Yes, all pressures are with the compressor running. Service ports are easy to get to because I moved them to the rear, upper area. It's a diesel pusher motorhome. OK what should the static pressures read? I'll check them out. How can I tell if the system is overcharged?

I put another 20 oz of Freon in and got the compressor to cycle a couple of times for sort duration. When the compressor ran, the high pressure side went up to 280-300 but as soon as it cut out, the pressure went back down to 110-125 and pretty much stayed there. No cooling at the outlets, just ambi...

The evaporator air is totally separate from the heater core. It is off and cannot mix. Cruising is about 2400 RPM. This morning, the low side is 25-28 pounds and the high side is 100. The compressor is staying disengaged and no cycling. I think it's still low on Freon but it doesn't want to take any...

The suction line is cool but not cold. The high side line is very hot to the touch. The compressor cycles on and off on pressure switches. One for the high, one for the low. They are new and the correct pressures according to Transair.

The system doesn't seem to take refrigerant as it should. Probably only has about 7-8 pounds in it. As far as liquid charging are we saying I need to charge the high side with engine off and tank inverted? I know you can't put liquid in to the low side or you will kill the compressor with a fluid lo...

The system in my Wanderlodge Bluebird bus has never worked right so I have done lots of work and spent lots of $$$ on it but its still not working very well. I put a new compressor from ACKITS on it, and spent over $1K to have the condensor and evaporator flushed out and repaired by Pacific Coolers ...

Does your manifold/gauges take special o rings other than the a/c system itself?

First make sure that the vacuum pump to gauge set connections, gauge set itself, and the hoses are not the problem. I think this is my problem. I disconnected the manifold, gauges, etc. and put direct gauges (other ones) to the fittings. It is holding steady at 65 psi of nitrogen. That tells me it'...

I put a positive charge of pure nitrogen in the system of 60 pounds and sprayed down the connections with soapy solution. Nothing showed up but even the nitrogen charge gradually leaks down. Apparently it's a slow leak which is hard to find.

I was not planning to contaminate the system. The plan is to put positive pressure on the system with shop air and spray the outside of the system with the soapy solution. Don't want to charge because I don't have a recovery system and all refrigerant would be lost.