If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard ...

I live in New Jersey, one of the states that mandates inspection for all vehicles newer than 1995. My daily driver, a Jeep Cherokee, happens to be a 1996 model year with an OBD-II sensor, meaning I ...

Can you remove an O2 sensor with a standard wrench? Learn when you need a special socket, what's in a kit, and how thread chasers can save your DIY project.

Q I paid $258 to have my oxygen sensor replaced because the service-engine-soon light came on. This wasn’t so bad, as I’ve had 83,000 miles of virtually trouble-free use from the car. What really ...

Hello. I've had an ongoing problem with my 2008 Corvette for over a year. I have reoccurring fault codes of P0171 and P0174, fuel trim lean on bank one and two. I have had the car to four shops and ...

Modern cars rely on a dense web of sensors to manage everything from fuel delivery to collision avoidance, and when one fails, the result can range from a minor annoyance to a four-figure repair. I ...