i have a 95 sti and the fans dont kick in when red hot, ive changed the coolant temp sensor, checked the front loom where the fans connect to and connected the green test plugs under he steering column, this goes though a few checks and the fans came on then.
i cant think of anything else to look for so is there a way to trick them to come on or fit a switch in some where?
thanks, phil

 

Thermostat issue?

Tony

 

hi tony,
the thermostat seems ok as the engine gets hot first then the radiator gets hot, when the temp gets to around 105 110 degrees (which should make the fans come on) the overflow start to leak so i turn it off.

 

i would be more concerned about boiling the heads!! they are only ally

 

what temp should the fans come on at and whats safe to run it up to?

 

It is possible but I wouldnt recommend it mate. Just get it sorted properly

 

ive tried but i failed, ha ha, i cant think of what else to look at, anyone got any idea?

 

just fit a toggle switch then to put the fans on wen u want done it with a few of my old cars its **** easy

 

fitting a overide switch is pretty easy, just use the correct rating relay and wire, but as stated above there does appear to be something wrong so fitting a switch should only be considered a temp measure till you get to the bottom of why the fans not kicking in.

 

i will fit a switch for now and continue to find out why they have stopped by quizing all of you, what is the temp when the fans come on, on your cars?