Does anyone know of the location of the ac relay on a '81 rabbit pickup? My ac is not getting cold at all. I think it's charged correctly, but I'm not 100% sure. If I could change the ac relay, I could eliminate that possibility.
The 81 doesn't really have a relay, it has a bunch of switches. The switch that controls the cooling is located at the top right of the heater box, and has a capilary tube that runs to the core.
A lot of issues with your a/c has to do with the heater valve not being fully closed or broken.
The heater valve replacement is a iffy thing and makes turning your control switch hard, so a better valve to use is the 1984 Porsche 944 non-vacuum heater valve. Make sure that your valve is fully closed prior to buying a new one.
Okay. So I got the porsche heater valve, but I'm not sure how to install it. There's an arrow on it which I pointed in the same direction as the old one. However, the cable is now on the bottom. Is that correct?