Power loss

[jenningsj]

Ok ive looked through old posts for 2 days now and none of them duplicate exactly what i have. at wot no power other than that it runs great, great idle, starts fine hot and cold, 1/4, 1/2, 3/4 throttle fine, runners open fine no engine light either.....is it a cat, maf sensor, would appreciate any feedback.

 

[Ishodu]

Sounds like it could be a MAF issue. Can you check your codes? Take a look in the How do I section for instructions on how to get the codes for free and quite easy to do.

 

[rubydist]

tps or mafs are likely candidates, but check codes to see if there are any to help you narrow it down.

 

[Vnuk1]

MAF unplug it and drive it with it unplugged, I'll pretty sure that's your problem cause I had this exact thing happen to me. Starts fine and drives fine but when you go WFO it falls flat on it's face..

 

[jenningsj]

you guys were dead on, thanks, that and there were 2 upper intake leaks and egr valve was bad when i smoke tested it:woo-hoo:

 

[SHO_POWER]

This helped me as well....defective MAF on my '92

 

[eacyde]

MAF unplug it and drive it with it unplugged, I'll pretty sure that's your problem cause I had this exact thing happen to me. Starts fine and drives fine but when you go WFO it falls flat on it's face..

This is my same issue. If I unplug the suspect MAF, will the problem go away?