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
a 6ya Mechanic can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repair professionals here in the US.
click here to Talk to a Mechanic (only for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
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
Tips for a great answer:
Feb 09, 2016 | Cadillac STS Cars & Trucks
May 12, 2014 | 1998 Plymouth Breeze
Dec 15, 2011 | 1995 Ford Windstar
Oct 25, 2011 | 2002 Volkswagen Passat
Jan 25, 2010 | 1993 Chrysler Concorde
Jun 02, 2009 | 1987 Cadillac Cimarron
Jan 11, 2009 | 1992 Volkswagen Jetta
Oct 17, 2008 | 1995 Cadillac DeVille
211 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: