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Meph · 07-25-2010, 03:15 PM

Hello Again,

Once again trying to squeeze out some more MPG from Toyota Powered Datsun.

I run an after market ECU so i can control all the variables, so my next tuning stage is to get my thermo fan on at the right times. Right now its on at 192 and off and 186, but I think this number is a little low, I believe my thermo opens around 185, the standard one.

MY temp is always at 189-190 so the fan is always on when Im driving (overlap between the thermostat and fan settings im guessing), i think over time this extra current draw will hurt gas mileage.

would it be safe to run the fan at say,

on:205f
off:200f

Id hope to get to a point where the fan doesn't need to be on and lets the rad and airflow do the work.

whats the school of thought for a decent on off setting?

Thanks a lot!

07-25-2010, 03:15 PM	#1 (permalink)
Meph EcoModding Lurker Join Date: Apr 2008 Location: ontario Posts: 84 240Z - '73 Datsun 240Z 240Z 90 day: 34.41 mpg (US) Thanks: 15 Thanked 8 Times in 4 Posts	Thermo Fan Settings Hello Again, Once again trying to squeeze out some more MPG from Toyota Powered Datsun. I run an after market ECU so i can control all the variables, so my next tuning stage is to get my thermo fan on at the right times. Right now its on at 192 and off and 186, but I think this number is a little low, I believe my thermo opens around 185, the standard one. MY temp is always at 189-190 so the fan is always on when Im driving (overlap between the thermostat and fan settings im guessing), i think over time this extra current draw will hurt gas mileage. would it be safe to run the fan at say, on:205f off:200f Id hope to get to a point where the fan doesn't need to be on and lets the rad and airflow do the work. whats the school of thought for a decent on off setting? Thanks a lot! __________________