[padgett]

Was in traffic yesterday, mid-70s & windows open. Saw 215+ F at stoplight. Is too hot but factory does not turn fan on yet.

Anyone know of an aftermarket device that can turn fan on earlier, say 197F. Personally get bothered by temps over 200F.

ps at 215F the guage had not yet reached 1/2.

 

[padgett]

It is to laugh. The factory thermostat is a 195 so what is wrong with wanting to keep it under 200 ? I know the factory does not turn fans on until later but do you think that any company that would come up with a "switch pitch" oil pump might keep the cooling fans off just to save load ?

Personally I have been running computer cars in Florida with 180F thermostats and fans (dual) reprogrammed to come on at 185 for over two decades. Only outside effect I have seen is the a/c cools better and I conssitantly get better MPG than the EPA estimates. Oh and I cannot remember losing a fan belt or radiator hose.

Is another reason: I suspect that heat is a factor in the Pentastar head issue. I do have a lifetime warrenty (says to 2099) so is more of I have just found that running an engine about 10% cooler than the factory settings result in much longer life of everything under the hood (particularly rubber items).

Another factor is that the temperature on a thremostat is just where it begins to open. While a fast thermostat like a Stant Superstat (plug) opens in 3-5 degrees, a typical OEM thermostat takes more like 10-12 degrees to fully open so a 180 will open fully around 192.

OK question one: anyone know of a 180F thermostat for a Pentastar (and the four piece design makes it more difficult than a standard 44mm thermostat) ?

Question two: does anyone know of a seperate device that could attach to the upper radiator hose and turn the fan on when coolant is flowing and stopped at a light or in slow traffic ? (I may just install a toggle switch).

ps running an a/c compressor puts a load on an engine (once saw 10hp for an A6) which makes it generate more heat that must go somewhere. I suspect the main reason the fan comes on with the a/c is that you would not get any cooling at a stop light without. Turning the heater on full add a second small radiator with its own fan so can help an overtemp if not caused by low coolant.