I thought a 94 dodge van was a magnum engine and had a serpentine belt and a much smaller alternator pulley as well as a ND alternator, which resolved the infamous dodge van lights dimming at idle reported since the 70's.
While my newer remand alternator seems to be more capable at hot idle, my older one could not handle the Lights, blower motor on high and a depleted battery. The voltage would sink to and below 12.8 if the traffic light is long enough.
My AC does not work, so there is a load you have that I do not, but I would not necessarily expect magical amperage increase at hot idle.
However if yours never goes above 13.5v at any rpm, even with a fully charged battery(s) , then there is a problem somewhere.
While my old alternator maxed out at 32 amps extra for loads at hot idle speed of 525 rpm, at 800 rpm there were 62 amps available and voltage would quickly rebound.
I am not sure of the outputs of my recent reman alternator but the other day was supplying 50 amps into my well depleted northstar AGM at hot idle when I expected to see it in the low 20's, if that
In the Video shown in that 'fool the ecm kit', the adjustable voltage regulator slides out of a TransPro box.
That large finned VR mex posted a pic of that has a remote montable potentiometer, the voltage range is 14 to 20. There is another large finned version that has a 13.0 to 15.5v but it has no remote potentiometer but instead claims it is obscures to prevent accidental bumping.
There is another Alternator parts video explaining how to hook it up, and it clearly shows the modern looking Blue/white potentiometer on the back mostly submerged in potting.
Heck, If I was able to put a remote potentiometer on my Meanwell, I can likely remove the potting and get to the circuit board for a remote mounted pot for next to my dashboard voltmeters. But I guess I could just thermal epoxy another finned heat sink to the casing, ground it properly, glue a dial on the existing pot and mount it where I can easily choose 14.4 or 13.6v for this battery
I saw another similar to the mopar VR, a Bosch adjustable VR
Guess if i Knew WTF this guy was talking about, I could make my own adjustable VR: But wheres the heatsinking??
http://www.amsterdamhouseboats.nl/voltage_regulator.htm
