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Capt Bob
 
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Oil cooler fan test switch

Got a question - How do I test the oil cooler fan switch on my 1982 930? I checked the harness and I can run the fan by jumping power across the solenoid up by the forward fuse panel and the fan runs fine. The temp switch on the left side chain cover and is in a real bad area with intake pipe to the turbo.

'm not sure if it works and or what temp it is set to turn on the fan.
Old 12-05-2017, 08:38 AM
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That switch in your picture is the thermo-time switch that controls cold starting through the cold start valve. (not an oil cooler fan) The oiler cooler fan can be switched via a switch or thermostat switch located on the oil cooler.

Temp Switch Sender Kit for Oil Cooler Fan 911 Carrera - 930 turbo By Patrick Motorsports Porsche & Mid Engine Performance Specialists
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Old 12-05-2017, 10:21 AM
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Capt Bob
 
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Ok thanks for the info. I will check the oil cooler for the temp switch. Thanks!
Old 12-05-2017, 06:34 PM
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Some people replace the original oil cooler fan thermostat switch with a similar one for BMW's that turns the fan on at a lower temperature. It fits the same threads.
You can also hook up a manual rocker or toggle switch to turn it on anytime.
Old 12-05-2017, 06:52 PM
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Correct me if in error, I thought for USA cars oil cooler was not equipped w/ fan until 87? I see you have an 82 meaning Euro orig. I believe fan sensor is supposed to trip at around 244F. I did the manual rocker switch on my 86.
Old 12-05-2017, 08:33 PM
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Capt Bob
 
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Yes my 930 is a Euro but has been updated over the years. 244F seems high to me and especially being in Florida I would prefer to see the temps 20 degrees lower than that. Maybe a manual rocker for me rather than hoping the temp switch works when I'm stuck in traffic somewhere around Tampa.
Old 12-06-2017, 10:40 AM
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what does you oil temp run at now?
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Old 12-06-2017, 12:00 PM
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On my '77 I wired the headlight washer switch on the dash into the circuit so I can also turn on the oil cooler fan manually when I want instead of waiting for it to first get hot enough for the temp switch to activate the fan. I never use the headlight washers anyway and it leaves a stock appearance.
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Old 12-06-2017, 03:31 PM
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Quote:
Originally Posted by 1974carrera View Post
On my '77 I wired the headlight washer switch on the dash into the circuit so I can also turn on the oil cooler fan manually when I want instead of waiting for it to first get hot enough for the temp switch to activate the fan. I never use the headlight washers anyway and it leaves a stock appearance.
I did that too and in vegas I left it on most the time. You should use a relay as it over heated my switch.
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Old 12-06-2017, 09:28 PM
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Quote:
Originally Posted by quattrorunner View Post
I did that too and in vegas I left it on most the time. You should use a relay as it over heated my switch.
Good suggestion about the relay. IMO any cooler fan should use a relay regardless of whether or not a manual switch is used.
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Old 12-07-2017, 06:56 AM
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Capt Bob
 
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During the summer in Tampa Florida the engine temps would creep up above 250 degrees. Also, I'm running synthetic oil in the engine as well. Now with the weather cooling off in Florida the car typically runs around 220 or so. Additionally, I recently installed the air scoop (see photo) that helps increase the air flow across the oil cooler and of course helps dissipate the heat. I'm planning on fixing the oil cooler fan switch issue this weekend and I should then be prepared for next summer.
Old 12-08-2017, 04:18 AM
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