Car won't start. No lights no crank. Nothing

Asked by Jan 15, 2018 at 05:32 PM about the 2005 Mercury Grand Marquis

Question type: Maintenance & Repair

I have a 2005 mercury grand marquis. Drove fine
this morning. 4 hours later no crank no noise no
lights. Nothing. Battery is fine which rules put
alternator as far as I know. No lights would seem
to rule out ignition switch..... help!

2 Answers

66,455

So the battery being good rules out the alternator being the problem? No lights rules out ignition switch? Wrong on both counts. First off the battery needs to be charged and tested. Secondly the battery cable and ground cable connections need to be absolutely clean, free from corrosion and tight and this includes the connection to the starter and the short cable that goes from the positive battery cable to the under hood fuse box. Also check the battery ground connection at the engine as it also need to be clean and tight. Once you have good battery voltage and clean connections then see if it will start. Was the check engine light on?

7,080

low voltage is the issue. if the battery is 4 years old or older you should replace it.even though you had it tested does not mean its good.

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