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A.C. not working right[700/1989] posted by Bob DeLuke on
Saturday, 19 June 1999, at 10:32 p.m.
When its cold out, usually around 50 degrees, the a.c. works o.k. When its warm out, it doesn't work at all. No fan, No a.c. I assume its one of the sensors, probably the one on the dash. Its a 3 wire affair with a small lens in front. The other one is in the ceiling light, but I don't think thats the one giving me a problem. Any suggestions?
Re: A.C. not working right[700/1989] posted by abe crombie on
Saturday, 19 June 1999, at 11:53 p.m.
The solar sensor is not going to cause anything to fail to function on that system. It only makes the system go slightly colder when it's sunny. It sends no signal anytime it's dark outside.
The sensor next to blower motor may be at fault. Turn the air dist knob to face vent, the temp to full cold, fan in AUT, a/c switch off, and recirc on. Now punch the a/c sw on and then off and count the flash code, punch a/c sw again and repeat reading two more times. This will give any fault codes that are present in system. The sensor can be bad and give no code as the system doesn't know it is defective as long as it gives a reading that is within -50F to 180F. If it says it is 60 deg out when it is 96 tye control unit doesn't know it is a bad reading.