St3V3_C

Take the wires that go into the rad switch and join them together. If the fans work, its the switch or your radiator is blocked.

If they don't work, then the fault is somewhere else.

Rene

WEll last week my fans didnt cut in as they should gladly i was already @ home when it happend and i had a SECS to see the temp was getting a tad to high!

What should i check?

checked so far:

Fans are working directly (as they are now on a switch) ive checked the fuse and relay in the fusebox and they seem to be fine
switched the relay just in case with another but no luck.

Will it be the sensor in the rad then? ive checked it but not that good as i was a bit in a hurry .. how will i be able to check if its that one?

thanks people

Rene

will try that steve! thanks!

Anonymous

Fusebox and relay usually burnt out on a cossie if they don't work

CraigN

my fans work if i join the wires

but they dont work on my new fan switch would this indicate that the rad is blocked down by the switch ?

Anonymous

Yes it could do, could also be other issues, u checked the thermostat ?

CraigN

no i havent

on my fiesta when the stat opened i coudl see my temp guage drop 15 degrees or so i dont see this on my cossie

but it doesnt overheat in this cool weather cruising its running at 70-75 degree

Anonymous

your fans won't come in at 75 degree's tho.

CraigN

i have let it get upto 105 degrees on my gauge and still the fans did not cut in,

i know the water will be hotter in the head but on my lats cossie it cut in a lot earlier

i have a burton power 92 degree fan switch

atm i have a switch in the car that links the 2 fan switch wires and this works fine

CossieRich

iTrader: (1)

wot temp are the fans supposed to kick in on a 2wd saff?

Rene

mine usually kicks in on about 94 degrees

Anonymous

Mine switch is from a 4x4 saff.

Comes in @ 86, goes off at 77 - on the pectel and the defi as sensor is in approx same place, no idea what the temp is on the rad tho.

AlexD

iTrader: (3)

I would say the Fan switch in the Radiator tbh, But also when my temp sender
packed up, the gauge would go into the cold when it was gettin hot !!

AL...

Rene

might just replace it anyway you never know anyway

TIFF

Rene

I had the same problem and saved all the fucking around i just replaced the whole lot

Here is the diagram i used and now they work fine

Took about 2 hours, so if i can do it anyone can

CraigN

i dont use std temp guage have my after market badboy

atm i have my fan switch all wired up but i have a switch wired in to over ride should it not cut in

am looking to get an alloy rad anyways so will see if it works then

might look at changing the stat anyways

CraigN

tiff thats what i use

but fans dont cut in on the thermo switch just my manual switch

TIFF

Craig

Double check it over mate, As mine cut in and out fine

CossieRich

iTrader: (1)

Can you get something that allows them to kick in at a lower temp?

CraigN

thas why i think my rad maybe blocked as it all works apart from the fan switch and i have tried 2 new ones

when i replaced it tho water came out

is there a +ve and -ve on a fan switch ? or does it not matter whch way round the wires go

my new fan switch has spade connectors on so had to cut the multiplug off

CraigN

rich ring burton power they do a 88 degree fan switch

CossieRich

iTrader: (1)

cheers craig.

Rene

thanks tiff will do

Matt

mine needed sorting as only one worked so i just drove to dingys and forced him in the engine bay, et voila, new wiring to a dash switch override

Rene

yeah well dingy is a bit far away from me now LOL