Question about Cars & Trucks
A possible alternator failure. It would have shown a battery charging warning light on the dash before failure if this is the case.
Restart with a donor battery and check dashboard for charge warning indicator. If illuminated, then replace alternator.
Posted on Oct 30, 2012
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Posted on Jan 02, 2017
SOURCE: Battary light would not go off
Have the battery and the alternator tested under a heavy electrical load. Some of the cheap battery testers will not indicate a bad or weak cell. Also your alternator may not put out enough amperage to keep up with the electrical demands placed upon it. A good battery tester is a carbon pyle tester. Good luck.
Posted on Feb 07, 2009
HI, what your are experiencing is a Battery drain issue.
There are one or more devices that are not shutting down during the downtime of the vehicle. this will cause the battery to drain overnight. You will need to isolate this drain and fix it asap if possible.
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. Now about the "miss" in the engine. We would suggest doing a cylinder leak down test, also check for a "flat" cam. If the problem still exists, scan the PCM (computer) for trouble codes.
Posted on Jun 18, 2009
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