Question about Ford Mustang

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Replaced battery on my 2005 Mustang GT Convertible and a day later the check engine light came on, everything seems to be working fine other than this.

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Check engine lights are mostly related to the emmisions system and the number one most reported cause is that the gas cap is not on tight enough. The second is the oxygen sensor in the exhaust sytem. should have nothing to do with the battey unless it was without power long enough to lose the memory of the computer for these systems and they will need to relearn themselfs, which is not common. You can dive tha car withour worries, may get worse gas milage if there is an issue, but they system will reset itself after so many times of turning the key of and on. I am not sure on this model how many times it will take to clear if there is no issue. If it styays on say for a week. Take it to autozone or other parts dealer and have them pull the code from the computer and this will tell you what went bad.

Posted on Apr 01, 2011

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Stop by any good parts store (Autozone, Advance, etc...) and have them do an OBII scan (fault scan) pull codes - just in case there's a problem and have them reset your light. I suspect it just tracked the battery replacement

Posted on Apr 01, 2011

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