now then fella's, had some probs with the fiesta today, hoping someone knows where i need to be looking next.....

cooling fan not kicking in, fan works fine off the battery, signal coming from thermostat, and fuses are all ok, is there a relay that i should be looking for????

hope you guys can help

cheeRS

 

Fan control relay will be located in the fuse box and the earth for which will be switched by the fan switch. Have you bridged the fan switch? Or is that what you mean by signal coming from the thermostat???

 

i have had the mulimeter on the switch thats attached to thermostat housing, there is power coming through, but the fan doesn't kick in, will check out the relays tomorrow

sure i read somewhere on here about relays burnin out on them, but can't find it anywhere??

cheeRS

 

If I remember correctly the fan switch will be located in the radiator and the switch you are looking at is the temp sender, I need to look at one to remind myself.

 

pretty sure there is no fan switch in the rad, as i replaced the rad for a alloy jobby, hmmm, anyone else had probs with the fan on FRST???

cheeRS

 

I can only speak for Cosworths as they have rad switches but on MK2 fiesta know they have stat switches as well as Sierras, would imagine FRST would be similar. If it's anything like the Cosworth the loom is useless and relays are known to melting amongst other problems as has been mentioned.

Have you got the car hot so the fans to the point where the switch closes, then tried performing a continutity test on the switch? Also at this temp you should get 12V out of the relay side and earth?

Would imagine will be switch or relay.

Kind regards,

Martin.

 

i have replaced the switch recently, so would imagine its not that, no idea where to even look for the relays...........???

 

Haynes manual or oe ford handbook will tell you if it has a relay for fans.
tabetha

 

relay is on top of fuse box. undo the 2 or 3 screws you can see when u take the fuse panel off then you can drop the fuse box down to get at the top. iirc the relay is a metal cased silver one. common for the connectors to melt in the fuse box itself.
fan switch is mounted on the thermostat housing