Check Engine Light - 5 trips for repair??? - Pontiac G6 Forum
 
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post #1 of 7 (permalink) Old 08-11-2008, 08:31 AM Thread Starter
 
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Angry Check Engine Light - 5 trips for repair???

I'm going crazy with this...any help would be greatly appreciated!

I took my car to the garage to have front wheel bearings replaced and check why the "check engine" light was on...Since my car was running perfectly, I thought maybe due to hitting 60k that it wanted routine maintenance.

Garage said my computer "quit communicating" so he re-programmed it. Since picking it up, my mileage and power are both down 25%...then the engine light went back on. Took it back, he reset it and cleaned the fuel line (rail?). But, same problem w/ mileage & power.

I have a 2006 G6 w/ 4 cylinder... used to get up to 34 @ 65mph down a flat highway and 26 mixed driving. Now 18 mpg in mixed driving.

Any thoughts?
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post #2 of 7 (permalink) Old 08-11-2008, 06:27 PM
 
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very strange ... i'd take it to the dealer and see what he did to the computer
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post #3 of 7 (permalink) Old 08-12-2008, 02:06 AM
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wow 25% power loss on the 2.4l that must really suck. but my best suggestion is to take it to the dealer since your mechanic can't fix the problem.
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post #4 of 7 (permalink) Old 08-12-2008, 05:34 AM
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Quote:
Originally Posted by coupe_gtp View Post
wow 25% power loss on the 2.4l that must really suck. but my best suggestion is to take it to the dealer since your mechanic can't fix the problem.





Mike
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post #5 of 7 (permalink) Old 09-11-2008, 07:36 AM Thread Starter
 
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The dealer diagnosed it as the Cat Convertor, replaced it for free under their 80k warranty and BAMMM... I'm back in business! It worked... mileage back to 32 hwy / 28 mixed & runs strong - these L4's have the feel of a V6... happy again
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post #6 of 7 (permalink) Old 10-08-2008, 06:02 PM Thread Starter
 
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UPDATE on engine light...
The Cat Converter was replaced & the car has been running well... BUT NOW the check engine light has now come back on, very slight engine stutter from time to time, but only a slight difference in fuel economy. The lights goes on & off every 500 miles. I'm not going back til something falls off this thing... don't know what to think
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post #7 of 7 (permalink) Old 10-08-2008, 07:42 PM
 
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uhhh open the hood and check to see if all the air hose are connected ... mine had a problem like that ... all i had to do was put the air hose back on and it ran perfect and the light went off by itself
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