Fan constantly running...Why

[smartfart]

For the first time ever, a fan at the front of my 52 plate, 450 passion will not shut off.

This evening on arriving home, a fan at the front continued to run after turning off the ingn key. Still running after 2 hours with the car parked up and engine off... It is not the heater blower. I had been running the A/C. Question, Does the 450 have a fan behind the Evaporator ? Is it controlled by a sensor. Obviously, disconnecting the battery stops it, but reconnecting restarts the fan. So over night i've left the battery disconnected.
Any advice is welcome please.
Thanks

[nikb]

Re: Fan constantly running...Why

fan relay stuck on, normally arc'd and stuck in the on position, replace the relay, job done

[smartsparky]

Re: Fan constantly running...Why

^^^ what he said.

[smartfart]

Re: Fan constantly running...Why

Thanks Nikb and Smartsparky. I'll have a look later. Am I right in thinking the relay is inside the Sam / zee ? I dont want to go pulling things apart blindly and creating problems.

[smartsparky]

Re: Fan constantly running...Why

As your car is a 599cc, it will have a fusebox and Zee. The relays simply plug in to the fuse box.

http://www.fq101.co.uk/how-to-guides/fortwo-450/electrical/244-599-relays.html

I'm not sure which one it will be without double checking the wiring diagrams. Try removing either D or G and see if that turns off the fan Failing that, try each of the others!

[smartfart]

Re: Fan constantly running...Why

G I think. Removed G and fan stopped. Refitted it and so far its ok. If the same thing happens again, ill buy a new one.

Thanks for all the advice..

[smartsparky]

Re: Fan constantly running...Why

Do you have front fog lights? If not, you could swap relays A and G in the interrim.

[nikb]

Re: Fan constantly running...Why

tut tut tut. dont you remember all the cars i have at my place????? plenty of relays here, you can have a couple you need only ask

[smartfart]

Re: Fan constantly running...Why

Well blow me down. Since I saw you last, you've changed your screen name. I didn't realize who was giving the advice. Did you finish building your super car ? I'd love to see it sometime.
Have you moved house ?

John

Johns Photo gallery

http://www.panoramio.com/user/3554851

The weather forecast as it happens live from Court Farm, Twigworth. Gloucester UK..(Subject to my PC being online)

http://www.wunderground.com/cgi-bin/findweather/getForecast?query=51.902%2C-2.216&sp=IGLOUCES33&MR=1

[kkEspana]

~~~~~~~~~

responses very good! )

[nikb]

Re: Fan constantly running...Why

hi.car wasfinished in august. my pocket rocket.still at same house,if you need a relay give me a shout