high idle

[90 t4r]

ok so the other day my truck started idling real high i think it may have blown the head gasket (3.0) could blowing the head gas cause it to idle high or do i have another problem some were

 

[Flintstone]

My experience is a vacuum leak can cause erratic or high idle. Often you can smell antifreeze at the exhaust pipe if you have a blown head gasket.

 

[fishrod]

Has it gotten a whole lot colder where you are recently? My idle has gone up (when the engines cold) about 500rpm since its gotten so cold. Once the engine warms though, its back to normal.

 

[90 t4r]

yea its been cold but im talkin about 1500-2000 rpm is were it sits at idling

 

[fishrod]

Yep, mine gets up to 2000 when its really really cold. When its just cold (around 0C) its about 1500rpm until its warmed up a bit.

 

[jakeRunner805]

Yep, mine gets up to 2000 when its really really cold. When its just cold (around 0C) its about 1500rpm until its warmed up a bit.

i was about to ask this question too.. when i purchased mine it was idling fine.. but after a rainy night.. it was idling at 18000 in the morning.