I'm resurrecting the AC in my 87 300TD. I have it to the point where it is charged and compressor is coming on, however the aux fan is not coming on when the compressor is engaged.
As a troubleshooting measure is temporarily bypassing the step down resistor as described by "the tenor man" a bad idea? Or are there potential electrical problems introduced by doing this?
Quote:
Originally Posted by the tenor man
When my auxiliary fan wouldn't operate, it was the step down resistor...it was cracked and broken from age.
As I have the #14 head, I was always afraid I would overheat the engine.
I removed the resistor from the circuit and used a small bolt and nut to connect the wires, then used shrink wrap tube to seal them.
Now when the pressure goes up on the AC, the fan runs at high speed...no low speed anymore, but who cares...I'm inside the car in the cool!
The Tenor Man
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