VaSteve

Ok, I did a search and found this thread. But since it sort of died out, I will start a new one:

https://rennlist.com/forums/924-931-...s-blowing.html

So I was driving home today from tech session (it's a track car) and enjoying the cool air. Next thing I knew it was blowing warm and the light on the switch was off. I found that the fuse was blown. I tested the wire with the procedure outlined in the thread above. When the wire to the compressor clutch was tested (disconnected) I had good voltage and the fuse was fine. I checked the resistance and got 1.8 ohms...compared to the 3.6 Todd indicates in the thread. So I don't know if the coil is bad or the clutch or what.

Where do I test next?

Further.....if the clutch is bad, I need a new compressor, right? Is there is difference between the years or can I stick any year's compressor in there? I have a 1990 S2. If the coil is bad, can I swap it without releasing all the freon?

Thanks!!!

CPR

Is the compressor engaging?

BlueRiver86

I think 85+ all use the same compressor.

VaSteve

Yeah it seems that way. I ran it (at idle) with the clutch wire disconnected and I could feel the drag on the engine when I punched the button.

I tested the resistance again across the clutch (grounded to the body) and I got 1.8 ohms. Did the same test grounded to the compressor itself and got the same.

J Berk

Late compressors are definately different than early ones!

VaSteve

I got a new (old) compressor from someone and I was going to try and change coil. I took apart the old one on the bench, but I wanted to replace the part while in the car, so I didn't have to recharge the a/c. I can't recall since I haven't done this on a working system.... If I disconnect the mounting from the engine, can I drop the compressor enough with the lines attached?
I need to do this to get the gear puller on there. Right now there is no room to work with the radiator.

tks

Arominus

Pull the rad, or drop the compressor, if its got rubber lines you should be ok to drop it. If not you gotta make some room if you don't want to lose your charge.