08-10 SS Turbocharged General Discussion Discuss the 2008 - 2009 Chevy Cobalt SS Turbocharged. On sale since the second quarter of 2008.

Gm stage 1

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Old Jun 23, 2010 | 07:01 PM
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From: Mo
Question Gm stage 1

Has anyone experienced the following......

95 degrees outside today.....my balt was like in limp mode.....would not go over 5 er 6 lbs of boost....run like crap......anyone ?
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Old Jun 23, 2010 | 07:18 PM
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From: Chandler, AZ
It's 95* out here for 1/2 the year and I have GMS1...never had problems like that. Still boost around 20-22psi. I have noticed the AC draws a TON of power, especially when starting out or downshifting it's not as responsive, but that's about it...

Might be a problem with the GMS1...somtimes the Map Sensors come off or aren't installed properly, which will cause the car to go into "limp" mode.
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Old Jun 23, 2010 | 07:24 PM
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From: New Minas, Nova Scotia, Canada
There are a bunch of us that's having this issue.
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Old Jun 23, 2010 | 07:57 PM
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From: Mo
Originally Posted by DoMiStIc_RuSh_06
There are a bunch of us that's having this issue.
Yup , as I research it I see that , that sucks ! mapp sensors need soldering,sum times replace maf sensor.....**** that means return to stock too !
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Old Jun 23, 2010 | 08:17 PM
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From: Fredericksburg, VA
Originally Posted by Cpanthers85
It's 95* out here for 1/2 the year and I have GMS1...never had problems like that. Still boost around 20-22psi. I have noticed the AC draws a TON of power, especially when starting out or downshifting it's not as responsive, but that's about it...

Might be a problem with the GMS1...somtimes the Map Sensors come off or aren't installed properly, which will cause the car to go into "limp" mode.
I totally agree, driving with the AC on sucks! RPMs drop way to fast and the engine lugs a bit in higher gears, especially uphill. But I would check your MAP sensors, I know the one on the lower charge pipe (cold side) has a tendency to come loose or not have a good seal with the pipe.
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