2004 Jeep Liberty Idling

Tiny
MARTIK99
  • MEMBER
  • 2004 JEEP LIBERTY
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 140,000 MILES
What could be the causes of the engine idling very fast? (What could I check/repair?)
Do you
have the same problem?
Yes
No
Wednesday, July 22nd, 2009 AT 11:54 AM

3 Replies

Tiny
DANAUTHIER
  • EXPERT
The idle is computer controlled, so there are no adjustments. Check for leaks in the vacuum system, Ckeck you vac hoses, look for a hose that is dissconnected, cracked or collapsed. A leaking intake can also cause a fast idle. Is your check engine light on?
Was this
answer
helpful?
Yes
No
Wednesday, July 22nd, 2009 AT 12:17 PM
Tiny
MARTIK99
  • MEMBER
Yes, the engine light is on. Thought I would ck. For vacuum leak(s) and then have the light/code checked by my mechanic (to save paying him to look for vacuum leaks that I can do). Please let me know if I should do anything else.
Was this
answer
helpful?
Yes
No
Wednesday, July 22nd, 2009 AT 12:39 PM
Tiny
DANAUTHIER
  • EXPERT
Knowing what fault code has turned on your check engine light will give you the place to start diagnosis once you've done the "quick checks" (visual check for faults like hoses and visual cracks or leaks in the intake) There is a standardized diagnostic flow chart for each fault code, your mechanic most likely has or has access to these.
If you have some mechanical knowlege and you feel conifdent about doing it, you can check the intake for leaks. This is done by filling a clean spray bottle (if it is a used bottle, I don't recommend using one that contained anything flamible, just to be safe) with water, starting the engine and spraying the water around the intake. If there is a small crack in the intake or leak in the gasket the water will momentarily fill the gap and the idle will reduce when the water is sprayed on the leak.
Let me know what you do.
Was this
answer
helpful?
Yes
No
Wednesday, July 22nd, 2009 AT 1:48 PM

Please login or register to post a reply.

Recommended Guides