I just fitted the Autodynamix fan loom and fan switch (green) and now my fan kicks in already when the needle hits the upper part of the M in the dial (1/4), which I think it's too early. Pushing the car it barely reaches the middle of the R (1/2) and then comes down to the M again, but the fan stays on all of the time. It doesn't even switch off in the highway, temp always in the M but fan on.

Do I need a different switch? What is the usual range of the dial the temps should move around when fan kicks in and out?

 

Bump

Anyone can tell me the temp ranges for the standard Ford fan switch? I could not find a clear answer after searching around ...

 

I'm leaving this info here in case someone in the future is interested in the same. It was quite tough to dig around until finding it ...

Apparently the orange standard Ford fan switch is 97-102ş C or even 98ş-103ş in some versions, so the fans will come on when you hit 102/103ş and turn off when it's down to 97/98ş again. This roughly relates to 3/4 gauge range when they kick in, and around 1/2 when they shut down.

You can find a 95ş-100ş (Usually brown) switch and a 88ş-95ş (Usually green) one if you prefer, but you have to search for a CVH one, not specifically Fiesta Turbo, or you will only get hotter ones. The 88-95 is probably only of interest if you have an 82ş thermostat and want the car to run colder.

Ideal CVH running temp is about 90-95ş, so the standard switch is kicking in only when it's really much hotter than that, and barely brings it down to the maximum ideal temperature. It is therefore a bit of an "emergency" setup, meant more to prevent the engine from cooking and not so much for keeping it at ideal running temp.

 

that is a bit of handy info there

 

Cheers

I'm compiling as much info as I can, will probably at some point open a blog to share and keep it organized, even if just for my own future reference.