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Old 10-12-2010, 13:39   #1 (permalink)
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Alternator?

I have an 04 Expedition with 82k miles. For the past several months, the care would occasionally not start (still had original battery). I finally got around to putting in a new battery, and it started right up but when I drove it I noticed the battery light flickering, and the "Check the Charging System" on the message center. The car stalled a few miles from my house, and so I glided to the side of the road, and it started right up. This morning, it wouldn't start, so I jumped it. When I got it started, the engine ran fine but none of the gauges would work. Then when I turned the car off it wouldn't start back up. I did check the belt and it is very tight. Is this a classic example of needing to replace the alternator? or could it be something else, hopefully less costly? Thanks.
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Old 10-12-2010, 14:49   #2 (permalink)
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Re: Alternator?

It could be the alternator and it could be the connections. Charge the battery and the check the voltage at the battery with it running. You should get around 14v.
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Old 10-18-2010, 08:39   #3 (permalink)
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Re: Alternator?

sorry for my stupidity, I'll check the volts, but if it is showing less than 14v, does that tell me it's a bad alternator or bad connections?
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Old 10-18-2010, 20:25   #4 (permalink)
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Re: Alternator?

If it's still the same voltage as with the engine off, then you know it's not charging. There's a few tests to see if the alternator is bad or not. Autozone will check the voltage for you.
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Old 10-18-2010, 23:11   #5 (permalink)
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Re: Alternator?

If it turns out you need an Alternator, I recently replaced mine myself and got the Alt from this company. Motor City Reman - High Performance Starters and High Amp/High Output Alternators They had the cheapest prices for a new Alt. The Alt. I got was the 135 amp and it bench tested at 148 amps. Im very happy with it so far. I replaced it this past summer and have had no problems since.

My 03 Navigator was doing the same thing after replacing the battery it wasnt charging as much as it should, so I replaced the alt and no problems now.
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