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83 k5 blazer lost altenator belt and ever since whenever I turn on head lights it drains the battery fast. Runs and charges (putting out 13.2 volts) fine with lights off

Posted by Anonymous on


1 Answer

I think your alternator suffered when you ran the engine with no alternator station and this has perhaps burned its rectifier ar has caused shorted turns

look for a recon or scrapper one {10-£20}
if this fixes it i would replace with new and pass on the other or keep as spare

this could have also buckled the cells in the battery so check this also ....

Posted on Apr 19, 2015

  • 1 more comment 
  • Anonymous Apr 19, 2015

    I did replace the altenator and visually checked all under the hood wires. I've had 2 people check it and neither fixed it

  • Anonymous Apr 19, 2015

    hi there did you check the current between the battery and when the lights are on and not you need atleast a 50 amp current meter quite easy to make one and you can measure what current is returing to the battery and what its putting back if the battery drains the alternator via the regulator isnt supplying enough current but the voltage is constant replace the regualtor pack next after you check the battery is good... and with a steady 12v or more engine off..

  • Anonymous Apr 19, 2015

    i think the regulator pack isnt passing enough current



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Posted on Jan 02, 2017

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SOURCE: battery light on volt gauge is ok new altenator and battery

It is the two or three wire connector on the top side of the alternator. Either a wire has broke before the plug or there is a problem with the plugs terminals. The dealer sells a repair pig-tail if you need it.

Posted on May 03, 2009

  • 28 Answers

SOURCE: MX5 not charging battery. If i disconnect the

usually cars stall when running and the batterie is removed, indicating a bad alternator.
perhaps your batterie is bad

Posted on Sep 19, 2009

  • 1 Answer

SOURCE: 91 Chevy K5 Blazer turn signal flasher

i agree with them, but you know when you open the door and thatgod damn buzzer goes off until you turn on the truck? how the hell do you shut that off?
please email me

Posted on Dec 31, 2009

  • 8737 Answers

SOURCE: 2001 gmc sierra 1500. Battery light in msg center

The regulator is in the alternator. Did you check voltage at the battery? Nothing in the diagram jumps out at me. Is the check engine light on? Maybe we could get a hint if there was a trouble code.bc11b1d.gif

Posted on Sep 26, 2010

  • 5158 Answers

SOURCE: I have a 1998 nissan frontier. alternator has been

first thing to check is the proper routing of the belt. there is also a tensioner and it may have failed and need replacing. you may also want to check that you are getting the proper replacement alternator (amperage). you have not mentioned if you hear the belt slipping or not. removing the battery connectors and cleaning them with a wire brush would also be a good idea. keep in mind if your stereo is of the anti theft variety make sure you know the code and how to enter it.


Posted on Jan 05, 2011

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If the alternator only puts out about 12/13 volts, the car's voltage consumption could be exceeding that; hence, intermittent charge/battery light.

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