2nd gear WOT car hits a wall - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
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post #1 of 4 (permalink) Old 02-28-2011, 08:53 PM Thread Starter
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Exclamation 2nd gear WOT car hits a wall

Well I have searched the older threads but have not found a solution to my issue.

When driving in 2nd gear WOT it will put hard, full boost, until I hit about 5100 rpms at which point the car hits a wall, it throws me forward and feels like the gas pedal goes dead. Doing some research on other cars having this issue I have come across ideas such as bad plugs/wires, fuel cut, fuel filter/pump. In first gear and third and fourth gear it pulls strong all the way to redline. Anyone else have this issue on their cobalt or have any other suggestions/ideas?

I do get a lot of crackling when driving from the exhaust, every time i hit this wall i quickly let off the gas of fear of back pressure. I know when i had cobb stage 2 on my STI it required a header as well, anyone think that a full unrestricted exhaust might help?

2006 Cobalt SS stage 2
Injen Intake
Vibrant streetpower catback
I do have the LSD in mine as well
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post #2 of 4 (permalink) Old 03-01-2011, 12:27 AM
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Check Ur tsp sensor
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post #3 of 4 (permalink) Old 03-01-2011, 07:07 AM
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IAm not to sure with a supercharger you dont want an back pressure. It sounds like fuel cut. Are you tuned?

I was beat by RKRamos.
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post #4 of 4 (permalink) Old 03-01-2011, 08:05 AM Thread Starter
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It is tuned, after doing some more runs I have found this only happens when i have 1/4 tank of fuel or less. More gas = easy fix haha
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