rabmc

As above was out in car last night a 2wd sierra cosworth drove around as normal everything fine , sitting in a bit of traffic and temp went up a bit as normal

Anyways stopped car and proceeded to let my fans come on , wich they had done night before , they usually come on about O in the guage of NORM , but instead it went up to near N so turned car off and let it coold down , then drove home ( temp came right down once on the move again) thank god So i was thinking the day before and during the time i was out n car it was raining really heavy and wondered if something could have shorted or something , as i have a "dodgy relay with wires coming in and out of it sitting under bonnet vent

Anyways to this relay which i have stripped and inspected and have drawn a diagram to see if any of yous could help , now is there anyway i could test this relay ? ot test for something else ( ive not got a clue)

On the diagram peeps the square thing is not a house and the litle stars* and black writing just means it connects to relay Whats this relay for and more to the point what u think problem is any help most apreciated

rabmc

Cant seem to get my picture bigger through my photobucket Ahh the joys the joys

rabmc

Jim Galbally

easiest way to check it...

bridge terminals on fn switch plug, if fans work... dodgy fan switch

then give live + earth to fans themself... if fans work its the relay / fuse / wiring

RS500/364

3 door saff or what
it maybe be a home job to take out the standard crap one that always goes faulty on 3door
put a twin pole switch in so you can have on all the time the engine on OVERRIDE or though the relay
you pic WELL SAY NO MORE !!!

Chipperx2

Just make a manuel switch and attach it to the dash and then you can choose when to turn it on

rabmc

Thats my next step troops a manuel fan switch , but i need it and want it to come on as normal obviously , will go out and try and sort it just now

rabmc

Right lads been out there and still no fans could anyone answer some questions for me

1 . My fans are ok when power applied the come on thats something
2 . The incoming cable which goes to fan temp switch is positive when ignition is on , hence when my fans used to come on the would go off when ignition was switched off So in theory if i apply a earth/neg to this cable will it / should it operate my fans
3 . How does this temp switch tell my fans to come on
4 .What and why is this relay fitted

see my great drawing at top of page to roughly see what i talking about guys ... oh and if i install a switch can i just switch power to my fans through a switch alone what current does it draw

sorry for these dumb questions , but i have not got a clue as u probably know any help most appreciated , to a man who misses his fans