RAY: The knock sensor, as the name strongly implies, senses when there’s a knock occurring in your engine. TOM: And it signals the computer to yell, “Come in!” RAY: That’s awful. Engine knock is also ...

One of the common causes of lost power and performance in diesel-powered vehicles is a malfunctioning nitrogen oxides (NOx) sensor. These sensors monitor NOx levels in the vehicle’s exhaust. If they ...

Starting with 2015, a series of recalls have been conducted by South Korean car companies Hyundai and Kia on account of faulty engines that are some instances were known to catch fire. As it appears, ...

DEAR CAR TALK: I have a 2015 Kia Sportage with 25,000 miles on it that I purchased new. At about 15,000 miles, I noticed a slight ping when slowly climbing hills. I tried changing gas, to no avail.

Q: I love your column, and thanks for helping us all out with the poltergeists in our cars! I have a 2018 Chevy 2500HD Silverado with a 6.0 V-8 and the trailering package. I pull a 6,000-pound trailer ...

Dyno tuning is great. But, a dyno-tuned engine can't always be tuned for the stress it might see on the street, let alone something like the continued abuse of, say, a track day. This is especially ...