alternator problems
alternator problems So the other week my alternator went out again. I went to autozone got anoyher one. But aftering putting in when i started the car it was charging at 18 volts. So i thought it was a bad alternator, so i went and got another one but its doing the same thing. Any ideas on what it could be? A few month back i replaced the power plug that goes to the alternator, could it be it? Thank you!!!
Check pcm for alternator related trouble codes.
Has the 18v charging shown up after you replaced the pigtail.
Did you use a voltmeter to verify the actual output voltage.
If it's wired correct there arent any codes stored and it's putting out that high of voltage pull the alternator have them hook it up and verify it's output voltage on their tester.
Has the 18v charging shown up after you replaced the pigtail.
Did you use a voltmeter to verify the actual output voltage.
If it's wired correct there arent any codes stored and it's putting out that high of voltage pull the alternator have them hook it up and verify it's output voltage on their tester.
Joined: Nov 2001
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From: Schiller Park, ILL Member: #317
Check pcm for alternator related trouble codes.
Has the 18v charging shown up after you replaced the pigtail.
Did you use a voltmeter to verify the actual output voltage.
If it's wired correct there arent any codes stored and it's putting out that high of voltage pull the alternator have them hook it up and verify it's output voltage on their tester.
Has the 18v charging shown up after you replaced the pigtail.
Did you use a voltmeter to verify the actual output voltage.
If it's wired correct there arent any codes stored and it's putting out that high of voltage pull the alternator have them hook it up and verify it's output voltage on their tester.
Check pcm for alternator related trouble codes.
Has the 18v charging shown up after you replaced the pigtail.
Did you use a voltmeter to verify the actual output voltage.
If it's wired correct there arent any codes stored and it's putting out that high of voltage pull the alternator have them hook it up and verify it's output voltage on their tester.
Has the 18v charging shown up after you replaced the pigtail.
Did you use a voltmeter to verify the actual output voltage.
If it's wired correct there arent any codes stored and it's putting out that high of voltage pull the alternator have them hook it up and verify it's output voltage on their tester.
I didnt get a chance to check the pcm, but i noticed that someone taoed together the 3 extra wires that are on the pigtail. Could that be causing the problem? I just took the tape off and seperated the cables and started the car. The volt gauge is showing right under the 4th bar on the right.
I forget what they do/are for, but crossing those terminals on the alternator could cause problems. You should just have one wire hooked up to the voltage regulator connector on the alternator.
Yes, that is bad. Even though those wires are not used on the car, I recall that the regulator on the alternator still has them live.
I forget what they do/are for, but crossing those terminals on the alternator could cause problems. You should just have one wire hooked up to the voltage regulator connector on the alternator.
I forget what they do/are for, but crossing those terminals on the alternator could cause problems. You should just have one wire hooked up to the voltage regulator connector on the alternator.
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I look looked up the regulator specs and didn't find a definitive source - but it looks like one of those three sends an alternator RPM signal, one is for testing the output voltage, and the other is a control wire. So tying them together could make really odd things happen...
I look looked up the regulator specs and didn't find a definitive source - but it looks like one of those three sends an alternator RPM signal, one is for testing the output voltage, and the other is a control wire. So tying them together could make really odd things happen...