The car had a tune up a few months ago with a new a new air filter and spark plug wires. Acceleration and gas mileage are great. The problem, is when I'm at a stop light after sixty seconds I get a sudden drop in the RPM, this last for a second for almost every sixty seconds while I'm stopped at a light, but the car does not die out. This only happens when the car has been driven for at least twenty minutes. When I put the car in park the same thing, but the rpm drop low enough for the car to die. What is this?
Nov 9, 2010 at 2:16 AM