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Cooling fan on/off question...

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Old Mar 25, 2005 | 03:21 PM
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Default Cooling fan on/off question...

Hello,
After reading a number of threads on cooling fan on/off temperatures, I'm still not sure what the best temperatures would be to reprogram the cooling fans at...
Some people have the two fans staggered in 9 or 10 degree incerments (ex. Fan 1 on/off at 209/200, Fan 2 on/off at 219/210).
Other people have both fans come on at practically to same time (ex. Fan 1 194/185; Fan 2 196/186).
What would determine the ideal on/off settings? Any general rules, hints, or suggestions?
I have a 170 degree t-stat installed.
Thanks.......
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Old Mar 26, 2005 | 12:58 PM
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ttt
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Old Mar 26, 2005 | 05:06 PM
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Mine are programmed like this (which are the lowest recommended settings for 195 degree thermostat) Fan 1 on at 210 and off at 200
fan 2 on at 215 and off at 205. However since you have a 170 degree stat, this info may be worthless for you.
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Old Mar 27, 2005 | 10:43 AM
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Do a search on this thread title in C5 Tech section. It has the information you are looking for. Sorry, didn't know how to post the direct thread link.

Is 160 Degree Thermostat okay?
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Old Mar 27, 2005 | 12:27 PM
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with 172 therm,
1st on @191, off@ 183
2nd on@204, off@ 193
Fred
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Old Mar 27, 2005 | 01:19 PM
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Fred

Thanks, I am having my car dyno tuned on 31 Mar and this info will be helpful.

Thanks again

Bill C
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Old Mar 27, 2005 | 04:02 PM
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Originally Posted by FKING1
with 172 therm,
1st on @191, off@ 183
2nd on@204, off@ 193
Fred
Fred,

How did you decide on those particular on/off temps for your 172 t-stat? Is there a formula you went by?
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Old Mar 28, 2005 | 02:31 PM
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ttt
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