1999 Mercury Villager Q&A

1999 Mercury Villager Question: what can cause a rough idol? had a tune up at 100,000 now 130,000

It idols rough when it is gear when stopped at red light or waiting in traffic. No check engine lights on -
Answer 1
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? -
Comment 1
plugs,wires cap ,rotor about 2 yrs ago. 1 fuel injector over the summer -
Comment 2
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. -