RADIATOR BELT FAN REPLACEMENT
I found a piece on google about changing the belt fan with an electric one but can find a DIY. Can someone help?
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Can I link it to the other fan ? also what temp does the other come on? will I need to change the thermo switch?
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Originally Posted by nickid
(Post 24523292)
Can I link it to the other fan ? also what temp does the other come on? will I need to change the thermo switch?
It has another speed that will kick in (without AC) only if the coolant temp gets above normal. It has a 3rd (high) speed that will kick in if AC refrigerant reaches abnormally high pressure. |
will either put in a temp sender or run it on a switch
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Originally Posted by nickid
(Post 24523542)
will either put in a temp sender or run it on a switch
These signals are processed through the fan control module before being transferred to the fan itself and one might assume that the belt fan keeps that side of the radiator cool enough (at normal temp) to prevent the switch from triggering the electric fan...my electric fan NEVER runs at 88-92C with the AC off, but will cycle on (and higher speed) when idling in hot weather and reaching higher 90's on coolant temp. P.S. Do NOT use the temp gauge to determine "normal" (90C) operating temp...it is designed by Audi to lie to you. The instrument cluster processor (or the gauge itself?) will cause this gauge to read a dead steady 90C (normal thick hash mark) when the actual coolant temp is 81-100C. Only code "102" on the climate control "secret codes" will give you the true temp reading >>> https://www.audiworld.com/forums/sho...5#post24093545 So, in theory, without "interference" from the belt fan, the OEM thermal switch might indeed trigger double fans at the correct coolant temps. |
Thank you for the info. now I need to try and fit it all ?
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I haven't fitted the new electric fan yet, but have removed the belt fan and have been running the car while the weather is cold, and what a difference the cars response is without it.
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Originally Posted by nickid
(Post 24533285)
I haven't fitted the new electric fan yet, but have removed the belt fan and have been running the car while the weather is cold, and what a difference the cars response is without it.
Eric |
yes mate you do have the better weather, but I would at least take off the fan at the big nut to try it.
Also I am adding a thermo switch to run the electric fan |
Why?
I have a difficult time with changing the design of what is (IMO) one of, if not, the best engineered piece of transportation on the planet.
If you are having to deal with overheating issues a aftermarket electric fan is questionable (IMO) and a wasted effort at an upgrade. But it's your effort, so onward through the fog.. pc |
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