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#1
10-22-2006, 02:03 PM
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aux fan mysteriouly started running on my 603
After a long drive (well long for me anyway) from SSF to SF and back i parked the car and watched the rest of the le mans race. After it was over i had to pick up my syster from work so i start the car and hear a humming.
Pop the hood and see the aux fan running  But the belt driven fan is working just fine? So i drive it around like this thinking the aux fan would shut off after it has wind hitting it but its still running.What could be causing this? i dont run the AC only heat in the cold mornings but it was warm yesterday so i didnt use it. Thanks in advance for all your help.
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Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed 
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#2
10-22-2006, 03:01 PM
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Presumably, one of the switches is closed.
One switch is on the dryer and signals the fan to run at 1/2 speed when the pressure is excessive. Just disconnect the leads to this switch and see if the fan stops. The other switch is the three pole switch on the top of the thermostat housing. Disconnect the leads to this switch and see if the fan stops.
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#3
10-22-2006, 03:10 PM
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ok i disconnected it and it stopped. Drove it around and temp gauge shows 80 and hasent risen.
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Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed
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#4
10-22-2006, 03:12 PM
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Quote:
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#5
10-22-2006, 03:14 PM
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well i disconnected a cable that is right behind the driver side headlight. or is that the wrong cable to disconnect?
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Current: 05 E320 CDI 07 GL320 CDI 08 Sprinter 05 Dodge Cummins 01 Dodge Cummins Previous 2004 E55 AMG 2002 C32 AMG (#2) 1995 E300 1978 300D 1987 300D 2002 C32 AMG(blown motor :[ 1981 300SD 1983 300SD 1987 300SDL 2002 Jetta TDI 1996 S420 1995 S500 1993 190E 2.6 1992 190E 2.3 1985 190E 2.3 5-Speed
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#6
10-22-2006, 03:15 PM
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Quote:
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Hybrid Mode
