Question about 1990 Dodge W150
The engine computer is also the voltage regulator.
I copied the following from another site. It might be something you should look at.
"The voltage regulator is built-in to the ECM...about a $275 part! However, before you jump to conclusions about the voltage regulator being defective, I'd highly recommend that you go visit the autozone website and follow the "Check charging system" word for word. I discovered that the alternator in my 1990 Dodge van wasn't grounding? How could that be? It's bolted to a metal bracket, right? Could be corrosion, could be rust? I even installed a second ground strap from engine to body. Nothing worked until I ran a ground wire from the battery to the alternator case. Charged just great then! Of course I discovered this after first replacing the alternator and the ECM! Don't you make the same (expensive) mistake."
Read more: http://wiki.answers.com/Q/Where_is_the_voltage_regulator_in_a_1990_Dodge_Ram_250#ixzz1HABX5yJ7
Posted on Mar 20, 2011
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Posted on Jan 02, 2017
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