Trouble shooting assistance - A/C compressor shuts off
07-09-2005, 09:56 AM
#1
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Trouble shooting assistance - A/C compressor shuts off
Hello All,
I am out of ideas on how to resolve a problem with my A/C compressor shutting off automatically. The compressor shuts off when my temp gauge needle rises between the two small dots. The overheat warning light comes on as well but the car is never in any danger of overheating.
My coolant fans work fine and switch off and on. I have replaced all 3 temperature sensors/themoswitches (G62, F76, and F54). This has not fixed the problem.
I checked all my fuses and they are all fine.
I have no trouble codes when I run the minicheck. Also, when reading the coolant temperature via the climate control diagnostic feature, it registers no higher than 90 degrees centigrade.
Any thoughts on what could be the cause of the problem?
Thanks!
I am out of ideas on how to resolve a problem with my A/C compressor shutting off automatically. The compressor shuts off when my temp gauge needle rises between the two small dots. The overheat warning light comes on as well but the car is never in any danger of overheating.
My coolant fans work fine and switch off and on. I have replaced all 3 temperature sensors/themoswitches (G62, F76, and F54). This has not fixed the problem.
I checked all my fuses and they are all fine.
I have no trouble codes when I run the minicheck. Also, when reading the coolant temperature via the climate control diagnostic feature, it registers no higher than 90 degrees centigrade.
Any thoughts on what could be the cause of the problem?
Thanks!
07-09-2005, 04:06 PM
#4
Have you looked here-
12v.org?<ul><li><a href="http://www.12v.org/maintenance/index.php?section=tr&ss=hvac">http://www.12v.org/maintenance/index.php?section=tr&ss=hvac</a</li></ul>
07-09-2005, 05:03 PM
#5
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Yes indeed. Consulted Bentley too.
From what I know thus far, the conditions listed at 12v.org do not apply. I keep my system from shutting off by disconnecting the electronic themoswitch (F76). A/C compressor stays on and never shuts off with F76 disconnected. The temp gauge does not register with F76 disconnected, but I monitor the coolant temp via the climate control diagnostics. It never exceeds 90 degrees centigrade. Also, the climate control diagnostics do not register any troulbe codes.
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07-09-2005, 05:51 PM
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Last spring replaced heater core, evaporator and recharged system.
No problems last summer. Just started happening this year about a month ago.
As mentioned earlier, no trouble codes present using climate control diagnostics.
A/C works fine and never shuts off when F76 disconnected.
As mentioned earlier, no trouble codes present using climate control diagnostics.
A/C works fine and never shuts off when F76 disconnected.