Idles to fast

Tiny
V-STAR07
  • MEMBER
  • 1995 ISUZU RODEO
  • 6 CYL
  • 4WD
  • MANUAL
  • 200,000 MILES
I have a 1995 isuzu rodeo 3.2L V6. When it cool outside it idles above 3000 RPMs at a stop. When you drive it down the road then push in the clutch the idle jumps back and fourth between 900 to 2000 RPMs. When you come to a complete stop the RPMs jump back up above 3000 RPMs. It keeps doing this even when the engine has warmed up.
Tuesday, December 28th, 2010 AT 11:19 AM

2 Replies

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
First check for a vacuum leak from one of the hoses and/or intake manifold (gasket). Then check for dirty/sticking throttle. These are the easiest things to check so you do those first. Also, the reason the rpms fall when you engage the clutch: you're putting a load on the engine. It's design to do that.

But you're definitely idling too high. If no vacuum leak, scan computer.
Was this
answer
helpful?
Yes
No
Tuesday, December 28th, 2010 AT 2:24 PM
Tiny
LEGITIMATE007
  • MECHANIC
  • 5,121 POSTS
I agree, the above mentioned is most likely the problem, you may also want to clean/check/change the Idle air control valve(IAC)
Was this
answer
helpful?
Yes
No
+1
Tuesday, December 28th, 2010 AT 9:38 PM

Please login or register to post a reply.

Related Engine Idle High Content

VIEW MORE