Hello, I changed my blower motor and the fan switch. Now the A/C doesn't work. I don't think the compressor clutch is engaging. Any suggestions for what to do next in order to troubleshoot this? Perhaps the A/C relay has become bad? How would I test that? Is there a way to force the compressor to engage to see if it blows cold? A/C fuse is okay. #1 blower speed on the new switch doesn't work - would this have anything to do with the problem? Thanks, Joe

Joe,

Most often post fan replacement problems are due to disconnected ground wires that go to the floor/tunnel. It is also possible that a leak developed in the AC system resulting in the loss of refrigerant. The AC delay relay is on the right side of the console just behind the control panel.

To force the compressor to start, disconnect the wire coming from the compressor (green I think) and jumper it to the positive terminal of the battery, this engages the compressor. Start the car and see if the AC blows cold inside the car, if so, the refrigerant level is probably okay.

Report back with findings.

jorrell
--
92 245 317K miles, IPD'd to the hilt, 06 XC70, 00 Eclipse custom Turbo setup...currently being enjoyed!

No cold air comes out after jumping the compressor, so my next step is to get the system pressure checked - perhaps it needs a charge.

Thank you for the reply, I'm almost positive it isn't engaging since there is no power drain when I flip the air con switch on, but I am going to test it... I'll post the results.