What would cause the engine in a 1998 Grand Cherokee with a 4.0L to start idling at 2000 RPM? It is not displaying any codes at all.
Dec 26, 2010 at 11:32 AM
Idling Issue
FSHRMN7
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A vacuum leak. Check all hoses by listening for a hissing sound. You can also use a can of starting fluid but be very careful and do it before the engine gets hot.
A faulty throttle position sensor may cause an erratic idle, but you'll usually get a check engine light on the dash. If you get one, have computer scanned
A faulty throttle position sensor may cause an erratic idle, but you'll usually get a check engine light on the dash. If you get one, have computer scanned
Feb 3, 2011 at 7:54 AM
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