XJ XJ8 / XJR ( X308 ) 1997 - 2003

XJR 1999 air conditioner

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Old 03-08-2010, 11:59 AM
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Default XJR 1999 air conditioner

hi guys...
I have a question about my car.
When I turn off the A/C and the car is running, the fans are still working.

(If I dont use the A/C the funs only work when the temperature goes up.)
(My car doesn´t have temperature problem)

Is this normal or my car has some problem?
 

Last edited by tanngo; 03-08-2010 at 11:40 PM.
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Old 03-08-2010, 01:42 PM
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Are you turning of just the AC by pressing the AC pushbutton, or turning off the temperature control system by depressing the fan button? If just turning off the AC button, this is normal.
 
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Old 03-08-2010, 02:00 PM
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I turn it off pressing the A/C button.Whats the difference?
 
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Old 03-08-2010, 02:03 PM
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That just turns off the AC compressor but not the rest of the system, like heater and fans. As long as cabin temperature is lower than set temperature, the system will still attempt to heat the cabin to reach set temperature. Depressing the fan button turns the entire system on and off.
 

Last edited by QuadManiac; 03-08-2010 at 02:05 PM.
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Old 03-08-2010, 02:06 PM
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OK, but the fans that I mean are the radiator fans.
 
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Old 03-08-2010, 02:10 PM
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Ah! Not understood from first post.

I suspect (but don't know for certain) that the cooling fans will remain on for some time after the AC compressor is turned off in order to continue cooling the pressure heated freon in the condensor.

One with better knowledge may be able to answer for sure.
 

Last edited by QuadManiac; 03-08-2010 at 02:13 PM.
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Old 03-08-2010, 02:16 PM
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SORRY!! I mean the radiator fans.
When I turn the A/C off, they still working.
They only turn off if I turn off the car or when the cooling system is in low temperature.
 
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Old 03-08-2010, 04:03 PM
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Understood, and I suspect that they stay on to continue cooling the heated freon in the condenser coil, which is directly in front of the radiator.
 
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Old 03-08-2010, 11:07 PM
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late very much in extinguishing fan . only when car this very cold
XJR 99, ONLY 10,000 miles, SUPER NEW
 

Last edited by tanngo; 03-08-2010 at 11:39 PM.
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Old 03-10-2010, 10:33 AM
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Originally Posted by tanngo
SORRY!! I mean the radiator fans.
When I turn the A/C off, they still working.
They only turn off if I turn off the car or when the cooling system is in low temperature.
any suggestions ....
 
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