I have a lt1 camaro that runs amazing until you go to get in it.then the car starts popping and backfiring,but the tach stays steady it doesn't jump around are anything it try's to keep going.but the sputtering and popping want let it
The opti is about a yeAr old with about a 10 to 15 thousand mile also with new plugs and a rebuilt trans and pcm what could this be its driving me crazy!!! Please help I will pay to fix it idk if they put the wrong pcm in the car. Are if the opti shaft is moving around when it has a load put on it but it only at 4500rpm,it's nice and smooth all the up there until it hit that spot then all hell breaks loose sound like it's trying to blow the exhausted of the car please help me!!!!
It's just so hard to believe it's the opti because the car run so good until that 4200 to 4500rpm point then it goes crazy but I plan on replacing it and hopefully it fixed it
I would get a direct reading fuel pressure test gauge with a hose long enough so you could tape it to the outside of the windshield so you can see it from inside the car.
Then go for a drive and see what the fuel pressure is when the misfiring starts at WOT
alright I'm guessing spark just order opti waiting on it to get here thanks I will keep y'all informed to see if it fixes it but what could cause it to run so rich
Alright pulled the opti it was like egged,the shaft moves and the assembly of it also moves up and down think it my problem🤞
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