Picture this: you've installed a new programmer that adds 150-plus horsepower and more than 200 lb-ft of torque to your 7.3L Power Stroke. The only problem is, your E40D-4R100 automatic transmission ...

Code readers are diagnostic tools that every car owner should consider owning. Having one of these is as important as carrying a spare tire or a fire extinguisher in the trunk. Back in the day, before ...

Q: I just read your column responding to a question about ignoring a check engine warning light. I have a 2004 Lexus ES330 that had a check engine warning light. After a couple of weeks I was able to ...

Q:Hello, I am a longtime Corvette enthusiast and have owned many Corvette models. Unfortunately, I have never been in the financial position to purchase a new model and usually buy cars between 10 and ...

You hear a new, disturbing noise coming from your engine, open the hood, look around, and find nothing. Now what? Before you reach for a conveniently-placed torque wrench to try the ol’ “love tap,” ...

Onboard diagnostics (OBD) systems have been around since the 1980s and were developed to help limit harmful automotive exhaust emissions. Between 1988 and 1995, U.S.-built vehicles came with what's ...

Most of us cringe in fear when the check engine light in the dashboard of a modern 4x4 is tripped on. Your mind begins to spin in frustration wondering what could have triggered it, how bad it really ...

This story appears in the April 17 print edition of iTECH, a supplement to Transport Topics. Troubleshooting dysfunctional trucks from afar through the use of remote diagnostics can help carriers ...

We earn commissions from purchases you make using links in our articles. Learn more. If your car or truck’s check engine light is on, there’s a stumble when accelerating, or if the transmission just ...