4.0 lliter engine , how to adjust idle speed - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 08-25-2004, 08:31 AM
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4.0 lliter engine , how to adjust idle speed

My daughter's 94 Jeep with the 4.0 liter engine is idling to low when it is in drive ( around 450-500 rpm) and it will die on her every once in a while and it shakes a little bit while sitting at a red light. I would like to adjust the idle speed up just a little bit but I cannot see where to adjust it at, can someone please tell me who to do this?
Mike Francis
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post #2 of (permalink) Old 08-25-2004, 09:13 AM
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Re: 4.0 lliter engine , how to adjust idle speed

on the newer jeeps, a rough idle is a sign of something wrong. Look close at the vacume lines, do a tune up, and if that doesnt clear it up, have it hooked to a scanner.
the idle is controlled by the computer.
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