ok i have an 1987 Pontiac Trans Am 305 TPI. my problem is my car bucks like crazy. when the car is cold is bucks as soon as i start it. i notice the rpm guage bouncing. when the car is warm the car bucks between 1500-2000 rpm. i have no loss of power when im on it only when im maintaining speed or off the gas. and the best part is when it rains i get a check engine light. i pull a 33 and a 34. and my bucks even worse. almost like it goin from high gear to low gear on it s own. PLEASE someone know what to do. im tired of guessing. and im tired of mechanics being wrong

 

Bucking and jerking is a classic sign of a bad wire somewhere. And since you get MAF codes 33 and 34, I'd look at the wires that go to the MAF and the two MAF relays.

 

ok and what if there checked the ones are the firewall at least. what s the relay i see by the big canister in the front passenger side. i see a relay there and what s the canister do can i take it out

 

ok so found my problem. control module was the culprit.