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2.5L ('98-'01) Rough idle after revs


WHE3LER

New Member
Joined
Apr 28, 2014
Messages
1
Vehicle Year
1991
Transmission
Manual
Hey I got a 99 Ranger with the 2.5/M5OD so it’ll start right up and come to a damn near perfect idle but if you give it gas it’ll come down and idle super rough (engine shaking and at like 500 rpm) but goes away with added throttle.
I changed the spark plugs, checked the IACV and it’s okay. Cleaned the EGR and sprayed carb cleaner around the manifold and didn’t notice any change in RPM. I also did the dollar bill test on the exhaust pipe and it passed. Kinda at a loss now since it’s not a recessed valve or spark plugs. Any ideas?
 

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