| Author |
Message |
JohnR. (Rivee)
Junior Member
Username: Rivee
Post Number: 76
Registered: 1-2002
| | Posted on Sunday, August 11, 2002 - 11:46 pm: | |
Edward, the reason I said to connect +12v power directly to the pump was to see if the clutch engaged. If it did then their is a multitude of possibilities including lack of refrigerant in the system which would prevent it from engaging.
I didn't see the harm in it...... |
Frank Foster (Sparta49)
New member
Username: Sparta49
Post Number: 49
Registered: 3-2001
| | Posted on Sunday, August 11, 2002 - 6:59 pm: | |
I was able to get power to the a/c clutch, I cleaned the two connections at the low pressure switch and voila I now have cold air. Thanks for all the help. |
Edward Gault (Irfgt)
Intermediate Member
Username: Irfgt
Post Number: 1766
Registered: 2-2001
| | Posted on Sunday, August 11, 2002 - 6:24 pm: | |
He already said that he hooked up a test light and there was no power so therefore the clutch will not engage if there is no power. |
JohnR. (Rivee)
Junior Member
Username: Rivee
Post Number: 75
Registered: 1-2002
| | Posted on Sunday, August 11, 2002 - 5:29 pm: | |
Frank, Greg has the best answer. Try hooking +12 volts to the clutch directly and see if it engages |
Edward Gault (Irfgt)
Intermediate Member
Username: Irfgt
Post Number: 1759
Registered: 2-2001
| | Posted on Sunday, August 11, 2002 - 6:37 am: | |
The console is in the cockpit. The pressure switches are under the cover in the bonnet. You may want to let a Pro look at this problem. |
Kelly J. Vince (Tifosi1)
Member
Username: Tifosi1
Post Number: 333
Registered: 2-2002
| | Posted on Saturday, August 10, 2002 - 9:30 pm: | |
Frank,
Take two aspirn and call me in the Morning.
I got to cut up some fire wood that a neighbor is giving me. Why don't you come over tomorrow afternoon. |
Bruno (Originalsinner)
Member
Username: Originalsinner
Post Number: 374
Registered: 5-2002
| | Posted on Saturday, August 10, 2002 - 8:25 pm: | |
There is high low pressure switches in earlier cars. I would bet it is in yours also.I dont have a schematic for your car so I cant say for sure.
They refer to them as max. and min. pressure switches. Also the thermostat is in series with the clutch. |
Frank Foster (Sparta49)
New member
Username: Sparta49
Post Number: 48
Registered: 3-2001
| | Posted on Saturday, August 10, 2002 - 5:06 pm: | |
ED, The connector is in the cockpit or under the spare tire cover??
|
Edward Gault (Irfgt)
Intermediate Member
Username: Irfgt
Post Number: 1756
Registered: 2-2001
| | Posted on Saturday, August 10, 2002 - 4:55 pm: | |
The compressor power is fed from the fuse box to the fan switch via a white wire that goes from the fan switch to the thermostatic switch to the low and hogh pressure switches under the bonnet then to the compressor. There is a connector under the forward portion of the console that is notorious for overheating and causing a loss of power or high resistance. |
Greg Rodgers (Joechristmas)
Member
Username: Joechristmas
Post Number: 427
Registered: 3-2001
| | Posted on Saturday, August 10, 2002 - 4:16 pm: | |
I would check your ground. There are pressure switches that you can check also. Also put 12V to the compressor/clutch assem. and see if the clutch engages. If it doesn't check the ground. Then if it still doesn't engage with a seperate 12V to it then the clutch isn't functioning properly. |
Steve Magnusson (91tr)
Member
Username: 91tr
Post Number: 907
Registered: 1-2001
| | Posted on Saturday, August 10, 2002 - 3:46 pm: | |
There might be high and/or low pressure detection switches in series with the clutch winding, but you wouldn't have the first F to just generally fry something in the +12V power distribution network so could be anything. Do you have an OM with schematic? -- it shouldn't be too hard to trace the +12V side of things to the AC clutch. |
Lawrence Coppari (Lawrence)
Junior Member
Username: Lawrence
Post Number: 150
Registered: 4-2002
| | Posted on Saturday, August 10, 2002 - 2:26 pm: | |
My clutch, a 328, has two wires. One is grounded where the oil dipstick tube is fastened to engine at the top near the clutch/compressor.
Don't know how a test light works. I use a multimeter. Did you open the positive wire to clutch to check it by putting the test light in series to ground? Is there another fuse in the system for AC clutch? |
Frank Foster (Sparta49)
New member
Username: Sparta49
Post Number: 47
Registered: 3-2001
| | Posted on Saturday, August 10, 2002 - 1:55 pm: | |
I installed the new compressor, drier, and a working clutch. The system has been charged. However the clutch is not engaging, the radiator fan comes on and both the relay and fuse are good. When I put a test ligh on the power supply for the a/c clutch there wasn't any power going to the wire, any ideas or where to start??? |