hi guys,

since having my car engine built by TEG and mapped by steve simpson, it has started to hunt for idle, it bounces between about 600rpm and 1300rpm.

i have been looking at archive threads and ppl seem to agree that its an o2 probe or a maf sensor...... would this make the car hunt for idle all the time????
because myn only hunts for idle when its cold...as soon as water temp hits 25 degrees C it idles perfectly at 900rpm....solid as anthing!!!!

anyone have ideas???? or is it still gonna be an o2 or maf????

thanks in advance for ur technical wizardry!!

ian

 

Ask Steve to look at the cold start map, it sounds like it may need modifying.

 

Coolant temp sensor does this too i think, and the idle air solenoid.

 

check your throttle body somehow the butterfly got bent on 1 we were working at and the b1tch was hunting like a good un. was totally baffled what it was changed just about everything.