Question about 1999 Chevrolet Cavalier

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Checking alternator on 99 chevy cavalier

How can you check alternator on 99 chevy cavalier

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Best way is to drive car to AutoZone or Sears, they will check it in the car free. The alternator does not need to be removed.

You can also use a multimeter ($5 ~ 50) also known as a "volt-ohm meter".
Start engine and be careful because the multimeter test leads can get caught in the spinning fan, fanbelt, pulleys, etc.

The safety factor may not be good enough for you to attempt.
Do not try to retrieve any test wire that falls or gets caught.

Engine OFF
Clamp the black (ground - negative) probe to the engine somewhere close to the alternator. Place the red test lead on the red alternator wire that is held onto the alternator with a nut. It may be covered-up by a red rubber boot.

Place multimeter (and test leads) in a safe position where you can read the multimeter display. You will start the engine, so make sure it will stay in place.
Start engine.
Read the meter. It should read 13.8 volts on the DC scale. A small fluctuation is normal. Turn OFF engine and disconnect meter.
There are further tests; however, this should have given you the result you need.

Posted on Oct 02, 2009

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The manufacture recommends using the CS electronic generator tester to check alternator output while on the vehicle, but you can go by a AutoZone or advance auto store and they would check the alternator for you.

Posted on Oct 02, 2009


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