WHY IS MY VEHICLE IDLING HIGH?

1995 Jeep YJ

Tiny

BPLIPIEC

October, 6, 2011 AT 9:55 PM

When I start it the idle shoots up to 2000rpms. When I engage the clutch to shift it kicks down to 1000-150000 rpms. It also stays high when I'm driving. Just recently had the head gasket replaced. Also had radiator and thermostat replaced about the same time. Could this be affecting it?

1 Answer

Tiny

Dan_K

October, 6, 2011 AT 11:10 PM

I would begin by checking for vacuum leaks. I've attached 2 vacuum routing diagrams. The first is for the 2.5L, the second is for the 4.0L as you didn't specify which engine your Jeep has.

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