On this episode of Classic Car Doctor podcast from July 18, 2015, Ron Ananian  discusses various car repair topics, answering listener questions:

1. Clifford’s 2003 Toyota Camry Issues:

   • Clifford has an exhaust leak likely caused by a flex pipe. Ron explains that repairing it requires welding and possibly replacing the catalytic converter, depending on the model. While replacing just the flex coupling may be an option, replacing the entire exhaust system could be more cost-effective long-term. Additionally, Clifford reports burning oil, and Ron suspects it’s due to worn valve seals, which is common for a car of this age. He advises staying with the recommended 5W-30 oil but suggests considering a valve seal replacement to manage oil consumption.

2. Charles’ Battery Acid Shelf Life:

   • Charles asks about the shelf life of battery acid, which can degrade over time. Ron explains that battery acid typically lasts 3-5 years and advises buying fresh acid to restore the battery. He also explains how older acid may cause performance issues and recommends checking the battery and acid for any deterioration.

3. Scott’s Jeep Cherokee Swap:

   • Scott wants to swap parts from a 1999 Jeep Cherokee into a 1997 model, including the engine and drivetrain. Ron advises checking the Vehicle Identification Numbers (VINs) and using an interchange guide to determine compatibility of parts. While the engines are similar, Ron cautions about potential differences in components like oil pans, sensors, and flywheels, and suggests some tweaking might be necessary for the swap.

4. Austin’s 1998 Mercury Grand Marquis Electrical Problem:

   • Austin faces intermittent electrical issues with his car, which dies unexpectedly despite a new alternator. Ron suspects a battery drain issue and suggests checking fuses, the lighting control module (which may have been recalled), or a potential fault with the keyless entry system. He advises performing a detailed diagnostic test to identify the exact cause of the drain before replacing more parts.

Throughout the show, Ron emphasizes the importance of diagnosing problems carefully rather than rushing to replace parts, and offers practical advice on vehicle repairs.

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