new ac system
 

i just replaced the compressor orifice tube and dryer on my 98 and the clutch will not engage. i have tried jumping the cycle switch and it still wont come on. i tried running t12 volts to the plug by the clutch and it kicks on then. any ideas or tips will be appreciated

did u charge the new system did u put oil in the new **** did u put a check the relays

Did you transfer the high pressure cut out switch on the rear of the compressor? If not, the compressor clutch will not engage. The switch is held in place with a snap ring and the refrigerant must be drained before you remove the plug from the rear of the new compressor.

yes added oil checked relay by swapping it with the horn relay and added freon also transferred high pressure swith

I would say your still low on refrigerant.. The compressor will not engage if you dont have the right amount in...

What are your static A/C pressures???
I would check all of the pressure switches (low and high) and wires....could have a faulty switch. Or not enough pressure in the system.

Are you using a manifold gauge set or the gauge that you get with the Freon in a can??

Disconnect the cycling switch: With the ignition in the run position and the A/C on, do you have battery voltage on one wire at the cycling switch harness connector and less than 5 ohms resistance to ground on the other?

Hi all,

I'm in the process of changing the air con compressor in my '99 2dr and wanted to post a warning for anyone who finds themselves in the same predicament. Having just spent several thousand $$ on other repairs I decided to get the cheapest compressor I could find. Did a search on line and found a "Replacement" brand one (PtNo REPC191115) which claimed to be a direct replacement for my car. Long story short, it's not. I'll post the full story in a new thread, but just wanted to post this in a few existing threads so no one gets ripped off like I did.

-Scott

did you put your system on a vacuum pump to get all the air out and check for leaks?
Being a HVAC tech i see this all the time they dont get the air out and doesnt run properly.

Haven't vacuumed the system. Had a local repair shop recharge the system while they were doing other repairs. It dumped the lot over a weekend, with a ton of dye around the center of the compressor body, hence my current dilemma.

The service manual doesn't mention vacuuming the system when replacing the compressor. Is this essential when the system has been depleted through either a leak or the replacement?