Pontiac Problems? Ask a Mechanic for Answers ASAP
Hello, my name is Bobby. It does sound like an electrical issue. Do you have a voltage meter to run through some tests?
To start I need to know what each of the 4 wires at the battery have voltage wise with the key on?
Is there one large wire and two small wires or one large wire and three small wires on your alternator?
And the large wire has battery voltage?
That wire should have constant power. If it does not then there is a break in the wire. Most of the time this is caused by a failure of the fusible link in the wire. This wire goes from the alternator to the starter and the break usually happens between the two. you need to find this break and replace the wire.