Fans??

Talk about the 406's electrical system, what wires do what, how to add extra functionality, etc.

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Bailes1992
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Fans??

Post by Bailes1992 »

Just drove for no more than 5 mins and less than a mile and my engine didn't even touch 70 degreess. When I got home the fans were on after I switched the igniton off and 5 mins later they are still on. I've restartedd the engine and unplugged the sensor a few times to no avail. Surley they shouldnt come on?
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DiscoPol
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Re: Fans??

Post by DiscoPol »

you might be lucky enough to have working A/C and I have heard from far too many friends back in the UK that its a bit warm there right now, maybe its something to do with this??
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Re: Fans??

Post by steve_earwig »

Fans running full tilt with the sensor unplugged is normal, perhaps the sensor's gone up the swannie.
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Bailes1992
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Re: Fans??

Post by Bailes1992 »

Fans havent gone off at all; pulled the fuse out and dropped it off at my mechanics :(
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mjb
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Re: Fans??

Post by mjb »

As Steve says, it's most likely the case that your car has multiple coolant temperature sensors (the V6 has three - one for the ECU, dash gauge and dash gauge overheating light!) and your ECU one has gone south. About £30 from the dealers or £20 from ECP/GSF if they have one. You'll also be looking at a coolant top-up and bleed...

Another cause could be a stuck relay, but that shouldn't happen at full speed unless the car's had reason to engage full pelt mode, so it's unlikely
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Bailes1992
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Re: Fans??

Post by Bailes1992 »

It was just fan 1 that was on as I found out. I think the brown sensor is the ECU one iirc :cry:
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Re: Fans??

Post by steve_earwig »

Just the one? Damn, where's my Haynes? I can't remember which way round it is but mjb could be there with the stuck relay.
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Re: Fans??

Post by mjb »

Just the one then I'd definitely say stuck relay if you know the other fan works
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Bailes1992
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Re: Fans??

Post by Bailes1992 »

Right both fans seem to come under the fan 1 fuse? There both on all the time.
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Bailes1992
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Re: Fans??

Post by Bailes1992 »

I've taken the car for a drive with the fuses out and it seems to have sorted it out?
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