03 SSEI Terrible Gas Mileage????? - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat

2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-17-2010, 02:33 PM   #11
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No-Codes, similar situation: I wound up with a bad MAF but could not figure it out initially because the Check Engine light came on, then reset itself and took the codes with it (according to my mechanic). I had to drive around until the Check Engine light came on, then straight to the mechanic. He read the code which said bad MAF. Changed that and it'* been good since. Moral to that story; you may have a sensor going out or a dirty one.
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