Hi, ive got a 85 T/A with a lb9 305 tpi in it. I swapped the lb9 out of a 88 formula that i parted out a few years ago into it. It has ran great for the past few years but now all of a sudden it runs decent when its cold and when it gets fully warmed up it dies and runs like crap on restart. seems to be loading up and wont stay running. I found a bad injector and decided to replace them all with Bosch 3 19lb injectors and it runs better but still loads up and dies. ive cleaned the maf, replaced the O2 sensor and its still loading up. Im at a loss here and any ideas?

thanks

 

Not sure but a bad temp sensor can keep the ECM choking. I think you can just ohm them out to test. Test when cold start car and warm up and check again. I know you can bench test with a heat gun but better have a plug to slip in or loose your anti-freeze. good luck

 

i just replaced that and was about to replace the air temp sensor in the plennum, i noticed the maf was getting rather warm so i disconnected it after i shut it off when it was loading up and about to die. I restarted it and it idled fine no problems, took it around the block with it disconnected and it ran pretty good, kinda odd throttle response but ran well. I put a rebuilt maf on it and now it runs good. Has anyone seen a maf tpi system run with it disconnected? I was told it wouldnt run or would barely.

thanks

 

My son's camero had a bad ignition switch. He shuts his off by unplugging the MAF. Might still run if it is open loop. ( Not warmed up yet) Or in Limp mode. Good luck