Question about 2002 Mercury Mountaineer
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That's sad to hear specially coming from the dealership. I suspect that there's a grounded wiring somewhere and a good auto electrician can be helpful to trace it out. There's no way it can't be fixed, there's always a way. If there are no electrical faults then I strongly suggest that you replace the car's computer.
The computer itself can be faulty which may cause electrical failure to the car. Without knowing that the charge is not holding up. Computer replacement is one good thing to consider and I believe you'll be good after the procedure.
Hope this helps and thank you for using FixYa! Have a good one!
Posted on Jan 03, 2011
You have something grounding that shouldn't. Check the Positive battery cable all the way to the starter. Most likely there is a worn spot somewhere. If that is in good shape, check the wires that go to the alternator, especially any that may be near the motor or belts. If you have an After market alarm installed disconnect it if you have one of those "Thumper" amplifier or boosted power stereo systems installed that has that wiring in the engine compartment disconnect it, essentially anything that has been added should be removed, this includes LoJack if you have it. Once all the add on stuff is removed check the battery for drain. Once you have isolated where the problem is at you can put things back one at a time until you locate the actual problem device or problem circuit. You will need a Multi-meter, about $10 at Walmart to test continuity and voltage. Unfortunately this also includes any vehicle DVD devices or Navigation systems as well.
Posted on Jan 03, 2011
Try to find why its discharging ?? firstly disconnect the two wires on the alternator ,and leave overnight to see if battery goes flat ,its a simple process of elimination
Posted on Dec 31, 2010
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Posted on Jan 02, 2017
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