Question about 2001 Buick LeSabre

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Check engine light on, engine sputters during excellaration

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  • moneyshaker Jun 17, 2009

    Thanks HotChevy1965 for your solution. The mechanic checked the code from the computer and it said it was the Mass Airflow Sensor. He checked a price for me at $146, but I went to a junkyard and picked up a used one for $45. I am waiting for him to install it and I will let you know the outcome...

  • moneyshaker Jun 21, 2009

    OK, so it definitely is the Mass Air Flow Sensor..The mechanic installed the used part I bought from a junkyard. It fixed the problem. Inside the MAFS, is a thin copper wire that runs to a switch, it detects air temp and velocity at which it being sucked into the intake manifold and adjusts the rich lean mixture of the fuel that the jets are spewing. In my case (which is usually why this piece fails), the the thin copper wire inside snapped and broke due to age....or it got wet. so it stopped doing its job, but I saved $100 getting the part at the junkyard....Thanks for you help

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  • Buick Master
  • 14,036 Answers

Scan it.sound like egr valve sticking open or leaking.restricted fuel filter and air filter.dirty injectors.pvc valve is stuck open.

Posted on Jun 15, 2009

  • Jonah Oneal Jun 22, 2009

    dont buy mass air flow sensors at junk yard .because you taking a chance .it could last a week or two weeks.you will have the same problem.car at junk yard been setting too long.parts rust and dry rott.

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