At what temps do you turn on your rad. fans?
This goes for anyone with stand alones...at what coolant temps do you turn on and turn off your radiator fan(s)? I think mine turn on around 208 and off around 200, but I'm not sure if this is right. I have no idea what OEM ecu does either.
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All the defualt MS users use 170 degrees farenheit. OE runs at 190 i believe but i could be wrong.
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I have a 180 Thermostat, so around 190 for me
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OE 1.6 comes on at 97c/207f, OE 1.8 NA 95c/203f.
I had my fan coming on at 93c (180f tstat) following the theory that it's easier to keep the coolant from getting hot vs. trying to cool down the hot coolant. But I bumped the on temp back up to the stock 97c because it was coming on all the time (and it's a loud spal straight blade). At 97c on it rarely comes on. There is definitely a plateau in the coolant temp rise after 93c with my car. |
Stock ECU: Mine kick on at 180°, turn off around 175° (180° thermostat)
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Originally Posted by Braineack
(Post 122268)
Stock ECU: Mine kick on at 180°, turn off around 175° (180° thermostat)
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Originally Posted by jayc72
(Post 122277)
Then there is something wrong with your thermoswitch or the method you are using to read coolant temp. OE ecu on the 1.6 cars does not control the fan.
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NA 1.6, by the book, is supposed to turn on above 207 F(97C) and off below 194F(90C)
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Originally Posted by olderguy
(Post 122281)
NA 1.6, by the book, is supposed to turn on above 207 F(97C) and off below 194F(90C)
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yeah, I believe I'm reading temps from the sensor off the t-stat housing...so it will probably be lower than theromosensor readings. At least I know the t-stat is opening when it should :rofl:
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Originally Posted by Braineack
(Post 122284)
yeah, I believe I'm reading temps from the sensor off the t-stat housing...so it will probably be lower than theromosensor readings. At least I know the t-stat is opening when it should :rofl:
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Originally Posted by Atlanta93LE
(Post 122279)
But remember, the temp at the thermoswitch is different than at the coolant temp sensor on the back of the engine.
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Main fan comes on at 175F. So it stays on the whole time. A/C fan runs off the thermoswitch which switches at 206/207.
One of my future projects is to grab the VSS signal from the cluster to interrupt the fan circuit over a certain speed. That's way down on the list though. I was also going to try to remove the a/c side fan, just to see what happens. |
Originally Posted by jayc72
(Post 122288)
The link uses the OE temp sensor. With in a couple of degrees of 97* as indicated on the link I can hear the fan kick on.
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