Radiator Fan Running On

[bushm]

Hi,

My Gal has developed another problem(?)

Even on a short run of 1-2 miles on a cold morning the radiator fan has started to keep running when the ignition is switched off, we can hear it running as we leave the car. It never used to do this.

Any ideas what the problem is and how to fix it?

Thanks.

Max

[gregers]

hi bushm,i dont know what version you own,but are you sure its not the after run pump your hearing????

[naim32]

Mine was doing this also and would run on until the battery was flat.

 

The cause was the relay block that control the fans, one of them was sticking.

 

On the mk2 this is the box under the main fuses in the engine bay near the battery. It has cylindrical connectors going into it with heavy duty cables.

 

The box switches the fans on either in parrallel with 12V across each (full power) or in series with 6V (low power). In either case both fans should be on.

If only one fan is running as with mine then it's probably a sticking relay in this box. I just opened up the box and cleaned up the relay contacts and have had no problems since.

[bushm]

mines a mk I TDi and it is the fan (I watched it spinning and stop).

Thanks naim32 for the advice if I can't do this myself before it goes into the local Ford dealer (already booked in) at least I can suggest they check this first rather than go in like a sheep to the slaughter.

Thanks for again for the advice.

[Scorpiorefugee]

Mine did this from the first day I got it.

 

My problem was the temperature sender - its a double unit and the bit that feeds the temp gauge was OK but the bit that is used for engine management was permanently indicating over heating.

 

A quick indicator is the glow plug light. if it always goes out after 1 second, even on cold mornings, there's your answer.

 

If you can find it, disconnect it and your problem goes away. be careful for brittle wires that break.

 

Good luck. If I don't follow up on this it's because Idon't gen on here often but have a butches throug some of my posts from a year or so ago.