Question about 1999 Mercury Cougar

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New battery and altenator battery wont hold charge

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It is possible either or both are bad. You can get them checked free at most Autozone, Oreily,or Advance parts stores.

Your old units should have been checked before you bought new ones. The problem, if both new parts test good, would be the wiring in the car. Make sure that you connected the wires when you installed the Alternator.

Tip****The plug in Alternator wire which has the small wires going into your stem tab has a habit of riding up the plastic plug and failing to secure the wires to the tab. Make sure your battery ground cable is disconnected, then try to slide the wires out of the plastic clip and directly attach the wires to the Alternator tab. Then slide the plastic plug and lock it into the Alternator housing. Reconnect battery ground cable.

Posted on Jan 01, 2014

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Posted on Jan 02, 2017

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