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HELP MY GT IS EATING ALTERNATORS
As in the title my 05 gt is eating through alternators, first I gor the cam code so as usual i replaced the alternator with a PA perfromance Alternator from AM it failed within 20 miles then I got an oreilys alternator ( time did not permit the AM exchange) and again within 20 miles the alternator gave out. both times i got P0622 and i removed the negative cable and the car died.
I find it unlikely to get 2 bad alternators from 2 different sources, also battery and starter tested fine. please someone else give me an answer besides go buy another alternator im looking for a reason as to why the alternators are going out so quickly. |
Check out the possible symptoms. Good luck.
Possible causes - Battery charge - Faulty Generator - Generator harness is open or shorted - Generator circuit poor electrical connection - Engine Control Module (ECM) controlled generator - Faulty ECM Description: The Engine Control Module (ECM) uses the generator turn on signal circuit to control the generator. A high side driver within the ECM allows the ECM to turn the generator ON and OFF. When Generator operation is desired, the ECM sends a 5 volt signal to the voltage regulator via the generator turn on signal circuit. This causes the voltage regulator to begin controlling the generator field circuit. Once the Generator is enabled by the ECM, the voltage regulator controls generator output independently of the ECM. Under certain operating conditions, the ECM can turn Off the generator by turning Off the 5 volt signal on the generator turn on signal circuit. |
yes check those symptoms ^ and also make sure you have a good ground connection between the engine and vehicle frame.
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Removing the negative battery cable is a really bad way to test an alternator. You should be checking it with a voltmeter.
" Warning: Never disconnect a battery cable while the engine is running to "test" the alternator. Doing so can cause high voltage spikes that can damage the alternator as well as other electronics." http://www.aa1car.com/library/2002/cm102… |
My guess is the alternator cable is the issue. Perhaps shorted/shorting to the vehicle frame, or not fully connected.
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The fusible link in the alternator cable is probably bad.
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Originally Posted by moosestang
(Post 8192232)
The fuseable link in the alternator cable is probably bad.
Well once again you guys save the day, I followed the upgrade pa performance wire to the battery where I found it was black and melted. Why would it have melted it is a direct connection from alternator to battery . I'm going to replace it once more and hope it works with the stock cable |
Originally Posted by Rshustler1
(Post 8192237)
Well once again you guys save the day, I followed the upgrade pa performance wire to the battery where I found it was black and melted. Why would it have melted it is a direct connection from alternator to battery . I'm going to replace it once more and hope it works with the stock cable
I bet your PA performance alternator was fine too. Get a voltmeter! |
moose is generally right on the money.
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Originally Posted by hammeron
(Post 8192260)
moose is generally right on the money.
I'm wrong plenty, I delete or edit those posts before you see them. |
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