It idols rough when it is gear when stopped at red light or waiting in traffic. No check engine lights on
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1999 Mercury Villager
Question: what can cause a rough idol? had a tune up at 100,000 now 130,000
Answer #1DaveJHM December 25, 2010, 21:14Master
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?
ReplyVisitor, December 27, 2010, 05:11
plugs,wires cap ,rotor about 2 yrs ago. 1 fuel injector over the summer
ReplyDaveJHM, December 27, 2010, 21:16Master
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.