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Old 01-02-2008, 03:17 PM   #1
jamyers
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Radiator cooling fan control wiring question

I've got a couple of Volvo radiator cooling fans(apparently from '01-'03 Volvo S60), one of which is mounted in an old Buick in front of a 455. It works great and moves an amazing amount of air, but it's wired direct from a relay to the fan motor, and only runs on high (and draws a ton of current when running)

My extra fans all have a metal box mounted on the shroud, and the wiring goes through it to the fan motor. From what I've gathered searching online, there is some sort of 2-speed control that may be possible.

Here's a pic of what I've got - Anybody know how I can get some control of the fan speed?
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Old 01-03-2008, 07:24 PM   #2
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Re: Radiator cooling fan control wiring question

Anybody?

Beuhler? ... Beuhler?
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Old 02-25-2008, 04:19 PM   #3
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Re: Radiator cooling fan control wiring question

Take a look at:

http://www.dccontrol.com/0820.htm

This might provide you with a solution.

My source suggested you talk to Brian Baskin at DCC.

jeff
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Old 03-23-2008, 02:49 PM   #4
Mr.Volvo
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Re: Radiator cooling fan control wiring question

Quote:
Originally Posted by jamyers
Anybody?

Beuhler? ... Beuhler?
That little box is a Pulse Width Modulated signal from the ECM, it actually has 4 speeds, 25%, 50 % 75 % and 100%

Your best bet is remove that box, and wire the fan to a temp control devise.
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Old 03-24-2008, 10:02 AM   #5
jamyers
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Re: Radiator cooling fan control wiring question

That's what I was afraid of...

I tried contacting the guys at DCC, never got a response.

I'm looking into other controllers.

Thanks for the info!
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