How do I remove the electrical connections to the a/c compressor? - PeachParts Mercedes-Benz Forum

Ron Brooks · #1 09-11-2002, 11:51 PM

This is a 1988 300SE. OK, I looked at my non-activating a/c tonight. I cleaned off the outside of the connections. Still no activation of the compressor clutch. I would like to take off the connections themselves and clean them to be sure they are making good contact. Problem is, I don't want to break them in the process. Looking from above on the driver's side, it appears that there are really 2 different connectors. The top most has 3 wires running from it and there is a second connector below that one that appears to be separate and it has 2 wires running from it. The only other wire I see connected to the compressor is the ground. The ground is tight and I cleaned it.

My wife said the a/c worked fine last week on 2 occasions. Now the compressor will not engage.

I checked the fuse block under the hood and none are blown. On my car #5 is for the climate control and several other items. I assume that "climate control" is the a/c?

Can anyone tell me how to remove the 2 clips?

Oter than that, any suggestions on where to start checking? Odd that it worked fine and now the compressor won't engage.

Thanks,

Ron Brooks

mbdoc · #2 09-12-2002, 08:20 AM

The upper part of the connector just lifts off by pushing in at the ends. The lower part is bolted to the compressor.

IN most cases on this model, this won't fix the problem.
This car has a compressor control relay(klima) & most problems revolve around problems there.

Ron Brooks · #3 09-12-2002, 08:34 AM

I'm holding out hope because the connectors were pretty caked with oil and dirt forming a big mess of goop over them. I could only clean off the outside.

Once I get the connectors off and cleaned, if nothing happens, is there a way to test the KLIMA relay by jumping the exposed female cups the relay plugs into?