Well I have a 89 GTA with a 350 TPI, i recently replaced the injectors and it ran great for a few days and then out of no where it started running like poop again. Im going to check the TPS Sensor but if it isnt that i have no idea where else to go, any suggestions. The car starts idles like crap, wont rev up and in general just runs like complete ****. Please any suggestions or ideas if you need to know anything more just ask. HELP!!!!!!!

 

Just recently had the same symptoms with my IROC, turned out it was the MAF sensor, MAF sensor relay AND the burnoff sensor relay. total cost, doing it myself, was around $220 pictures of relays and sensor below.

http://s662.photobucket.com/albums/u...ent=relays.jpg

 

i replaced the maf already how did you know those relays where bad?

 

my mechanic/buddy is a GM master tech AND a third gen owner, lol, he said they generally go bad at the same time as the MAF

 

take your intake plumbing off and spray throttle body cleaner in the intake, these cars are bad about carbon build up. Just follow the directions on the can.

 

Check your fuel pressure on the rails to see what you have when you first turn the key. I am not sure of the specs but that would be a great start. Fuel starvation will definitely make these motors run terrible.

 

Well out of no where i got a vats code so im putting a bypass in and then im going to replace the computer to eliminate that problem. Than im going to check fuel pressure and it cant be carbon buildup becuase i actually pulled the entire tpi system off and soaked it in simple green to break down all the carbon.