Help : 09 Cobalt SS makes no boost
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Help : 09 Cobalt SS makes no boost
So recently here the last month or so i have been trying to figure out why my cobalt is only making 0~5 psi. Ive scoured the forums and asked many of my cobalt owning friends for ideas and so far everything has come up dry with no changes in performance. It all sort of started after I pulled into a shop to get my transmission fluid replaced and on the way out of the building my resonator got caught on something on the floor. Resonator cracked open like a pop can and so i took it off and had it repaired. i had no issues the whole time the resonator was off of the car. After getting it back and reinstalling it my issues began. So far I have done these.
- Boost leak test at least 5 times
- Cleaned and checked BPV for damage (found no signs of wear)
- Replaced MAP sensors with gms1 to match my tune
- Replaced MAF twice
- Replaced boost control solenoid
- Replaced wastegate actuator solenoid
- Replaced wastegate
- Replaced EVAP purge solenoid
Last edited by Kalob09SS; 08-27-2021 at 02:35 PM. Reason: Added replacement part to the list
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i don't remember exactly what code it was of the top of my head but i have an hptuner that i use to scan for codes and i can log with it. i just don't know enough yet about the ecu to figure that out myself
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Got a log from the other day and will be making a new one today once my laptop is charged and i read through some saved code logs from my torque pro app on my phone and the code it throws is P0101
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So ive discovered unplugging the MAF sensor lets the car build up to 15psi but after replacing the MAF sensor yet again now with the sensor plugged in the car wont run it will bounce rpms at idle until it eventually tries to build boost and dies. any ideas?
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I'd do it for the $15.
https://www.rockauto.com/en/catalog/...onnector,10183
https://www.rockauto.com/en/catalog/...onnector,10183
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What OP didn't mention is if they have one of those MAF cable extensions either (for CAI). Those are a little more $. Just in case, here's a link for that -> https://www.ebay.com/itm/17237081172...4AAOSwZJBX-9Ks
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Tenacious James
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