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Would welding on a truck have anything to do with not starting all of a sudden

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  • Steve Stein Feb 09, 2012

    does the truck turn over still?? did you disconnect the battery first?

  • dave zelasney Feb 09, 2012

    yes it does and no

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  • Cars & Trucks Master
  • 22,156 Answers

Yes it would big time if the battery was not disconnected first as this can and does back feed the alternator and cause the regulator to go which stops it from charging ,When i was at college which was more years ago than i care to mention we were always taught to do this as in them days cars were just coming out with alternators and it was a problem ,it all depends on the welder as to weither the electrode is positive biased or neg and the voltage from the average welder is around 30 volts with a very high amperage,with three car batteries in line joined up with jumper cables i have welded things back together on trucks that had broke a spring hanger or the chassis centre cross member that hold the gearbox up on tippers when they went wrong on the rubbish tips whilst emptying their loads .Those were the days no health and safety laws then just keep them rolling anyway you could .

Posted on Feb 09, 2012

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