My truck has a stumble

smoken02

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Joined
Feb 6, 2007
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Every now and then my tuck will stumble when I hit the accelerator at a dead stop. It doesnt do it every time but at least once a day. Nothing else is acting up. No check engine light. I havent checked for any codes. It is a split second thing. Any ideas?
 
sounds fuel pressure related... what psi do you have when the stumble occurs?

Lavon
 
BLACK OUT said:
Was that 10 PSI at WOT?

Yes 10psi at WOT. I have only got it to stumble with the comp on. Hasnt stumbled with it off yet. It will stumble even in park if I smash the throttle.
 
possible IAT sensor if its really cold out... mine stumble a little when temps are 20* or lower but when it warms up it runs good.

Just sent my comp in for a new harness and a software update and it made no difference... Edge thought since its only when very cold out it could be caused by the comp lying to the ECM about the air temp.

I also just bought a new MAP and it didn't make a differnce. I have a new IAT on order.

Lavon
 
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