Question about 2002 Ford Taurus

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Car not able to stay on.

I am having trouble keeping car on. After a few hours of sitting the car will start but then the car will die out. It reminds me of when my alternator went out. The radio dimmed,the windshield wipers ran slow and the heat turned off. I just replaced the battery and alternator a few months ago. What else will cause this.

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Posted on Dec 03, 2017

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You could still have a bad Alternator if you spark anytime the engine is running ... if you have toasted alternator in most cases bad battery same thing. So side note... If you jump start another car HAVE YOURS TURNED OFF attach cables try to start the other car WITHOUT yours running first. If it will not start MAKE SURE YOU HAVE GOOD CONNECTIONS. Then start yours to start the other. ( this is because if you Spark at any time yours is running it will take out the DIODE IN THE ALTERNATOR.) Now to diagnose your problem that sound like bad a bad Alt. if you don't have an OBDII TESTER take to one of the autoparts stores when can plug in there's. Remember .. on newer cars they use lots of power to run. If you have a bad ALT. it will only last as long as there is enough voltage in the battery that will supply power the computer.... when that is gone so is the power to make your coil fire...so in short Alt or Battery .... Also check the belt to the Alt make sure it is tight not too tight most have IDELER PULLY. Hope I helped

Posted on Dec 03, 2017

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If battery keep dying in few hours then check if there is something drawing battery while car is of. It could be something easy like broken switch on door which leaves lights on to faulty computer which doesn't turn off . Sometimes those things are almost impossible to find and chaperone is to disconnect battery when leaving car overnight. Just make sure there is not electrical short somewhere which may cause car fire. Also is good idea to park car in quiet place, tur it off and listen for anything running, like radiator fan, ac blower etc.

Posted on Dec 03, 2017

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Posted on Jan 02, 2017

fastboyz
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SOURCE: 1999 ford escort zx2 alternator works brand new battery but battery isnt charging !

you will have to check the voltage whith the engine running .should be 13.6 or better

Posted on Sep 25, 2008

  • 185 Answers

SOURCE: 1999 ford escort zx2 alternator works brand new battery but battery isnt charging !

Stecorbett:

May I suggest that you drive your car to one of the major auto stores and they can and will check your alternator for you to make sure it is good/bad.These places like AutoZone do this all the time. They do not charge for the check out. (Of course they are hoping that if you need a part you will buy it from them.

One other suggestion. If you do need a new alternator, get a rebuilt one. It is cheaper and most always comes with a warranty.

Hope this helps Good luck Loringh PS please take a moment to give me a rating


Posted on Nov 09, 2008

emissionwiz
  • 85206 Answers

SOURCE: Engine will not start/adio does not work but int/ext lights ok

this is most likely the battery protection relay, this is part of the lighting control module (LCM/GEM), your dealer can test test it but the issue may have been related to the cold, this module controls almost everything except the engine and trans.

Posted on Dec 17, 2008

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SOURCE: 93 LX 5.0 replaced battery, ran fine then would not start

well, it doesn't have to be the alternator itself, but it would be wise to check its leads and also the leads of the starter. 
Is your battery charged?? even if your car stereo runs fine, the battery still might be out of charge too much to turn the engine... 
What does happen when you put it on idle? Do the gauges start up normally? Does the CD play fine? All the dashboard lights light up as they should? If there's any weird behaviour, it's possible there's a short circuit somewhere... If it's OK, try to fire up the engine and watch the dashboard, all the gauges and lights(+the radio). Everything works as usual? if not you are likely to have a short circuit before your alternator, or maybe starter(not that common and if you hear a click it's likely that starter is OK)

MAKE SURE the battery is WELL charged! you could have drained it listening to some music in the car after killing the engine.

Posted on Apr 15, 2009

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SOURCE: 99 Taurus dies quickly and random windshield wipers

u need a new relay switch in the inside fuse box. it stores power and when it goes bad it drains the battery and the windows are because of a factory recall on the switch and has nothing to do with your problem. the rrelay switch is a big black square one and probably clicks alot after you park and get out of the car you will have to listen for it.

Posted on Nov 23, 2009

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