![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
#1 | ||
Board Member
Join Date: Aug 2003
Location: Ocean Springs, MS
|
![]() 1993 940 wagon with Rex/Regina. How does the cooling fan operate? There is a switch in the radiator that when closed runs the fan on high. What temp should it be closing at? What about lower speeds? I’ve heard there are manifold switches on the ac compressor. But my ac is completely discharged. So I’m assuming with the ac not charged,I’ll only see the fan on high triggered by the switch in radiator. Is this correct ?
__________________
Berserker 242 Build Thread Quote:
Quote:
|
||
![]() |
![]() |
![]() |
#2 |
Salaminizer
Join Date: Nov 2007
Location: Reading pa
|
![]() The thermoswitch in the radiator usually says the temp on it, very small writing. I don't know about your other questions because I have never had a car with the e fan stock, I add them later and always run them on the high speed. The only thing that affects it is that switch turning the fan on, at least when I've done it.
__________________
Feedback thread https://forums.tbforums.com/showthread.php?t=144924 1979 242 B21 on MS, waiting on L33 2006 V50 T5 AWD 16 PSI + |
![]() |
![]() |
![]() |
#3 |
Board Member
Join Date: Feb 2014
Location: Midwest
|
![]() A 1993 regina car has only 2 on switches for the cooling fan, both of which are external.
Low speed is controlled by a pressure switch in the condenser for when the ac is on. So yes you are correct, you will never see low speed operation without the ac being on. High speed is controlled by a temp switch in the end tank of the radiator. It will come on around an indicated 225-230F at the thermostat housing. Very very toasty IMO. It is very easy to tap into either low/high speed signal wire and add a switch if you want an override control over the fan.
__________________
Feedback Thread Current: 93' 244T m47 93' 245 m47 90' 744 AW70 94' M-Edition Miata, 93k 95' Camry auto, 246k 93' Camry auto, 278k Past: 80' 242gt m46 88' 245T m47 92' 940 turbo AW71 94' 945T AW71(L?) |
![]() |
![]() |
![]() |
Thread Tools | |
Display Modes | |
|
|