Rough idle
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4th Gear
Joined: Nov 2022
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Rough idle
I have a 1997 f150 5.4L since it has gotten colder out it has had a rough idle on occasion while driving. I would let off the gas peddle and it would then be fine. A few days ago it got real bad and it wouldn't stop with the rough idle until the truck was almost to full operating temp. Then be perfectly fine. I cleaned the throttle body and intake manifold with throttle body and air intake cleaner. (It was really bad) it ran perfectly fine for about 24 hours and now has the rough idle back again just not as bad. New plugs and coils about 6 months ago. Just did an oil change and had the egr pipe replaced about a month ago. Has also been checked for vacuum leak and there are no leaks. Help!
Fleet Owner
Joined: Oct 2005
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From: Kentucky
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