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Dash lights are dim and while drivin they go out car sputters and dies oreilley says alternator bad mechanic says it's charging so they charged baterry I drove it one day then same thing it died and then wouldn't start

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  • Cars & Trucks Master
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I suggest O'Reilly's checked more than your mechanic did. Just because he says it is chrging does not mean he checked the diodes, which if bad allow the battery to drain whenever the vehicle is not running. Replace alternator.

Posted on Mar 02, 2015

  • Anonymous Mar 02, 2015

    Uea Oriellys said something bout the diodes being bad so you think that is what it is

  • David Harrelson
    David Harrelson Mar 02, 2015

    You bet'cha. To test this, fully charge battery, disconnect the cables overnight and see if it is still hot next day. Or, just replace the alt.

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  • Cars & Trucks Expert
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Have your charging system checked for free at any of the auto parts stores...they can check the entire system My bet is bad alternator...good luck..

Posted on Mar 02, 2015

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Posted on Jan 02, 2017

Anonymous

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SOURCE: 1985 Toyota van LE

hi terk
check battery connections are secure if its been changed recent chances are its the live lead has not been fully seated on the cone prior to tightening

Posted on Oct 30, 2008

fastboyz

paul erickson

  • 674 Answers

SOURCE: battery being drained on 2000 Expedition

you should remove your alternator and take it into an auto parts store and they can test it for you.
this alt had an internal regulator which can be replaced easy.
your auto parts store will be able to full feld your alt to bypass the regulator. this is how you test it to see if the regulator is bad.

you didnt say how many miles are on this truck .
most of these ford alt will last 120,000 or more
on the back side of the alt you will see the replaceable regulator.
516c5a3.jpg

Posted on Nov 17, 2008

Molson02536

Harvey N Tawatao

  • 3854 Answers

SOURCE: Charging light comes on and car dies,

Check the wire harness to the the Alternator for any loose or broken wire. Check the ground to the battery too. Good luck and hope this help's

Posted on Apr 08, 2009

SOURCE: Charging problem.. Wont charge battery

The instructions for installing a new alternator usually read to fully charge the battery (12.3 - 12.8 volt range). Otherwise, the alternator will be damaged when it initializes. I have seen some extreme damage result from installing a new alternator with a low-charge battery. The torque required to turn an alternator when damaged in this scenario is unbelieveable!

Posted on May 02, 2009

Anonymous

  • 155 Answers

SOURCE: battery not charging

check the fuses in the POWER DISTRIBUTION BOX under the hood, There is a 75A in-line fuse and #11 - 15A fuse see if they are good.... test your alt. loom for opens, and cables .....hope this helps...GL

Posted on Jul 06, 2009

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