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NewbieWithA90

Member

• Mar 26, 2024

• #1

I'm not getting any overheating problems but I notice that whenever I'm parked up (engine not running) my fan is really tight. You can just about turn it with two hands and a good bit of effort. However when the engine is running it spins properly.

Just wondered whether this is a normal thing? It's a 19j. Everything looks fine / no belts too tight etc.
Many thanks, Simon.

 

tottot

Well-Known Member

• Mar 26, 2024

• #2

If engine is fitted with original type fan on the water pump pully then that would be normal.
How it works.
When engine cold the fan is free to spin on its shaft with only a little resistance, it will be turning with engine running but not at full speed.
When the engine warms up the wax unit behind the fan firms up and the fan is then driven at engine speed pulling more cooling air through the radiator

 

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lynall

Well-Known Member

Full Member

• Mar 26, 2024

• #3

Engine cold and ticking over for a minute or two, then get a rolled up newspaper and try and stop the fan spinning, if it eats your mewspaper the fan is dead.
Watch your bloody fingers!

 

dag019

Well-Known Member

• Mar 26, 2024

• #4

lynall said:

Engine cold and ticking over for a minute or two, then get a rolled up newspaper and try and stop the fan spinning, if it eats your mewspaper the fan is dead.
Watch your bloody fingers!

Click to expand...

your being far to safe and sensible there with your newspaper! The last one I did you just gently touch the outer edge of the fan blade with a finger to slow it down (or not if broken). what you do not do it stick fingers into the spinning fan, that would be a newpaper job!

 

D1Nut

Well-Known Member

• Mar 26, 2024

• #5

Are the mechanism's of the fan serviceable at all ?

 

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lynall

Well-Known Member

Full Member

• Mar 26, 2024

• #6

D1Nut said:

Are the mechanism's of the fan serviceable at all ?

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In the UK people just replace faulty viscous fan hub, but never having stripped one down I have no idea if they could be repaired?
I think they are circa 40 GBP per hub.

 

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lynall

Well-Known Member

Full Member

• Mar 26, 2024

• #7

dag019 said:

your being far to safe and sensible there with your newspaper! The last one I did you just gently touch the outer edge of the fan blade with a finger to slow it down (or not if broken). what you do not do it stick fingers into the spinning fan, that would be a newpaper job!

Click to expand...

TBH that is pretty much what I do, but to suggest to others to do so might not be a good idea!