01 z28 surging and cutting out bad HELP
01 z28 surging and cutting out bad HELP I have a 01 m6 car and it is having a problem i cant figure out. It is a cam car with as cast 243s, bolt ons blah blah. It was on a mail order tune when i got it and at low rpms (below 1800-1900rpm) it surged BAD. I recently had it tuned at a reputable shop in mckinney tx and it didnt fix the problem. I asked the tuner and he said its not the tuning its acting like a miss. In 1st, 2nd, and maybe 3rd it surges bad and in the higher gears if you put a load on it this it cuts out. The car has msd wires, new plugs, and a new fuel filter. So what cpuld be the problem? Thanks!
Thats what i had thought too. But the day i took it to the tuner i swapped in some new tr55s. The wires are msd and look good but were on the car when i got it a few months ago. Maybe they are breaking down?
You can check the resistance of the spark plug wires with a multimeter. MSDs are supposed to lower resistance than OEM wires, but in any event the resistance should be 1,484 ohms or less.
As an aside, your symptoms sound more like a vaccuum leak, or a bad tune to me.
As an aside, your symptoms sound more like a vaccuum leak, or a bad tune to me.
Thanks for the reply. Ive looked for vacuum leaks, ive pulled the intake off and all. I'll check the wires this afternoon i just wasnt sure how much resistance they should have til now. I was positive the mail order tune was causing the problem til i took it to the tuner and it still had the exact problem
When you reinstall the intake following the sequence referenced here:https://ls1tech.com/forums/14331572-post2.html
When you reinstall the intake following the sequence referenced here:https://ls1tech.com/forums/14331572-post2.html
Yep always have. No vacuum leaks. Thanks for the help
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Is the SES light flashing? Time to pull some codes perhaps. After market pulley? I had a bad one from ASP a few years ago, car cut out at WOT(flashed the SES), no issues at low speed though. Pulled the pulley and replaced with the stocker, issue resolved.
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Verdad Gallardo No ses light. And stock pulley. Im stumped.
Try swapping out your MAF sensor. I had this happening on my car. When I pulled really hard into 4000 rpms the check engine light would come on for the rear o2 sensors but never the MAF. I swapped the MAF out with a new one and it fixed the hesitation problems and the o2 codes
