Hey guys, I have an automatic 86 trans am with a 305TPI, if i put the pedal to the floor it wont rev past 3300rpm and other times the motor will rev up but will accelerate pretty slow until I hit 2nd gear. In park it will rev up fine. I replaced the fuel filter which got rid of the initial bogging problem I was having but now that problems gone I noticed this one. occassionally the check engine light will go on while driving but will turn off after a minute or two. I have a feeling its low fuel pressure and am gonna check that soon but I was wondering what other possible reasons could be causing this, thanks

 

Still got a cat on the exhaust?
A blocked cat will give similar symptoms

Pull the engine codes and see if anything showing ; you may actually have a engine problem

 

Original fuel pump? Yeah, it sounds like it's either starving for fuel or the cat is plugged.

 

Ya I was gonna gut the cat later, I just cleaned the throttle body cause my gas pedal stuck last night and I figured out the throttle was catching up on a hose clamp the idiot before me put on the air intake duct, I go to rev the car and it wont rev past 2500, it feels like its bouncing off a rev limiter but its obviously not

 

Just scanned it and got codes 34, 44. 34 is the MAF and 44 is for the o2 sensor saying its burning lean

 

Work through the diagnostics before throwing $$$ at it

http://www.chevythunder.com/maf_code_34.htm

http://www.chevythunder.com/o2_sensor_code_44.htm

 

Went to gut the cat and sliced my hand open when a bolt finally broke free and my hand slammed into a sharp edge of the flange, 9 stitches later I checked the maf and found a spacer for where the tubing connects to the maf all bunched up infront of the maf, I replaced the maf and it runs like 1 million bucks, that spacer must have blocked airflow and burned out the old maf, thanks for everyone's help.