Question about 2005 Buick LaCrosse

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Loss of power

I put a BUNCH of miles on my car -- have a 68-mile commute one way. So, my 2005 Lacrosse just went out of the extended warranty (102k miles). From day one, this car has had a hesitation upon acceleration -- kind of like a fuel line issue. The RPMs go way down (it's even stalled twice) and pushing the gas pedal does nothing. It will "catch" after a few seconds and then take off normally. Can't find a correlation between where I buy gas or the weather temp or conditions or really anything. It's so sporatic that the dealer hasn't been able to fix it -- they can't make it happen. But, as soon as I drive off their lot, it does it again. One time and one time only, I did get a blinking check engine light. I called OnStar to get them to run a diagnostics while the light was blinking. The only thing that they could tell me is that it was getting a "loss of power" error. So, anyone else out there own a 2005 Lacrosse or have any idea what's up with this lemon of a car??? Additional Details - The dealer has looked over the fuel system; I've added fuel injector cleaner to it; I've added gas treatment; the dealer changed out the catalytic converter. Can't think of what else to try.

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  • jasperrr210 Jan 03, 2009

    i have the same problem or when i drive more then 10 miles turn the car off for a bit and come back to leave it won't start right a way i have to wait like 15-20 min if not longer for it to start up again and then when it starts it has a very rough idle and has super loose of power my mechanic said the o2 sensor, a tune up, fuel injectors. i replaced the o2 sensor nothing. the car just has a tune up, nothing it still does the same thing and i don't want to keep dumping money into this car.

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There is a service bulletin that deals with this exact issue. The code is a P2138. Water may be entering a body harness in the left hand kick panel. The bulletin # is 07-06-04-019

Posted on May 14, 2008

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