Truck wont stay charged we bought a new battery and it started and ran fine then we replaced the dash and had to leave the head lights on and went to start next day and battery was died so we jumped it and it died after we stated going down the road so we bought a new alternator and put it on then had the old one tested it was still good. so then we replaced the voltage regulator and plugs and wires worked good a couple time started right up and drove good but then started dien out at redlights and wouldn'e even turn over please help
Maybe it wasn't running long enough to charge up the battery?
Stop trying to jump it, when you are having problems with it dying, take the battery off and have it charged. And/or buy a $20 voltmeter to see what the battery shows. If it says less than 12 volts, it is discharged, and needs charging. A good battery that is not run down should have at least 12.5 volts. A new battery that is charged should have very close to 13 volts, maybe 12.8 volts.
When you have the truck running, check the alternator for charging. You put the voltmeter right on the battery and check it again. This time, with truck running, battery should show at least 13.5 volts. That shows the alternator is working. A good alternator will put out about 13 or 14 volts-the regulator will keep it from going any higher to prevent problems, like a melting battery or electrical parts burning out.
I would say get the charging system working right, then address the problem of dying at stop lights. That could be a carburetor problem, if the alternator is working.
SOURCE: Daughter called me ..car wont
it sounds like you have blown fuse to the Alternator.. I don't know what car you are talking about but they charging systems vary.. But if alternator isn't getting all the power it needs it won't charge. this should be checked.
good luck
SOURCE: Charging system
change your battery cables and check all wires on the alternator for loose connections, expecially the grounds.
SOURCE: 97 Chevy Blazer - good battery, good alternator...still dies???
if you removed the dome lightbulb then there is no longer a draw from the battery there but if the ashtray light light does not go out then over a period the battery will go dead or drained to the point to not the vehicle
SOURCE: 97 Chevy Blazer - good battery, good alternator...still dies???
check battery voltage when you turn off car. it should be 12.5 volts.if drops 11.0 volts the battery is got a weak cell in it.i bought a sears die hard battery it last 2 years the battery had a defect .it had a bad cell it short out the battery.check alternator wires for defects.
SOURCE: 87 f250 drained brand new battery
I would first have the alternator checked by an auto electrician to ensure it is working correctly and is providing the correct volume of current. It may be faulty and when driving you will be drawing battery power instead of power from the alternator to run the electrics. This will drain the battery.
Alternators do not last forever and if you are still running the original unit it is likely to be on it's last legs and you will need a replacement unit.
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