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Dear Doctor: I have a 2003 Dodge 1500 pickup truck. There is a problem in the fuse box power module. I have corrosion in the printed circuits that is causing some items not to function, namely the interior lights and power mirrors. I’m having no luck with used boxes and a new one cannot be found (it’s been discontinued). The pickup truck is great other than this problem. It has the 4.7-liter V-8. Any guidance you can give me would be appreciated.
Michael
Dear Michael: I’ve seen a lot of faulty fuse box modules due to rot on many makes and models. When it comes to discontinued parts, the dealer usually can try to find them through outside sources that have bought up the old inventory. There are also some electrical specialty shops that rebuild components. We use a company called BBA Remanufacturing in Taunton, Mass. I would start with the Chrysler Jeep dealer parts department we use in Norwood, Mass., at 781-762-6540. Be sure to have your truck’s VIN number when you call.
Dear Doctor: I own a very well-maintained 1998 Cadillac Sedan DeVille. I’m replacing the fuel filler tube on the bracket (due to rust); however, the rubber hose that connects the filler tube to the fuel tank has been discontinued. The original part number for the rubber hose is #25690673. I’m having trouble locating this part. What should I do?
Walter
Dear Walter: At my shop we make up gas lines on a regular basis when running into this type of issue. We use a Dorman brand product, which has multiple fittings and line sizes. Many major big part stores sell lines ready to use, too. A good technician should be able to make up the lines for you.
Dear Doctor: I can use your help with my 2000 Ford Taurus. Can a rack-and-pinion seal on the driver’s side be replaced, leaving the rack in the car? The boot and seals are available to buy.
Frank
Dear Frank: I have never replaced seals in a power steering rack unit while in the vehicle. You will need to research the project further. Check online for any YouTube videos on examples for what other people have done.
Dear Doctor: Why do some car companies use belt drives when others use chain drives, as belt drives have to be replaced at 80,000 miles and chain drives are permanent. What is the advantage of using a belt drive? Marty
Dear Marty: The initial reason for rubber timing belts was the limited amount of underhood space because of the vehicle design. Engines with timing chains take more space because the timing chain needs to be lubricated. Many auto manufacturers are now designing the engines with timing chains and getting away from the costly-to-replace timing belts. Correct engine oil is critical, as well as interval adjustments to prevent wear to timing chain and variable timing components of the timing chain, including the plastic slack adjusters and valves and solenoids.
Dear Doctor: I liked your recent comments on increasing tire pressure higher than the factory recommendations. I go beyond your practice of adding 3 to 4 pounds over the recommended pressure. I keep my front tires near the maximum pressure as stated on the tire and the rears about 2 pounds less. That means 43 to 44 pounds in the front and 41 to 42 pounds in the rear. Why? Better handling, a firmer ride and better fuel mileage. Premature tire wear has never been a problem. Steve
Dear Steve: You are the exception, as most owners do not keep an eye on their tires, especially air pressure and proper rotation. When I mention tire pressure I am suggesting the pressure listed on the tire placard, not the pressure listed on the tire sidewall.
Dear Doctor: I’m interested in the Mazda Miata MX-5. What is your opinion on the 2016 model? Barry
Dear Barry: The Miata has been around for many years and it has seen multiple upgrades and changes over the years. It has always been a fun car to drive, but never seemed to have enough power – until now. Power comes from a SkyActiv four-cylinder 2.0-liter with 155 horsepower. My Miata MX-5 tester had the six-speed manual, which is easy to use, thanks to a clutch that requires light pedal pressure to engage. EPA estimates are 27 miles per gallon city and 36 mpg highway, combined is 30 mpg.