Question about 1990 Ford F150

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Alternator wont charge battery. Brand new Alternator, alternator harness, solinoid, and battery. Correctly conected wiring no blown fuses. I disconnect negative battery cable and my truck dies all new items were double checked and are in proper working order. Why wont my alternator charge my battery?

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  • Rene Rossouw
    Rene Rossouw Nov 13, 2010

    Which engine do you have?
    Is the alternator equipped with an internal or external regulator?

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

apollo 13
  • 56 Answers

SOURCE: 1998 explorer sport, 4.0 sohc alternator wiring

you mean no alt.output or burn wiring,if burn wiring you can get a connector in any parts store,if not you need to check your fuse its a 7.5 amps for charging system

Posted on Jun 14, 2008

  • 1 Answer

SOURCE: 1998 ford explorer 4.0 sohc alternator wiring harness

'exploded look at steering wheel of ford explorer for repacking airbag. Plus the cruise control button dont work,
Please help.
menawho

Posted on Jul 06, 2008

  • 651 Answers

SOURCE: 1987 Suzuki Samurai alternator wiring. No original wire harness

i would return that alternater and bring the one you are replacing to compare to new one. make sure they are the same. they sell several differant ones for the same vehicle.

Posted on Nov 28, 2008

GM Elec
  • 1000 Answers

SOURCE: Battery and Alternator Good. Alternator not working. HELP!!!

djn, I believe you have some accessory that is on when the key is in the off position.
Check to make certain glove box light is not on when the glove box door is closed and the trunk light is not on.
If you have an aftermarket radio or any added accessories make sure they are not wired direct to battery voltage.
If all that checks out, disconnect the battery negative and connect a test light between the battery and battery cable. If the light is on you have a drain in the electrical system. Leave the light connected and begin removing 1 fuse at a time until the light goes out, that will tell you what component or circuit is draining the battery.
Last resort, you may have an alternator drawing the battery down.
Good luck and let me know.
Regards,

Posted on Mar 01, 2009

emissionwiz
  • 75797 Answers

SOURCE: blown lights and overcharging alternator (2 alternator)

this can be caused by a shorted cell in the battery, has the battery tested? and clean the battery cable's, corrosion can also cause this condition.

Posted on Mar 27, 2009

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r/
David

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Sep 29, 2009 | 2001 Ford Windstar

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Jun 14, 2009 | Hyundai Motor 1999 Tiburon

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Apr 28, 2009 | Ford Taurus Cars & Trucks

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