Q My question pertains to what an IAC does. Recently my car began stalling occasionally and was difficult to start. My repair guy diagnosed the cause as a “dirty throttle” and cleaned it. This helped ...

Q: My 1988 Mustang has an excellent idle. However, when I stop at a traffic light/stop sign occasionally the engine will shudder, shaking the car a little, and then die. Modern vehicles use an idle ...

Question: I have a 2001 Ford Expedition with the 5.4-liter V-8 and 103,000 miles. At 98,000 miles, it developed a rough idle and began stalling at stop signs. My local mechanic noticed low fuel ...

If your car starts juddering when you're driving it can be very alarming, especially if you are driving at speed or on a busy road. Many of us are unaware of what causes our cars to make this sudden ...

A: The reader writes that his 1987 Mercury with a 5-liter V-8 has started to run rough at idle and under light acceleration. One dealer mechanic said the fuel injectors should be cleaned at a cost of ...

DEAR CAR TALK: My 1997 Mercedes E420 sits in the garage for months before being called on for the occasional road trip. Lately, I've been experiencing a rough idle condition, where the engine rpm ...