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Join Date: Feb 2004
Location: NJ
Posts: 317
Porsche Crest 944S2 Radiator Fan Relay

Need help! I have a 1990 944s2 and want to check my radiator fan relay to see if it is bad before I spend $100 for a new one. The fan keeps runnig! If you live in or near Chatham N.J. and have a 944 and want to help me out by letting borrow yours for a test please let me know.
Thanks,
Robert
Old 06-14-2004, 04:33 PM
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Just pull it out, and take to it with a multitester, and a 12V battery with resistors to limit current. I wish I could give you pin numbers to check, but I haven't seen the relays in the 1990. I think Clark's Garage had a testing procedure outlined. And if you ever decide to sell the car, PM me, would ya? I'm looking for an S2.
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White 1985/1 944

--my first car
--limited slip differential
--cross drilled rotors
--omnimagnum high-energy ignition
--CB equipped
--laptop installed, seeking GPS chip

--keep the socks away from my car
Old 06-14-2004, 05:12 PM
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Thanks! Do you have the e-mail for clarks garage? I think it will be awhile before I sell my cab as I looked a long time for one that was in excellent condition,
Robert
Old 06-14-2004, 05:18 PM
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www.clarks-garage.com
__________________
White 1985/1 944

--my first car
--limited slip differential
--cross drilled rotors
--omnimagnum high-energy ignition
--CB equipped
--laptop installed, seeking GPS chip

--keep the socks away from my car
Old 06-15-2004, 03:52 AM
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I don't believe it's the relay. I had the same problem where the fan drained my battery down. It turned out to be the thermo-switch. That brass thing in the radiator. I had to remove the belly pan, then lower the radiator fans down befor I got a wrench on it. I had a posting earlier about this.
http://forums.pelicanparts.com/showth
read.php?s=&threadid=139259
thermo-switch (951.606.481.00 and like $10)

Why don't people listen to me.

John
944S2 Cab
197k miles

Last edited by jetmax; 06-16-2004 at 05:56 AM..
Old 06-16-2004, 05:52 AM
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I've had the reverse problem--my thermofan switch closed about 10 deg higher than it should have. The testing procedure does involve checking that switch, but I guess I assumed that he checked it. Should be simple enough--if disconnecting it turns off the fans, it's stuck closed.
__________________
White 1985/1 944

--my first car
--limited slip differential
--cross drilled rotors
--omnimagnum high-energy ignition
--CB equipped
--laptop installed, seeking GPS chip

--keep the socks away from my car
Old 06-16-2004, 08:44 AM
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