Question about 1992 Mercury Grand Marquis

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I have a short in 92 grand marquis. i went to start the car the other day and it just made a click and the dome lights went dim. i unhooked the battery and took the starter off and had it checked it was good put it back didnt make a diffence. hooked the battery back up and started pulling fuses and pulled the number 4 fuse inside the car under the dash. with the fuse puged in my battery meter says 9.3 when i take it out it says 12.3

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  • shadnorris19 Jul 23, 2010

    battery is good i started another car with it

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The problem sounds like it was the battery the whole time. Your battery can have all the volts in the world but if it does not produce enough amperage it will not turn the starter over. This sounds like a dead cell issue. To be sure, Disconnect the Negative battery terminal and connect the vehicle for jumping but put the ground cable someplace on the block. Start the vehicle and disconnect the jumper cables. If the vehicle continues running the Alternator is doing it's job and you need to replace your battery. Another way to check for a dead cell in the battery is to get a cell tester from Walmart or an auto parts store and test each cell. Also you could take the battery to the Auto Parts store and ask them to test it. They will test for charge and Load capacity.

Posted on Jul 22, 2010

  • James Young Jul 23, 2010

    I have had situations where a battery started another vehicle but still didn't start the one I was working on. There are a lot of variables. If you feel the battery is good and believe there is a short then the end result is simple. You need to trace all the wires that connect to the battery and starter and Alternator until you find the grounded wire. Make sure you test the ignition and fuel pump relay's as well. If there is a grounded wire it is most likely on the main power line to the starter. If you have an after market alarm installed make sure you have by passed it before you start testing for shorts. The Alarm could be interfering with your system, especially if you have a starter interrupt switch. These switches are normally installed under the dash and splice into the ignition switch wires and are prone to shorting out.























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