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-   -   Aux fan and clutch fan (https://www.benzworld.org/forums/w201-190-class/1712839-aux-fan-clutch-fan.html)

Darryl Elkins 05-20-2013 06:51 PM

Aux fan and clutch fan
 
Is the clutch fan actuated by the 100 degree fan switch on the engine? Im trying to test the clutch fan and am only getting response from the aux fan.

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Nfsjunkie91 05-20-2013 09:30 PM

It is on my '87 2.3. At 100C clutch fan and low speed e-fans come on, at 110C clutch fan and high speed e-fans come on.

Darryl Elkins 05-21-2013 05:07 AM

There has to be a second switch if there is something happening at 100 and something else happening at 110. The switch that I was checking is either on or off there isn't a second setting. Where is the other switch?

Anomaly 05-21-2013 04:01 PM

I don't know if you have a 2.3 or a 2.6.

On my 91 2.3 there are 3 temp sensors on the top front. One goes to the CIS, another to the electric fan, and the last to the mechanical fan. I don't remember which is which but it should be easy enough to trace the wires.

holmesuser01 05-21-2013 04:04 PM

1 Attachment(s)
My '84 has a sensor switch on the water pump cover that activates the electric fan.

There is another one up near the oil fill hole that controls the fan clutch. When I got it, my car was wired to run the clutch fan all the time, and it got really loud on the highway.

On my car, the sensor to the right with the red color on it controls the fan clutch. The newer versions of our cars are similar, but the temperature switch might be different.

Nfsjunkie91 05-21-2013 05:09 PM

Quote:

Originally Posted by Darryl Elkins (Post 5788627)
There has to be a second switch if there is something happening at 100 and something else happening at 110. The switch that I was checking is either on or off there isn't a second setting. Where is the other switch?

My vehicle has 1 switch with 3 connections, one 2-pole and one 1-pole. It looks like this: http://www.autohausaz.com/secure/Par...0065454224.jpg

There are several temperature sensors that serve other purposes, but that's the fan switch on mine.

Turnpike 05-21-2013 09:25 PM

Quote:

Originally Posted by Nfsjunkie91 (Post 5789697)
My vehicle has 1 switch with 3 connections, one 2-pole and one 1-pole. It looks like this: http://www.autohausaz.com/secure/Par...0065454224.jpg

There are several temperature sensors that serve other purposes, but that's the fan switch on mine.

same temp switch as the 16v

Darryl Elkins 05-25-2013 02:15 PM

1 Attachment(s)
Here is a pic of what I am working with but from a different angle. However I just realized the photo is up side down.

Darryl Elkins 05-29-2013 08:27 PM

The third sensor and connector do not look like the others posted here. Is the connector with the larger black connector the one? If so how does the cable come off? I hope to make sure the clutch fan works before I take on a 7000 mile trip.

holmesuser01 05-29-2013 08:41 PM

Quote:

Originally Posted by Darryl Elkins (Post 5802256)
The third sensor and connector do not look like the others posted here. Is the connector with the larger black connector the one? If so how does the cable come off? I hope to make sure the clutch fan works before I take on a 7000 mile trip.

The third one in your case is the computer control. Leave it alone.


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