Question about 2003 Mercury Grand Marquis

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Alternator & battery replaced won't start - 2003 Mercury Grand Marquis

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Does the car crank over? if so, unplug the maf sensor and try, it may not be letting the fuel pump control module come on

Posted on Jul 23, 2013

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Replaced alternator & battery won't start


CHECK BATTERY GROUND AND CABLE TO STARTER ALSO CHECK STARTER WATER IS BAD ON STARTERS AND GET WET AND SHORT OUT MEASY GOOD LUCK

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I would say you burned a fuseable link in the wiring harness.
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Have someone check the wires coming out of the back of the alternator. The big wire should have battery voltage, the small wires energize the alternator when you start the engine.

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My alternator won'charge and it and the battery


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The car won't start let alone keep running. The battery light was on for awhile but the car was running fine. Then I was driving and it just started sputtering and died and even when I jump it it only...


Get the battery & the alternator checked (Autozone, O'reilly's or even Pep Boys can do that for free). If the alternator is out or going out, it's not charging your battery - that means everything electrical in your car is now trying to run directly off the battery & draining it (it doesn't take long - especially if the lights or A/C is on). If those check out ok, take it into a mechanic & have them run a diagnostic - you may have a relay out. Good Luck.

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1 Answer

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