GM Diode Mod Not Working (4 Viewers)

[jahawk]

I've tried the GM diode mod for AGM batteries on my 2002 LX with no luck. I replaced the 7.5 fuse coming of the battery with two differnt diodes in both directions, both diodes in parallel, no change in charging amps. Any ideas?

Jim

 

[TLCPNW]

Did you happen to re-wire your alternator connection say during an alternator swap?

If you did, there is a chance it was wired incorrectly.

That's my first thought.

 

[badlander]

I've tried the GM diode mod for AGM batteries on my 2002 LX with no luck. I replaced the 7.5 fuse coming of the battery with two differnt diodes in both directions, both diodes in parallel, no change in charging amps. Any ideas?

Jim

Charging amps won't change but the voltage should go up by about .7 volts over what it was.
I think mine starts out at about 14.1 when starting then drops down to about 13.8 to 13.9 when warmed up.
Has your voltage not increased at all?