opfor2
Full Access Member
It it's not one thing it's another!!!! I had a few extra $$ to play with so I replaced the Throttle body assembly w/ Genuine GM 12629992, MAF sensor w/ACDelco 23256991, and the Temperature sensor w/ACDelco 213-4514. Now when the engine is cold like early in the AM cold it sputters, stalls and backfires but once the engine is warmed up, she purrs like a kitten and the rough idle issue I had before is no more. I did notice that the new temp sensor's plastic part where you plug it in is black while the old OEM one was white. All parts where purchased from Rockauto. I'm going to which the old temp sensor back to see if the issue resolves. Any other things to look at??