Viscous Fan's ????? - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
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post #1 of 17 (permalink) Old 09-05-05, 05:01 AM
andy
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Viscous Fan's ?????

Hi all,

The Viscous unit for my 90 2.5TD is knackered. Does anybody know if it
is possible to get these reconditioned, or where to buy reconditioned
units????

I have had some bad luck with second hand ones, and a new one is in the
region of £55.00.

Cheers,

Andy

 
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post #2 of 17 (permalink) Old 09-05-05, 06:01 AM
Badger
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Re: Viscous Fan's ?????


"andy" <andypseymour@gmail.com> wrote in message
news:1125917779.321248.318360@g44g2000cwa.googlegroups.com...
Hi all,

The Viscous unit for my 90 2.5TD is knackered. Does anybody know if it
is possible to get these reconditioned, or where to buy reconditioned
units????

I have had some bad luck with second hand ones, and a new one is in the
region of £55.00.


Sorry, I don't think they can be reconditioned. In all honesty, they are
very reliable bits of kit, I happily remove electric kits and fit viscous
fans back on, they keep the engine more stable, thermally, than any electric
does. Fit a new one, it'll probably outlast the engine and chassis.
Badger.


 
post #3 of 17 (permalink) Old 09-05-05, 07:02 AM
Jon
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Re: Viscous Fan's ?????

On Mon, 5 Sep 2005 11:37:53 +0000 (UTC), "Badger"
<brianhatton@btinternet.com> wrote:

>
>"andy" <andypseymour@gmail.com> wrote in message
>news:1125917779.321248.318360@g44g2000cwa.googlegroups.com...
>Hi all,
>
>The Viscous unit for my 90 2.5TD is knackered. Does anybody know if it
>is possible to get these reconditioned, or where to buy reconditioned
>units????
>
>I have had some bad luck with second hand ones, and a new one is in the
>region of £55.00.
>
>
>Sorry, I don't think they can be reconditioned. In all honesty, they are
>very reliable bits of kit, I happily remove electric kits and fit viscous
>fans back on, they keep the engine more stable, thermally, than any electric
>does. Fit a new one, it'll probably outlast the engine and chassis.
>Badger.
>

I agree with Badger, replace it with another.

That said, how do you know its broken? Is it in pieces or are you
assuming its broken because you can still spin it freely when the
engine is at running temp (In the UK this is normal behaviour as they
tend not to run hot enough to solidify (for the want of a better word)
the viscous fluid? When the engine is first started from cold it
should blow a gale over the engine and then 30s or a minute later you
should feel the air flow reduce. If it behaves like that when cold, I
believe it should be OK.

Jon

 
post #4 of 17 (permalink) Old 09-05-05, 07:02 AM
andy
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Re: Viscous Fan's ?????

i take it that its knackered, as when i start the engine from cold, or
the engine is at normal running temeperature, and idling or fast
running, i canot feel any air being pulled from the fan, and you can
see the fan spinning, but very slowly.

i have fitted the blades to an old seized viscouse i hapened to have
laying around, and i have "a gale" blowing over the engine.

Andy

 
post #5 of 17 (permalink) Old 09-05-05, 08:01 AM
Jon
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Re: Viscous Fan's ?????

Defo change for another then... Or save £60 and use the seized one as
a permenant fixture... I would. A permenent fan is much better than
no fan, any performance loss / reduction in mpg is bugger all and
should not be noticable.

Jon

On 5 Sep 2005 05:09:13 -0700, "andy" <andypseymour@gmail.com> wrote:

>i take it that its knackered, as when i start the engine from cold, or
>the engine is at normal running temeperature, and idling or fast
>running, i canot feel any air being pulled from the fan, and you can
>see the fan spinning, but very slowly.
>
>i have fitted the blades to an old seized viscouse i hapened to have
>laying around, and i have "a gale" blowing over the engine.
>
>Andy


 
post #6 of 17 (permalink) Old 09-05-05, 09:01 AM
andy
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Re: Viscous Fan's ?????

i would be happy to leave the seized one on long term, but it looks to
have a slight bend in the coupling, and viscous bit is all
damaged/dented. after the hastle i have had recently with the water
pump and other bits, i don't want to risk shagging the new pump i have
just fitted.

that said, i suppose £60 spent now on a new one, will be better than
knackering the new pump and having to replace and still need a fan??

Cheers anyhow.

Andy

 
post #7 of 17 (permalink) Old 09-05-05, 02:01 PM
Huw
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Re: Viscous Fan's ?????


"Jon" <nospam@nospam.com> wrote in message
news:6qhoh11nm2p6dicmc4prjtrgc468cst8hm@4ax.com...
> Defo change for another then... Or save £60 and use the seized one as
> a permenant fixture... I would. A permenent fan is much better than
> no fan, any performance loss / reduction in mpg is bugger all and
> should not be noticable.
>


A fixed fan could be using about 6hp at anything over 2500 erpm. A
disengaged viscous unit will only use about 1hp. That 5hp has to come from
fuel.

Huw


 
post #8 of 17 (permalink) Old 09-05-05, 02:01 PM
Huw
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Re: Viscous Fan's ?????


"andy" <andypseymour@gmail.com> wrote in message
news:1125922153.399261.159010@g49g2000cwa.googlegroups.com...
>i take it that its knackered, as when i start the engine from cold, or
> the engine is at normal running temeperature, and idling or fast
> running, i canot feel any air being pulled from the fan, and you can
> see the fan spinning, but very slowly.
>
> i have fitted the blades to an old seized viscouse i hapened to have
> laying around, and i have "a gale" blowing over the engine.
>
> Andy
>


Which sounds about right. The viscous fan should however engage fully in hot
weather, as we have had recently, if the engine has been working hard. It
could occasionally engage also during prolonged town use but it would likely
cycle itself more often.

It is surprising that viscous fans do not engage more often than they do in
general.

Huw


 
post #9 of 17 (permalink) Old 09-05-05, 02:01 PM
andy
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Re: Viscous Fan's ?????

i don't think i explained too well, the fan seem to not be pulling any
air through, what ever the temperature of the engine or amount of revs.

 
post #10 of 17 (permalink) Old 09-05-05, 03:01 PM
Huw
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Re: Viscous Fan's ?????


"andy" <andypseymour@gmail.com> wrote in message
news:1125948264.612222.235280@g47g2000cwa.googlegroups.com...
>i don't think i explained too well, the fan seem to not be pulling any
> air through, what ever the temperature of the engine or amount of revs.
>


If the instrument panel water temperature gauge does not venture above about
the 3/4 mark then what's the problem?
If it hits red or the water boils over, *then* you have a problem and not
really before.

Huw


 
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