I have a stock 89 iroc 5.7 that has hard starting problems. I've already tracked down the maf as being the problem. The iroc starts and stalls unless I tap the gas pedal. If I disconnect the maf it starts way better without stalling, but runs rough. So I went to autozone and bought a cardone part #74-4712. I installed it and the car starts the same. So I remove the maf from the throttle body with the harness still connected. The car starts without tapping the gas pedal, no stalling, and runs way better. Thinking the maf is defective I go back and exchange it. I install it and the car behaves the same way unless I remove it without disconnecting the harness. I need help, please.
Are all maf sensors the same? I read somwhere that the maf part #74-4712 is made for 86-87 irocs and part #55877 are made for 88-89.
I dont have the original so I dont know what it had originally. The maf that I replaced, I left that one at autozone, not thinking of checking part number.
Thanks,

 

Sorry for double post...freaking sprint cell/service sucks.

 

Anyone...please.