PCM For 1991 W250 with 5.2l, 4wd and manual transmission

Charrlie_S said
I am not sure on that vehicle, but I have bypassed the ecm, and installed a "normal" voltage regulator to cure a no charging problem, on other Mopars .
PS: did not bypass the complete ecm, just the VR circuit.

That's actually what the mechanic was going to do. We just thought it was a temporary fix. Thanks for the information and response.