Suburbazine

Can the battery light activation be tuned out of the PCM? I swapped to a 320A alternator and apparently once the regulator is started the PCM cannot do an alternator disable for economy/stall saver. The DTC that sets is P1637, but I don't know if messing with it will stop the light from flashing randomly.

It's nice to make a cool 70A @ 14.5v hot idle (no voltage droop at all), but the blinking battery light is driving me nuts. And yes, it will do 172A at idle.

Picture because

treylittlefield

Is that a DC power or mechman alternator?

Suburbazine

QualityPower. Pretty nice looking and working.

1FastBrick

iTrader: (17)

You can disable the code but it sounds like something is wrong with your new alternator.

Look at this chart.

http://www.gearchatter.com/viewpost14190.php

1FastBrick

iTrader: (17)

Are you sure the alternator Connector is seated all the way???

Make sure it didn't bend the pin over inside.

Suburbazine

Seated clean, pulled the connector apart and cleaned the contacts too. I will test the signal voltage tomorrow and see if it is getting 10v.

It does sound like the regulator might be randomly grounding out the signal circuit.

1FastBrick

iTrader: (17)

Hey stuff happens. I have had new stuff fail right out of the box

BlackGMC

iTrader: (31)

Why such a big alt?

Suburbazine

2000w of audio and the idle draw with lights, e-fans, fuel pumps and AC sits right around 80A. I'm also planning to tuck a 2x8 linear in the back eventually.

GMCtrk

iTrader: (27)

When I installed 02 OS, I had to suppress the alt code, but I'm not sure if this is the same issues or not. Also, I wasn't aware that a 2002 PCM had control over the alternator since it's only a 2 wire alt. I know the 05 up the pcm controls.

Also, most aftermarket alts are junk with cheap internal parts. This one looks higher quality, it does appear to have a billet case.