Battery Light

[jjoy211]

When driving my 03 only during boost my battery light comes on. As soon as let out it goes off. Any help would be great.

I also had an exhaust leak fixed today and it started after I picked it up.

Thanks
Jeremy

 

[Sonic03inSC]

Get the alternator checked asap.
I have gone through 4 of them.

 

[jjoy211]

I had my alternator checked and it was good. Could it be belt slippage? It only does it at full boost.

Thanks
Jeremy

 

[SVT Lurch]

A couple guys I know were over spinning the alternator with their pulley combo, which ones do you have?

 

[jjoy211]

I have a 2.95 Upper, 2LB Lower, Billet Pulleys(don't know the size

 

[MaximumVelocity]

+1 on overspinning the alternator. Put a bigger pulley on it.

 

[Screamin Cobra]

Honestly, I went thru the same situation and it was my alternator. I've been thru a few alternators myself and they said they were good when they were not! If I were you, I would buy a 3.2'' alternator pulley as well as replacing the alternator unit itself before you get stuck on the side of the road!

 

[Goodlife]

What exactly did they do to repair the exhaust leak? Was it anywhere near the exhaust manifolds on pass side of engine?
Rob

 

[jjoy211]

I have the 3.2 Alternator pulley. The exhaust was on the driver side.

 

[Sniperdog]

+1 on overspinning the alternator. Put a bigger pulley on it.

+2

 

[Screamin Cobra]

Alternator has to be failing because those are the symptoms of it. At least thru out my experience.

 

[MaximumVelocity]

If the exhaust leak was on the driver's side, ask if they disconnected the battery before doing any work. They may have shorted a wrench against the live terminal on the alternator which is right there. That can take out the sensitive regulator and diodes in the alternator.

Replace the alternator if it looks like voltage is still dropping with the right size pulley.