Question about 2004 Ford Explorer

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Alternator and Battery

I was driving and the lights went out in my truck. It got me to where I was going but as soon as I turned it off it did not come back on again. I had the alternator and the battery replaced and the truck still won't start. The lights come on but the engine won't start.

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Need a little more info. What engine and trans do you have. The problem is, the engine will not crank or it cranks but will not start? Let me know.

Posted on Aug 31, 2008


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2006 Cadillac CTS help My car was tested @auto zone for the batery n alternator n both passed Good voltage Everytime I go to crank my car it does not crank I have 2 jump it of even if it's for 15 mins

Luis: That makes no sense. But here is what others are saying: " How possible is it for a bad alternator to be tested good? I already had people telling me to replace it.

I got both the battery and alt tested. Both passed.

Reinstalled on the car and it ran good surprisingly after the battery was charged @ the autostore > till after about 10 minutes, then the battery meter dropped back down.

Soon as i turned on the lights/ac the battery meter dripped down real low. SOon as i turned them off the meter jumped back up.

Soon as i revved the engine the headlight would brighten then dim back down after the rev was over.

I can jump the car, but it will turn off by itself if you leave it idling to long then it needs another jump.
Driving it doesn't charge the battery up.. its actually drops the battery meter down more and more and more till its dead.

-Car doesn't drain the battery while its off.. so its nothing left on.

>> Now people are telling me there alternator was tested good, but the problems went away after buying a new alt.
Some people say there could be a loose belt not turning the alternator fast enough to supply power to lights/ac and charge battery. Or bad wires". or possibly a bad voltage regulator.

May 28, 2015 | 2006 Cadillac CTS

1 Answer

Okay, so I bought a 2001 Ford Focus zx3 5 speed, and when I went to go test drive it, the alternator went (so I thought). anyway, he lowered the price, and I still got it and replaced the alternator. about...

your alternator is still under warranty get a new one, based on your info thats the problem, just make sure when installing the new one the battery polarity is correct because that is one cause of damaging the alternator, reversed polarity will burn regulator ic, once you have installed the new alternator run the engine on idle remove one of the battery connector if the engine still run it means the alternator is charging, if engine stops check wiring connection

Mar 16, 2014 | Ford Cars & Trucks

1 Answer

Brake light and battery lights are on in a 2006 nissan quest

This just happened to us. While driving the Brake and Battery light went on. These signs do point to the alternator not charging. Eventually car wouldnt accelerate. What happened is that our alternator belt fell off. 5 hours after being towed belt was changed and we drove off... turn on the a/c and loud squeal! Turn off a/c and its gone. Back at the shop were told the a/c unit seized somewhere causing the alternator belt to snap while we were driving down the highway (Apparently they share a pulley or something.. still gotta look that up as soon as we get back home) Both lights went on because the alternator wasnt charging. Cant turn on a/c for the rest of the trip or were stranded for hours again. Check ur belts, pullies, a/c unit and test alternator.. hope this helps u guys

Jun 23, 2012 | 2006 Nissan Quest

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Check charging system light came on, panel icons started blinking on and off and the battery soon after died.

First check your battery posts and cables to make sure that they're not corroded. Next, if you can get it to turn on, soon after unplug the negative battery cable briefly while the car is on, if it dies then your alternator went out, if it doesn't reconnect right away as we don't want to put any undo stress on the alternator. next thing to do is to take out the battery and go have it tested.

Sep 05, 2011 | Ford Five Hundred Cars & Trucks

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Bad alternator?

You could have gotten a bad alternator, it has happened.
I don't think it could be a bad fusable link, cause if it was you would have had a problem right off with the new one.
Have the battery checked, it might be bad, weak or dead cells. if that is the case, the alternator is over charging and burning out.

May 14, 2010 | 1998 Oldsmobile Intrigue

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Bmw 330 ci warning lights going NUTS

You have to check the alternator's output while there is a load placed on it. Take it to a auto parts store the have it load tested. You may be able to determine if there is a problem by starting the car and turning on all of your accessories. Removing the battery cables not allowing them to touch the vehicle, if the alternator output is where it should be, the car should remain running. If thats fine, havbe the battery load tested to be sure its accepting the charge it being given by the alternator.

Apr 23, 2010 | 2001 BMW 330

1 Answer

I was driving and lights went dim. all gauges shut off. soon after I lost all power. when I try to start it the lights dim in and out and there is a loud clicking under the dash. I checked the alt. and...

These are all classic symptoms of a failing alternator and a car running off the battery. If the alternator and battery test good then you have a loose of broken wire in the charging circuit. When you get the alternator tested make sure they take a reading with everything electrical turned on in the car to make sure the alternator still produces. Sometimes a diode will fail inside and while it may charge good normally, it won't when it has to produce extra power. Hope this helps.

Dec 19, 2009 | 2001 Oldsmobile Bravada

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Crazy BMW problem!! Please Help I have a 2002 330ci convertible with 96,000 miles. A couple days ago I made a right turn onto a freeway onramp and hit the gas (i was using steptronic ), suddenly there was...

unhook your car battery for about a half hour. hook it back up and see if the lights are off now. all the codes should reset, drive the car over to autozone and have them test the charging system to see that it is operating correctly. also if your radio is of the anti-theft variety make sure you know the code to activate it and how to enter it.

Oct 06, 2009 | 2001 BMW 330

1 Answer

I was driving when my warning park brake light as well as my warning battery light went on when I was pressing on the gas pedal. As soon as I let go of it, they turned off, as I pressed again then went on....

It's your alternator. I would get it fixed asap or you will be stranded. My mechanic said that mine caught a small fire when he pulled it in the garage. Auto Zone has rebuilt ones.

Aug 18, 2008 | 2002 Hyundai Santa Fe

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