It idols rough when it is gear when stopped at red light or waiting in traffic. No check engine lights on
what can cause a rough idol? had a tune up at 100,000 now 130,000 on 1999 Mercury Villager
1 answer 2 comments
Rough idle can be caused by basic ignition tune up items (plugs, wires, cap, rotor...), or even EGR flow issues. Not to mention fuel injectors. Your "tune up" - what did it include?
plugs,wires cap ,rotor about 2 yrs ago. 1 fuel injector over the summer
You could have another injector. You could have an ignition system issue again. Only way to tell anything is to have a diagnostic tool hooked up to check specific components...can help.