Question about 1992 Mercury Grand Marquis
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
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Posted on Jan 02, 2017
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