodes, providing more detailed insights and practical examples.

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
35 min
February 19, 2025A Billion Monkeys vs Goals [E174]
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

Key Topics Discussed:
The Infinite Monkey Theorem:
Matt uses the analogy of infinite monkeys typing on typewriters to explain the importance of clear communication and direction in achieving goals.
Just as monkeys randomly typing will eventually produce meaningful work, employees without clear guidance will struggle to achieve desired outcomes.

Leadership and Communication in the Workplace:
Leaders (owners, managers) must set clear goals, expectations, and provide a path to achieve them.
Vague goals like "make more money" or "break records" without a clear plan lead to confusion and inefficiency.
Employees need tools, resources, and direction to succeed, rather than being left to "bang away on typewriters" hoping to get it right.

The Role of Communication in Relationships:
Clear communication is essential not just in the workplace but in all relationships.
Without expressing needs, goals, and expectations, misunderstandings and inefficiencies arise.
Direct communication, though uncomfortable at first, improves over time and leads to better outcomes.

Translating These Ideas to Auto Repair:
In the repair shop, having a clear diagnostic and repair process is crucial.
Veteran technicians often take their knowledge for granted, making it challenging to mentor newcomers.
Providing resources (e.g., links to training, manufacturer guidelines) helps less experienced technicians build foundational knowledge.

The Importance of Following Procedures:
Referencing Technical Service Manuals (TSM) or Factory Manuals (TFM) is critical for both learning and legal protection.
Following established procedures ensures consistency and provides a fallback in case of disputes or litigation.

Key Takeaways:
Clear Communication is Key: Whether in leadership, relationships, or auto repair, expressing goals and expectations clearly is essential for success.
Provide Direction and Resources: Employees and technicians need more than vague goals—they need tools, training, and a clear path to follow.
Follow Established Procedures: Using manufacturer guidelines (TFM) ensures quality repairs and protects against legal issues.
Encourage Curiosity and Learning: Sharing resources and fostering curiosity helps technicians grow and improve their skills.

Memorable Quotes:
"If you don't set goals and expectations, you're essentially handing your employees typewriters and asking them to just start banging away on the keys, hoping they get your idea right."
"The moral of this episode is: Don't expect miracles without clear communication and direction."
"Direct communication, though uncomfortable at first, gets easier over time and leads to better outcomes."

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
Links referenced in this episode:
napautotech.com
mattfonslopodcastmail.com
aftermarketradionetwork
20 min
February 12, 2025 Ford APIM and Jeep WCM Adventure [E173]
Thanks to our Partner, NAPA Autotech
In this episode, Matt Fanslow dives into two detailed vehicle diagnostic and repair stories, highlighting the challenges and solutions involved in modern automotive repair. The episode is packed with technical insights, troubleshooting tips, and lessons learned from real-world scenarios.
Key Topics Covered:
2013 Ford Edge SYNC System Connectivity Issue
Problem: Intermittent cell phone disconnection from the SYNC system.
Diagnostic Process:
No DTCs (Diagnostic Trouble Codes) found.
Matt linked his phone to the system and tested it without issues.
Discovered the Accessory Protocol Interface Module (APIM) had never been updated since the vehicle was manufactured.
Challenges:
Attempted to update the APIM using Ford’s FDRS (Ford Diagnostic and Repair System).
Encountered issues with a USB driver link and access problems.
After multiple attempts, the SYNC system displayed a black screen.
Resolution:
Successfully updated the APIM after performing a capacitive discharge (CD) and updating the Front Control Interface Module (FCIM).
Verified the update through Ford’s SYNC website and Motorcraft service.
The client confirmed the connectivity issues were resolved.
Takeaway: Always verify software updates and be prepared for unexpected challenges during programming. Persistence and proper tools are key.
2014 Jeep Grand Cherokee Wireless Control Module (WCM) Replacement
Problem: After replacing the WCM, the shop couldn’t add keys to the system.
Diagnostic Process:
The shop used an aftermarket scan tool and a dealer-provided PIN code to replace the WCM.
Attempted to add keys but failed, suspecting the keys were locked.
Matt suggested trying an aftermarket key, which was successfully added, making the vehicle drivable.
Challenges:
Discovered the PIN code provided by the dealer was incorrect.
The Passive Entry Module (PEM) required a matching PIN code to share data with the WCM.
The shop had to replace the WCM again with the correct PIN code.
Resolution:
Matt used an Xhorse tool to unlock and renew the original keys.
Successfully added the original keys and performed a PEM replacement.
The vehicle was fully functional.
Takeaway: Accurate information (e.g., correct PIN codes) is critical for successful repairs. Proxy systems add complexity, and having the right tools (e.g., immobilizer tools) is essential.
Key Lessons from the Episode:
Importance of Software Updates:
Outdated software can cause compatibility issues, especially with newer devices (e.g., iPhones).
Always check for updates and follow proper procedures when programming modules.
Challenges with Aftermarket Tools:
Aftermarket tools can have limitations, especially with complex systems like proxy key systems.
OEM tools and manufacturer resources are often necessary for advanced diagnostics and programming.
Persistence and Problem-Solving:
Complex issues may require multiple troubleshooting steps and collaboration with other professionals.
Filing Service Improvement Requests (SIRs) and reaching out to dealers or manufacturers can help resolve persistent issues.
Client Communication:
Keeping clients informed throughout the diagnostic and repair process builds trust and ensures satisfaction.
Action Items:
Ford Edge:
Verify the APIM update was successful and ensure the phone connectivity issue is fully resolved.
Jeep Grand Cherokee:
Properly program the original keys by sharing key data from the WCM with the Passive Entry Module (PEM).
Final Thoughts:
This episode highlights the intricacies of modern vehicle diagnostics and the importance of staying informed, using the right tools, and maintaining a problem-solving mindset. Whether dealing with software updates or complex proxy systems, persistence and attention to detail are key to successful repairs.
Next Episode: Stay tuned for more technical content and real-world repair stories on Diagnosing the Aftermarket, A to Z!
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel
The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
The Aftermarket Radio Network
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life.
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level.
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching.
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest.
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size.
22 min
February 05, 2025Top Online Training Resources for Automotive Technicians [E172]
Thanks to our Partner, NAPA Autotech
Matt Fanslow recommends a variety of resources for automotive technicians beyond standard service manuals.
Thanks to our Partner, NAPA Autotech
NAPA Autotech’s team of ASE Master Certified Instructors are conducting over 1,200 classes covering 28 automotive topics. To see a selection, go to napaautotech.com for more details.
Contact Information
Email Matt: [email protected]
Diagnosing the Aftermarket A - Z YouTube Channel

The Aftermarket Radio Network: https://aftermarketradionetwork.com/
Remarkable Results Radio Podcast with Carm Capriotto: Advancing the Aftermarket by Facilitating Wisdom Through Story Telling and Open Discussion. https://remarkableresults.biz/
Diagnosing the Aftermarket A to Z with Matt Fanslow: From Diagnostics to Metallica and Mental Health, Matt Fanslow is Lifting the Hood on Life. https://mattfanslow.captivate.fm/
Business by the Numbers with Hunt Demarest: Understand the Numbers of Your Business with CPA Hunt Demarest. https://huntdemarest.captivate.fm/
The Auto Repair Marketing Podcast with Kim and Brian Walker: Marketing Experts Brian & Kim Walker Work with Shop Owners to Take it to the Next Level. https://autorepairmarketing.captivate.fm/
The Weekly Blitz with Chris Cotton: Weekly Inspiration with Business Coach Chris Cotton from AutoFix - Auto Shop Coaching. https://chriscotton.captivate.fm/
Speak Up! Effective Communication with Craig O'Neill: Develop Interpersonal and Professional Communication Skills when Speaking to Audiences of Any Size. https://craigoneill.captivate.fm/
29 min

About Automotive Field Theory

From the publisher's feed

Automotive Field Theory explores the forces that shape automotive repair, including the ones measured with a meter or oscilloscope and the ones that cannot be found on a wiring diagram.