Heater control delay and a/c compressor short-cycle October 26, 2011, 09:16:05 PM I'm having an issue with my recently purchased Cougar...When I start the car and turn on the manual climate control to any setting, airflow is always coming from the defroster vents. If I move the control to "vent", it takes anywhere from 2 to 5 minutes before airflow changes to the dash vents. Temperature control seems to work ok. I also had no a/c and no compressor action so I checked the a/c charge with an R-134 retrofit kit/gauge and it was low so I charged it to the max recommended. Now I can get some dehumidifier action through the defroster but still no a/c. When I am set on a/c, the compressor short-cycles on and off quickly. Any input? Quote Selected
Heater control delay and a/c compressor short-cycle Reply #1 – October 27, 2011, 01:15:42 AM With no vacuum to the climate control it defaults to defrost. Sounds like your vacuum is very low. probable a leak somewhere. The vacuum line runs from the vacuum tree along the top of the firewall. On the passenger side of the fire wall the vac goes to a check valve. One of the two lines out of the check valve goes through a hole in the firewall to the climate control. The other line goes to the vacuum tank under the passenger side fender.Notice in the diagram with the doors in the NV (No Vacuum) position, the air goes to defrost.Don't know what to say about your A/C short cycling. That normaly indicates a low freon charge. Quote Selected
Heater control delay and a/c compressor short-cycle Reply #2 – October 28, 2011, 07:01:30 AM You h Quote Selected
Topic: Heater control delay and a/c compressor short-cycle (Read 792 times)
previous topic - next topic
Topic: Heater control delay and a/c compressor short-cycle (Read 792 times)
previous topic - next topic