Question about 1991 Ford Ranger Supercab

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I put a brand new battery in the truck and it was

1991 Ford Ranger, Automatic, 4liter
I put a brand new battery in the truck and it was dead the next morning.

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  • Woolfmusher Oct 08, 2009

    What's aleak donw run test?
    Terry Woolf

  • Woolfmusher Oct 08, 2009

    I didn't notice the door open or lights on. There is a blue LED on the aftermarket command start that is on all the time, but this was a brand new 1000 amp battery. I put it in in the evening and the next day the truck would not turn over.

  • Woolfmusher Oct 08, 2009

    Thanks Ronald. The battery is charging over night and I will try your test in the morning. I know the battery was good. Thanks

  • Schueltar May 11, 2010

    Did you leave the lights on? Door open? anything as to drain the battery?

  • yadayada
    yadayada May 11, 2010

    ok have aleak down test run



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Well its either the battery is also nogood or you have a dead short in the wiring.
TAKE the feed off the battery and charge it up to max gharge 12volts, then just touch the lead on to the lug and if it has a small spark then you have a short,
But make sure everything is turned off before you do it if there is no spark at all try putting a test light between battery and cable lug,if it lights you still have a dead short...Let me know how you go Ron

Posted on Oct 08, 2009

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  • Ronaldbrains Oct 08, 2009

    Now tomorrow do the test with a spark on the battery lug and if nothing then try and turn it over .if it is slow turning then its the starter shorting or the solinoid shorting ,,but i think there is a short somewere and you will get a spark when you touch the battery lead on the lug..

    But let me know Ron



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