Question about 1990 Chevrolet Cavalier
Battery holds charge, Alternator brand new, but will not charge the battery.
It maybe a bad voltage regulator in the alternator or the belt is slipping
Posted on Jan 26, 2009
The wire may have become corroded at the starter or shorted out sum where check the wires from the alternator to the battery
Posted on Feb 15, 2009
SOURCE: battery not holding charge.
try testing the battery terminals with a tester check the voltage with the DC 50V range(red to the positive black to the negative body ground). at engine shut the bat should read 12V. start the engine it should read 13 to 13.5v. If it checks that way it should be charging. Same happened to my civic. until I added a grounding lead wire to the negative post of the battery to a good grounding spot to the car engine. It solved my problem. Somehow honda's this series has no good grounding or the original wires are short of conductance.
Posted on Nov 08, 2008
SOURCE: Car won't stay running.
alternator does not hold a charge it simply charges the battery by unhooking the battery you are taking all voltage from computer and car will not run the proper way to test your alternator is use a multimeter and check voltage at battery while car is running if you have 13-14 volts it should be fine.
Posted on Nov 18, 2008
where did you get your alternator? mine broke a couple weeks ago and the new one from o'rilies was bad off the shelf.. i would take it back off and have whoever you got it from test it..
Posted on Jan 18, 2009
Check all your fuses if you had a system failure it could have blown a fuse. I am not sure on your vehicle where the fuse is in the car or under the hood it could also have a relay. You can check your alternator by checking the voltage at the back of the alternator where the big wire bolts on. You should have 14+ volts at the alternator.
Posted on May 24, 2009
SOURCE: battery wont hold charge
HI. you may have a battery drain issue that is sapping your battery overnight.
Here is the procedure I use to isolate a battery drain. Remove negative battery cable from the battery. Using a 12-volt test light, hook one end to the negative battery post the other end to the negative battery cable you just disconnected. The test light will glow or "light" if there is a drain. If the "light or glow" is faint, that is probably normal draw for the clock or computer. If the "light or glow" is bright, then there is a large drain. That should be corrected. Now start removing and replacing the fuses one by one until the light goes out; that one will be the circuit with the drain. Remember to hold in the button in the door jam for the interior lights.
Posted on Sep 01, 2009
SOURCE: F350 2004 6.0 brand
The first thing I would do is remove the alternater and take it to an auto parts store and have them check it. If the alternater is working good, then check the belts are routed and have the right tension. Either of these can keep the battery from charging. It's very common that a rebuilt alternater isn't working properly. If all these things are correct, check the live wire to the alternater is live. If it isn't alive you have problems in the wiring and I would take it to a mechanic.
Posted on Nov 25, 2010
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