pol_sarge

Hello all,
I've been a member for a while, and haven't posted much....but i really need some help....I've done hours of searching the threads, and as a result, this is where i'm at.

1995 E320 sedan, 309k miles!! the blower is not working. what I've done:

1. checked all fuses, including strip fuse (which had a crack in it, but i bypassed with in-line 30amp)
2. took out/disassembled the CCU, didn't see any signs of arcing, etc. i actually plugged the board back in while apart, and touching my fingers on some points of the board made the aux fans come on, but that's it.
3. removed the 3-prong plug behind the brake booster and tested with volt meter. looking at the male part, affixed to the firewall i found the following:
a-left, closest to pass side-nada 0v
b-center-13-14v
c-right-9v, switched fan to low, got 1.2v

4. removed the blower motor, and bench tested with 12v. worked perfect.

so, guys, am i looking at a resistor, that goes under the blower motor? have i missed anything?

i'm halfway confident that the ccu might be ok, when i choose floor, defrost, etc i can hear all of the vac valves manipulating....

looking forward to your suggestions!! thanks in advance!!

pol_sarge

So, nobody has encountered this problem? amazing!!

Plutoe

It's a very simple system---fan motor--preresistor group--air volume switch--ACcontroler--which one is faulty???

pol_sarge

Air volume switch? haven't heard of that one....see....that's why we ask.

Plutoe

Then what do you call the dile or button or wheel or switch or what ever you call it to increase or decrease the volume of air

pol_sarge

installed a new resistor/regulator, and now the fan is working!! now, i gotta figure out the A/C.....
anybody know where to start?

Plutoe

Wada you mean figure out he AC!!

pol_sarge

Fan works, now the a/c doesn't.....

pol_sarge

still haven't got this resolved, but i've read until i cant see anymore....
nothing happens when i push recirculate button, and not too sure on how to test it. any advice?

Plutoe

To test the condition of the refrigerant system, simply mount a set of AC gages, with the engine running--the low pressure should 2 and the high side should be 15-17--------what is yours????