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#1
05-04-2019, 09:52 PM
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2005 grand prix gtp compG
I have a 2005 Pontiac grand prix gtp comp G that has no check engine light on and idles fine but at 2000 rpm the boost gauge is maxed out and has very low power. Any suggestions?
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#3
05-05-2019, 05:04 AM
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Re: 2005 grand prix gtp compG
I guess it's possible but the converter was replaced about 2 years ago. I would think it would last longer than that. I'll check it out. Thanks.
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#4
05-06-2019, 11:44 PM
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Re: 2005 grand prix gtp compG
Simple check is this:
Get car to normal operating temp..... From a dead start, lay into it, if it revs up to 3K with no power and doesn't shift stop...... Now from a dead start, LIGHTLY accelerate.....if the vehicle shifts and gets up to speed, it's usually the cat....
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#5
05-08-2019, 08:20 PM
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Re: 2005 grand prix gtp compG
Thanks. It was a clogged cat. I got that fixed. Now I need to figure out why it burnt up so quickly.
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#6
05-08-2019, 09:53 PM
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Re: 2005 grand prix gtp compG
If it was an aftermarket cat, not all cats are alike.
This guy explains it better than me: http://www.bobsmuffler.com/reasons_f...er_failure.htm
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