Green plug; Air-conditioning maybe?
Alternator; as said, put a meter on the battery. If the regulator is faulty you'll see it. When the same thing happened my Cavalier (first clue was brightening headlamps), the voltage was erratic and peaking at 32v, and it very quickly fried the battery. So don't delay.
The alternator is simple to remove. Slacken the belt with an 11mm spanner on the tensioner wheel, wiggle the belt off, then it simply unbolts.
|