Join Date: Dec 2009
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Thanked 0 Times in 0 Posts
Feedback Score: 0 reviews
2001 Excursion A/C issues, need help, have gone bald with frustration
This started when I replaced the heater water control valve and snapper the MAP sensor vacuum port off last week. The A/C was already starting to cool poorly, but the compressor clutch was working. I can't imaging how these could be related.
Repairs so far:
1. Replaced the hot water control valve and MAP sensor.
2. Check the A/C and the clutch was not engaging
3. Had a small hole in the rear pressure line where the spring mount rubbed through. Removed, repaired, reinstalled.
2. Replaced the orifice tube with a new variable one while the system was down. (It is already hot in Texas)
1. The compressor clutch was not engaging before the problem. Air gap is .028
2. The compressor clutch will not engage unless I put volts directly to it.
3. Tried jumping the high and low pressure switches - nothing
4. Checked the fuses I can find that are related #24 on the interior fuse box and #502 A/C Clutch Diode in the engine bay. Are there others?
5. Voltage with my volt meter seem to vary and I am not sure what is correct. .5-7 Vdc on the pressure switches and intermittent on the clutch.
6. Recharged, with jump wires to the compressor, about 68-70 ounces of 134a my low pressure is about 59 and my hi side is about 225-250. Adding more freon raised the low side to about 65, so I am not thinking that is helping. I know the low side should be in the 40s but it is just idling in the driveway.
7. Not sure what to do next.
Last edited by Texas EX 7.3; 06-03-2012 at 07:28 AM.