Hello,
There is a switch on the accumulator, Unplug it and jump the 2 sides with a piece of wire. Turn the car on with the A/C on, Hook up your freon to the schrader valve and open it up. Your system will start up once it gets some freon in it, do your fill and then put oem plug back into the switch.

Sellncars

Do you jumper on the accumulator, or on the connector?
Thanks,
John

you would jumper the connector to bypass the low side switch.

But seems to me that you should be able to get enough into the system without doing that. Even with the engine off you can charge the system at least to the pressure that is in the can itself. I think you are either being impatient, or that fitting is not working right. The fitting you used, did it require that you remove the valve core that was there to begin with, or does it depress that core?

I converted the r12 fittings to r 134 using the fittings that came in the kit. I made sure that I had the can fitting securley fastened to the low side fitting. The gauge immediatly went into the yellow zone, then approached the red zone so I stopped. The system would not take any refridgerant at all, & the compressor won't engage. I need to try jumpering the connector but I want to make sure that I am doing this correctly...I unplug the black connector from the 2 prongs on the accumulator...do I insert the wire in the black connector from one contact to another, or do I attach the wire to the 2 prongs on the accumulator? Do I do this before starting the car? Do I need to be ready to quickly charge the system in case the compressort kicks in only briefly?
Thanks,
John

Hold on, did you check the PCM for a code 66?

ok, i have to jump in here...

I had this same problem a few weeks ago with my 92 SSE. The pressure gauge was reading really high and it wouldnt accept fresh gas. The system was previously empty.
I found that when I started the car, the low gas tripped an error in the PCM, and shut off the compressor. Even switching off and restarting didnt enable the compressor.

I had to remove the battery cable to reset the PCM. Then hooked up the new gas (with oil - dont forget) and started the car. I found I would get about 30 seconds before the PCM would trip again and during the first 30 seconds while the compressor was running, I emptied that gas into the system. I think it took 2 8oz cans of gas. So after removing the battery cable a couple of times and restarting the car, the compressor now stays on and is cols - works great.

Just keep resetting the PCM by removing the battery cable, and feed it gas. After a few times, it will work.

I have not yet checked for codes. Can't I check the codes on the ATC display? Or do I need to have someone plug into the PCM to pull codes related to the auto climate control. I thought I read in tech info that you can pull ac codes from the atc display?
John

i have code 66 and electric climate control how do i clear it if i use the info in tech info and it didnt work?

Remove the battery cable to reset the PCM

Fuddy,
I ran diganostics on the automatic climate control & got code 48, which is long term freon loss. I cleared the code, started the car with the automatic climate control on AUTO, & opened the valve to dispense the freon on the low side, but the gauge immediatly went into the red zone, so I stopped. I also unplugged the black connector on the accumulator & jumpered it, but again the gauge went into the red zone. The compressor seemed to be running, & the automatic climate control did stay in the AUTO mode the entire time that I ran the car with the AC on. It just wont take the refridgerant.
A few weeks ago I had a shjop test the system & they found that it was completely empty, with small leaks at the compressor & condensor.
Any ideas?
Thanks,
John