Bones SS

I have a stock t-stat and I would like to reprogram my fans. I searched but couldn't find a clear answer to my question. How does F1 196/188 and F2 198/190 sound? TIA

foff667

iTrader: (2)

stock is 192 or 195 if i remember correctly...so i wouldnt have the fan turn on below the thermo temp otherwise the fans will never turn off once you hit operating temp.

dynocar

I do not recall what the stock thermostat rating is but it is important to keep your fan off times a couple of degrees above it. Example, if you have a 195 deg thermostat, F1 could be 204/197 and F2 206/198. If you do not keep your fan off temp above the thermostat your fan(s) will run continuously. Also, bi-metal thermostats are not a precision sensor, especially as they age, so keep your off temps further away from old ones.

Bones SS

Hmm, I thought the stock was 180-185, now you've got me wondering. Anyone know for sure what the stock t-stat runs?

SmokingWS6

iTrader: (1)

Correct numbers are.

Low on/off. 226/219*
high on/off. 234/227*

i've found most stock tstats to be 180*. I have come across a few 00 cars that appeared to have a 195* stat.

Blacker

iTrader: (3)

My stock thermostat was 195* and was verified with water.

SmokingWS6

iTrader: (1)

Odd. its hit or miss. What region of the country was the car purchased? I wonder if it has anything to do with california and east coast emissions standards.

Bones SS

To be safe, I'll assume I have a 195 and use the settings Dynocar suggested until I can verify the actual temp. So does F1 204/197 and F2 206/198 sound good?

SmokingWS6

iTrader: (1)

Do your have hpt or efi live? Either activate both your fans at idle or cruise down the freeway and see what temp your reading. Usually it'll be about 8 to 15* hotter than the actual Tstat. Set the fans accordingly.

For ex. if your cruising down the freeway in 50* weather and your current temp is 170* set the low fans to come on at 175* ect.

Bones SS

I have Hp Tuners. I'll give that a try and see what I come up with. Thanks

Blacker

iTrader: (3)

That is actually pretty accurate. In 50* weather, my temperature reading is 173* and my thermostat is a Hypertech 160*.

dynocar

We are tuning a twin turbo 01 Vette right now and it must have a 195 deg thermostat, here is why I say that. When I set the F1 and F2 to turn off at less then 194, the fans turned on but never turned off and the coolant temp would not go below 194. So I turned each fan off slightly above 195, and they work fine now, seen this many times. These 195+ thermostats are for emissions purposes.