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Fan on when off

Posted: Sun Oct 10, 2010 2:10 pm
by marmite
Last 2 days fan has been running after it has been switched off

Temp Gauge on 90

Just checked VAGCOM no faults coming up

Coolant temp going up to 107 degrees but gauge showing 90

Think I will try a coolant temp sensor first and let you know

fingers crossed the thermostate is OK, heater working all OK and gauge stays on 90 the whole time

RE: Fan on when off

Posted: Sun Oct 10, 2010 2:41 pm
by Coxall8395
Yeah sounds like a termo/time type switch

RE: Fan on when off

Posted: Sun Oct 10, 2010 2:51 pm
by Shoppinit
More likely to be the thermostat, I fear. 107 is quite hot for the coolant. Still, doesn't hurt to change the sender first. Will at least eliminate it.

Re: Fan on when off

Posted: Sun Oct 10, 2010 6:11 pm
by pete2144
I changed the coolant temp sensor first , but it turned out to be the thermostat.

RE: Re: Fan on when off

Posted: Sun Oct 10, 2010 7:41 pm
by marmite
Apart from the 107 degrees no signs of overheating or anything else, needle smack bang in the middle.
Heater works coolant level spot on everything feels warm under the bonnet

I'll try the coolant temp sender tomorrow and see if that changes
Also run VAGCOM on my drive in and see what the temp reads

Measure value blocks Read the same in the cluster

Fingers crossed it's not the thermo, will have to ring Warranty Direct again

RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 4:06 pm
by Fizmo100
I'm curious about this - could you clarify what you mean by the fan running when it's off? If you mean you turn off the engine and remove the key and the fan still keeps running, mine does this as well... I thought it was normal, but once more I am beginning to feel the trousers turning brown...

RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 6:00 pm
by philroach
the fan will run on until the engine is cooled down , regardless of key in ignition

Re: RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 6:08 pm
by RS6Steve
philroach wrote:the fan will run on until the engine is cooled down , regardless of key in ignition
I have never noticed mine run on! What should I be checking? Everything run fine, temp normal

RE: Re: RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 6:12 pm
by iR8V10
Lol, brown trousers if it does run and brown trousers if it doesn't in the same thread!

Were a funny bunch of paranoid petrolheads!

RE: Re: RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 6:13 pm
by philroach
you need to drive it harder :thumb:

RE: Re: RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 6:18 pm
by RS6Steve
I'll be the warm down I do about 1 mile from home.... Boring I know....

Posted: Mon Oct 11, 2010 6:20 pm
by goldblum
You switch off,get out and lock.As you walk away you can hear the fan still

running.This is supposed to happen and is normal.Fan should go off within a

short time.If the fan takes more than a couple of minutes to switch off then

you might have problems,normally thermostat related.Check under the

bonnet,overheating coolant etc.

Posted: Mon Oct 11, 2010 7:29 pm
by Fizmo100
Cool - it goes off after a few minutes, just like every other car I've had, so thought it was ok. Never hurts to double check though... I'll call the launderette and tell them it's safe to return my pants now.

Re: Fan on when off

Posted: Mon Oct 11, 2010 7:36 pm
by goldblum
marmite wrote:Last 2 days fan has been running after it has been switched off

Temp Gauge on 90

Just checked VAGCOM no faults coming up

Coolant temp going up to 107 degrees but gauge showing 90

Think I will try a coolant temp sensor first and let you know

fingers crossed the thermostate is OK, heater working all OK and gauge stays on 90 the whole time
Hope I'm wrong but very likely to be thermostat.

Re: RE: Re: RE: Re: Fan on when off

Posted: Mon Oct 11, 2010 9:44 pm
by marmite
RS6_Dave wrote:Were a funny bunch of paranoid petrolheads!

The fan seemed to be on full stage after a short journey
Did it Thurs, Fri and over the weekend and then this morning

Got home tonight and nothing

Just never noticed the fan so loud when I get out the car, new fan been fitted July

Thermostate done 3 weeks ago with Cambelt

Going to monitor, but was driving me mad