• Sign Up! To view all forums and unlock additional cool features

    Welcome to the #1 Fiesta ST Forum and Fiesta ST community dedicated to Fiesta ST owners and enthusiasts. Register for an account, it's free and it's easy, so don't hesitate to join the Fiesta ST Forum today!


What's the highest temp you've seen on the gauge cluster?

OP
WolfDampf
Messages
126
Likes
59
Location
Houston, TX
Thread Starter #6
My weather app said 98° at the time. The car got a mountune radiator so coolant temp never went above 190° with the AC on. With AC off it hits 235°. Of course charge temps were high so I waited for that to cool before stepping on it again once I reached the open road
 


M-Sport fan

9000 Post Club
Messages
14,588
Likes
7,108
Location
Princeton, N.J.
#7
My weather app said 98° at the time. The car got a mountune radiator so coolant temp never went above 190° with the AC on. With AC off it hits 235°. Of course charge temps were high so I waited for that to cool before stepping on it again once I reached the open road
With the Mountune radiator installed, and the AC off, it still hits 235*F?!?!

Most on here claim their cars run hotter, factory radiator or not, with the AC on, but for me, just like you, that high speed fan kick on keeps the coolant temps down below ~200*F for me, on the factory radiator, regardless of how hot the ambient temps.

Granted, in the summer I change the coolant to water ratio to ~30/70, and add a cavitation preventative (Kool-It additive), but that is only going to help, marginally at best.

Turn the AC off, and it will steadily climb up to about 218*F max for me, currently.
 


OP
WolfDampf
Messages
126
Likes
59
Location
Houston, TX
Thread Starter #8
With the Mountune radiator installed, and the AC off, it still hits 235*F?!?!

Most on here claim their cars run hotter, factory radiator or not, with the AC on, but for me, just like you, that high speed fan kick on keeps the coolant temps down below ~200*F for me, on the factory radiator, regardless of how hot the ambient temps.

Granted, in the summer I change the coolant to water ratio to ~30/70, and add a cavitation preventative (Kool-It additive), but that is only going to help, marginally at best.

Turn the AC off, and it will steadily climb up to about 218*F max for me, currently.
Yessir it does indeed climb way higher than I would've thought it would with the mountune radiator. But so long as the ac is on its down below 190.
 




Top