Question about 2005 Buick LaCrosse

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Engine power lost

Sometimes when I'm driving the engine stops excelleration, almost as if the car has a governor on the engine. The tackometer goes from 22,000 down to 7,000 rpms. The engine does not shut off but when you push the excellerator nothing happens.

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  • thecalves Apr 19, 2009

    I have the same problem, going down the highway cruising at 65 - 70 mph then out of no where, it feels like the engine wants to stop. then it catches and works okay. I can go for a month before it happens again. The last time it happened, the engine did cut out on me, going 65 in the passing lane. I have 42000 miles on it. I finally decided to take it to the dealer, hopefully they can figure out what is wrong, without costing me to much money.

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I had the same problem. It sounds like your accelerator position indicator or (API) is going bad.

Posted on Feb 07, 2009

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Try these in order. Change the fuel filter,check the fuel pump pressure at speed,fuel pressure regulator vacuum at the hose or it's operation,plugged exhaust.These are the most likely causes.

Posted on Dec 29, 2008

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