overboosting?? - Chevy Cobalt SS Forum : Chevrolet Cobalt SS Forums
 
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post #1 of 6 (permalink) Old 07-10-2007, 06:03 PM Thread Starter
 
Join Date: Feb 2007
Posts: 122
overboosting??

ok so here it is i just drove my car and the boost gauge is going psycho on me. its ocasionally spikeing up to 15 and even 20lbs on me now its not a constant thing but ovcasionally its doing it so does anyone got any ideas when the problem started i had switched out my airfilter to a AEM high flow before that it had the filter that came with the INJEN C.A.I. the car seems to be running fine i havent noticed any problems with the car so my guess is that the gauge is just about to take a dump on me. or perhaps i should get my car re-flashed but idunno any ideas out there....
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post #2 of 6 (permalink) Old 07-10-2007, 07:00 PM
 
Join Date: Aug 2006
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man i dont' know why it would be doing that. i know that if your belt is loose it will slip and that would cause it to spike to 15 or 20. so check that........are you getting stage 2 from gm or what. because intense racing has a stage 5 for the same price as gm's 2. just a thought
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post #3 of 6 (permalink) Old 07-10-2007, 09:49 PM
 
Join Date: Jul 2005
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why would a loose belt cause more boost? if anything it would cause less.... sounds like a bad MAP sensor to me. btw stage 2 from GM is easier/cheaper to install and you keep your warranty
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post #4 of 6 (permalink) Old 07-11-2007, 11:04 AM Thread Starter
 
Join Date: Feb 2007
Posts: 122
yea i plan on getting the GMPP stageII actually i already got the money for i just wanna fix this problem before i do anything else to the car so how do you think i can fix it?
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post #5 of 6 (permalink) Old 07-19-2007, 10:13 AM
 
Join Date: Jun 2005
Posts: 597
It could be a bad sensor just have it scanned to find out.

A clogged cat can also cause over boosting but who knows.
codyss is offline  
post #6 of 6 (permalink) Old 07-22-2007, 12:04 PM Thread Starter
 
Join Date: Feb 2007
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yea it was a sensor acting retarded all is well now
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