Paul Lower

So I have a 2001 F150 XL 4.2 with a 5 speed. I just purchased it and I have been taking care of some motor issues (intake manifold water inlet line was rusted off and I replaced the manifold as well as changed water pump, power steering pump, spark plugs, wires and coil pack). Truck is running good now.

The issue is the A/C has stopped working. It worked before I started doing the repairs. The compressor clutch will not engage. I tried jumping the low pressure switch and the clutch did it engage. I have checked the fuses and the relays they are good as well. My question is could the issue be with the dash control? The reason I believe this may be the issue is that the heat is not working either. Both lines are getting warm to the heater core. So I am thinking that the dash controls are just not sending the correct information.

Thanks for any help or ideas of what to check.

whomrig

Hi Paul, it sounds to me that something came loose during your work, so look at everything under the hood.

Paul Lower

Thanks, I have checked and rechecked every connection under the hood. There are no plugs that are not connected or lines that are not connected.

Anyone know how to jump the relay for the compressor?