peterklos

Hi I have a V6 that has a real bad hunting problem when idling.
when the engine is cold it runs ok soon as it heats up it runs like it has a real lumpy cam and hunts.
I have checked for any vacuum leaks , spark plugs and leads ,throttle intake etc , but cant find any faults
Any suggestions ?

squidix9

Sure there's no leaks?

wrbusa

I had O2 sensors that were so caked with crap they affected the idle to the point it sounded like an old v8. If you're unsure of the condition, check them out. You may also want to check injectors for flow pattern and vac leaks at the injector seals.