Chevrolet Repair Questions? Ask a Mechanic for Answers ASAP
Ok, it would help if you could explain what the current problem is
Is the check engine light on?
I dont believe it has anything to do with that broken and repair port unless you can see oil dripping from it onto the alternator, but there should not be oil coming out of it.
Based upon all the symptoms, there is a low voltage condition when first cranked. This may be from the new alternator or from an issue with the signal from the computer to the alternator to energize the voltage regulator. It doesnt automatically come on like older cars. Instead, the computer sends a signal to energize the voltage regulator inside the alternator based upon readings from a signal wire from the alternator to the computer. It will tell the regulator to increase or decrease voltage output as needed.
If I can get the last 8 of the vin number, I can pull up the schematics and walk you thru some testing. You will need a voltmeter for this
Just need to have leads to test voltage at wiring. Give me a few minutes to pull the schematics
At the alternator, I need you to check the voltage at the gray wire and then at the smaller red wire when first cranked up and idling and let me know the results
Probe the wire from the back side of the connector with your positive lead and have the negative lead on the engine block or other good ground
correct, you want to do it when it is cold. Preferably having sat for at least 4-6 hours. So if you need to wait til the morning, that is fine. just bookmark this page to return to it when you have the readings. I am here everyday for my customers