Thread: bad news 16v
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Old 09-25-2002, 09:51 PM
Hilton Smith
Posts: n/a
Rough idle

For what its worth, my son's 89 Mustang 5.0L used to get a rough idle and I would disconnect the rubber/plastic air supply at the throttle body and use a rag wrapped around my finger sprayed with carb cleaner to clean inside of throttle body after rotating throttle plate 90 degrees. His throttle body and sometimes plate accumalated a sooty residue that apparently would cause the throttle plate to stick when it was in the almost closed position with small movements, i.e. idle. Takes about 20 minutes and doesn't cost anything - give it a try - and good luck.

Hilton Smith
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