truck starts but wont stay running

Asked by Aug 29, 2015 at 11:44 PM about the 1999 Ford F-450 Super Duty Regular Cab DRW

Question type: Maintenance & Repair

truck starts but wont stay running and battery burns out had to replace battery
two times found wires corrioed on a relay replaced with new one still burning
up battery

1 Answer

43,015

If you are saying what I think, battery over charging witch continuous will burn out a battery so to speak. The voltage regulator is what controls the draw on the alternator, if bad the alternator could charge full amperage rating. I can't remember if the regulator is in the alternator or separate on yours. If there is a amp gage in your dash it will show charging over 14.5 volts.

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