Please help rad fan not turning off while car is running?????

Fan shit it's self wiring burnt

Replaced fan( aftermarket ) wired up fan with new thermo sensor (factory) twin relays soon as I turn the key on fans start up and run all the time while ing is on tried every possible wire combination

To no avail any suggestions ???

Did you remove/unplug the aircon from the car at any point? This causes the fan to come on constantly.

 

AE92 thermo fan switches are a normally-closed switch, check the new switch you installed with a multimeter to make sure it is actually a normally-closed switch or to make sure that it's not faulty.

Any break in the thermo fan switch circuit will cause the thermo fan to come on, you just need to find where the circuit is broken.

Edited February 13, 201313 yr by rian

I have replaced the wiring completely not using factory wiring at all would that matter ???

I have replaced the wiring completely not using factory wiring at all would that matter ???

 

You probably wired the circuit the wrong way around, you'll probably find the thermo fan will turn off when the car gets to the temp where the thermo fan would normally turn on. But I'm not sure, it's hard to say without seeing it. Make sure you have used the correct pins on the relays. Can you draw a wiring diagram of how you wired it?

 

Here's is what you need:

 

http://www.toymods.org.au/forums/tech-conversions/95-guide-how-wire-up-thermofans.html

I've tried the wiring diagram in that link that was the first one I tried and quite a few other versions

I've got a normally open thermo switch i will see how that goes

Problem fixed used a normally open thermo fan switch

Works well , thanks for your help and advice guys