I put a new regulater in and it worked good for three days and then started to overcharge my battery is good but I notised that my negative post clamp was a little lose so I tytined it and give the regulater a tap with a wrench and it was good for a few more days now its overcharging againe the car is a 88 chrisiler fifth ave
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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.
with a car that old its possible the gauge is off but to be sure you can go to autozone or pepboys im pretty sure they will test the charging system for free . or if you have a volt meter you can check it yourself it should be 14-14.8 with the car running anything higher than 14.8 is overcharging . if it is overcharging you will need an alternator for sure and if the battery is over 3 years old its best to replace that too so you dont break down in the near future because overcharging cooks the battery so whatever life it has left has been cut hope this helps
It may be that the alternator is overcharging, by delivering too high a voltage. If this is the case, it would also damage your battery. The charging voltage is not adjustable, and you would have to replace the voltage regulater, which is located inside the alternator. Before doing that, use a digital voltmeter, to measure the voltage at the battery terminals with the engine running at 1500 -2000rpm. The voltage should measure 14.2 Volts. If significantly higher, the regulater requires to be replaced.
If you have a fully charged battery when you installed then 14 volts is way to much charge for the battery which would mean that the alternator probably has a faulty regulator and the alternator needs to be changed otherwise you will continue to install new batteries. If the battery was in an uncharged state then it is possible for the alternator to charge at full capacity to charge up the battery.
Yes It sounds like the voltage regulator inside the alternator has gone wide open .It can also ruin your battery and explode the battery.I would have it hooked up to a alternator tester and just to make sure it's not just your gauge.hope this helps
Looks like you have replaced all of the key parts, and then some. At this point I would verify that the alternator is charging the battery. With engine off, check battery voltage. Start the engine and check thre voltage again. It should climb to charging voltage, around 13.0 to 13.5 volts. If it doesn't, check all connections. On a vehicle this old, I would start with the ground circuits.
First of all make sure your battery is in good condition, and then get a voltmeter attached to battery, before start & after to confirm what your inside gauge is telling you is correct. Check and clean all connections to & from battery. Otherwise it's pointing back at regulator again.