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1997 Buick Lesabre Would a dirty or bad MAF cause my car to shut off? The problem i am having is that when i start my car up in the morning, i drive to work just fine. i then drive around the property until about 5pm. when i go home, everytime i step on the brakes my car shuts off. another thing is when i drive on the freeway, if i am driving 55 and coasting, the car starts to idle up and down constantly. but if i take my foot off the gas then reapply it stops, but will do it again..

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Hi! Yes a faulty MAF can really cause this problem. The MAF has big contribution on engine performance specially on the idling and vacuum supply. The unusual performance of your car is caused by the MAF. Once replaced you'll be good. Hope this helps and thank you for using FixYa!

Posted on Aug 28, 2010


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Posted on Jan 02, 2017


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