yak 944s

While troubleshooting my always on cooling fan issue in my 87 S4 I can across this plug / connector in the front of the rad on the RHS. I can't seem to find what it plugs into?

Anyone know offhand what this is for ? The flaps maybe ?

Thanks . you guys on this list are awesome.

ammonman

Looks like the A/C low pressure switch below the high pressure switch is missing a plug. What are the wire colors on the plug in question?

Mike

yak 944s

As far as I can tell, they are black.

ammonman

The wiring drawings show the wire color to the A/C low pressure switch as "SW". To me this indicates "schwarz weiss" or "black white" aka black with white trace. If you clean the wire does it have a white trace line?

Mike

MainePorsche

Correct. That is the low pressure switch harness.
Did you have AC compressor clutch engagement ? I would think not.

yak 944s

There is no white stripe, but white dots on one of the wires. And no I do not have compressor clutch engagement. AC troubleshooting is further down on my list. Lol. So if its the connection for the low pressure switch, I need to find out where that is and check.

Tampa 928s

On the side of the receiver dryer.

Leon Speed

It is opposite the top connectors in your pic. See the green thing in your first pic, that's the connector.

yak 944s

Ah ok .. Got it . Thanks
Nice Car Aryan .. I think is same color as mine.

WallyP

SW is swartz, or black. Porsche normally will use / between colors, such as SW/WS for black/white stripe. (WS is weiss, or white).