| Author |
Message |
Walt Pfirman (Waltp)
Junior Member
Username: Waltp
Post Number: 59
Registered: 7-2002
| | Posted on Thursday, September 04, 2003 - 1:44 pm: | |
If the unit is properly charged it should not freeze up at any temp. setting or fan speed. That being said, there are those who purposely use a slightly lower charge so they can get the coldest air at the highest fan speed. That is way I have done mine. |
j scott leonard (Jscott)
Member
Username: Jscott
Post Number: 556
Registered: 1-2002
| | Posted on Thursday, September 04, 2003 - 1:40 pm: | |
Came home for lunch and the a/c didn't even come on. I will check the relay. Thanks! It is hotter than you know where today. 103* |
Paul Hill (348paul)
Member
Username: 348paul
Post Number: 385
Registered: 12-2002
| | Posted on Thursday, September 04, 2003 - 1:23 pm: | |
Scott,
Does it blow cold again if you turn off the A/C then turn it back on again?
If so check that you have a gold relay for the condenser fan in front Relay box.
I had the same problem about 6 months ago and it was the relay that was causing the problems due to there being a standard relay in the socket for the condenser fan. When the condenser fan turns off, the de-energising of the coil generates back EMF - this goes back to the ECU and shuts off the 12V to the A/C clutch and can only be reset by turning the A/C off and back on again. The Gold relay was an update on latter cars (the gold relay has a diode across the coil to stop the back EMF being generated)
Regarding Franks suggestion - there is a sensor that is in the evaporator that if it senses a temperature lower than 3-4 degrees? Centigrade it will send a signal back to the ECU to drop the 12V to the A/C Clutch. Obviously if this is not working the evaporator could freeze up.
The only other thing that I can think off is possibly a dodgy tri-switch on the filter dryer.
Paul
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j scott leonard (Jscott)
Member
Username: Jscott
Post Number: 555
Registered: 1-2002
| | Posted on Thursday, September 04, 2003 - 12:02 pm: | |
I thought of that Frank but I happens quite fast. Only blows cold for about 3 minutes. However, I will check when I go out at lunch time and try setting it to a higher temp. |
Frank Parker (Parkerfe)
Advanced Member
Username: Parkerfe
Post Number: 2905
Registered: 9-2001
| | Posted on Thursday, September 04, 2003 - 11:59 am: | |
It is probably freezing up because you have it turned to the lowest setting. |
j scott leonard (Jscott)
Member
Username: Jscott
Post Number: 554
Registered: 1-2002
| | Posted on Thursday, September 04, 2003 - 11:42 am: | |
Just had my A/C charged in the 348. It comes on and blows cold for a period and then cycles off and blows warm. I have the setting down to the lowest point. Is there a sensor that controls the A/C temp that may be bad? Any suggestions?
Thanks,
Scott |