Cooling fan constantly on!

[Skills 0]

Just got back from a drive and on the way back the cooling fan has been on constantly. This is happening even when the ignition is on without the engine. The car isn't overheating as it occured straight away before setting off. Any ideas?

 

It's a VR6 by the way.

[Riley 0]

im not too up on the vr6's wiring side of things :oops:

 

do they have a fan over run switch? probably somewhere above the inlet manifold...worth checking the wiring to this if it has one. :)

 

Neil.

[Skills 0]

Cheers, i'll have a bit of a poke round during my lunch break tomorrow. Just needed a bit of an idea of what to look out for.

 

Tom.

[Riley 0]

no probs m8 :)

 

just had a look about,and i cant find any mention of an over run switch... :(

 

maybe just physically check out the wiring to the rad fan,and to the relays(which i think they use?)

 

also,you could test the fan switch in the rad if you have a continuity tester?

 

Neil.

[bigbluec 0]

Hi,

Not sure if it's the same on the Vr but my Valver was doing this last year should be a thread somewhere on it?

But it was being caused by a sensor located on the top left corner of the rocker cover coming loose and grounding itself against the block.

Not sure what the sensor is called but it was cyclindrical and about the size of a chubby thumb! (from tip to knuckle) technical i know :wink: but i'm sure someone with a bit more technical jargon knowledge can tell you!

Will

[Skills 0]

Had a tinker myself but nothing worked. Took it to the local VW specialist this morning. Replaced the 'fan switch' and it's working fine now. £14.99 for the part so not too bad.

 

Cheers for the suggestions.