Question about 2003 Nissan Altima

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I have a 2003 3.5.I switched the battery and now it idles up and down.

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Might need some time for the compute to relearn, I would drive it a few days, IF this keep going on , take it to a repair facility they will need to run an engine analyzer on it to see if any of the sensors OR even something might have gotten loose or disconnected, retrace your steps you took to install the battery and make sure you connected everything and see if anything in that location might have gotten disconnected.

Posted on Aug 25, 2010

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