Jeep Wrangler Forum banner

1993 YJ 4cyl engine High Idle

4K views 12 replies 6 participants last post by  Fourpointohhhh 
#1 ·
Idles around 2,000 rpm as soon as it warms up. It was shooting up to 2,500-3,000 when I would slow down. Mechanic replaced the intake gasket which fixed the really high idle but it still doesn't go any lower than 2,000.

New
Map sensor
Throttle position sensor
Idle control valve
Vacuum lines
Throttle body gasket

Throttle body has been cleaned with card cleaner several times. Other than the idle it has no mechanical issues.no check engine light and I disconnected the battery for 30 min to clear all faults. It got better after the battery disconnect but only for 10-15 miles. No one can figure it out.
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top