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[pcd]

Hi everyone winter on its way and my 1996 2.5 tdi was not the warmest place to be last winter,so i have orderd new thermostat coz she seems to take ages to get hot,tem gauge never get close to 90,SO WANTED TO CHANGE THERMOSTAT.so before i do i had a quick look,if thats it just under the cam cover where the vacume pipe enters, it looks like a b_ _ _ _ _ d of a job! any advice,have tried the hold the top hose but got fed up after 30 mins,it was warm and the fan had cut in.

[Welung666]

Not that hard to change. Just follow the top large radiator hose back to the engine and it's in the casting there

[TheBoy]

Dead easy, 15mins if you've been sensible enough to remove the viscous fan and ram it right up the stupid BMW designer's backside. Sideways. Whilst spinning.


As Welung666 says, follow bottom rad hose up, it sits in that plastic 90 degree elbow.

Use it as a good excuse to flush the cooling system - drain on rad and an engine drain just behind the turbo

[pcd]

Cheers,but welung666 says follow large TOP hose and Theboy says follow the BOTTOM hose,which is it?any piccies to make it clear,anyone?

[Welung666]

Cheers,but welung666 says follow large TOP hose and Theboy says follow the BOTTOM hose,which is it?any piccies to make it clear,anyone?

We aim to confuse

My error, sorry  I was working from memory so I've checked. The housing is mounted on the front of the engine behind and just above the fan, so that would be the bottom hose

[Welung666]

Number 2 is the thermostat housing. Ignore the radiator layout as it's a range rover one

[RexNoctis]

Dead easy, 15mins if you've been sensible enough to remove the viscous fan and ram it right up the stupid BMW designer's backside. Sideways. Whilst spinning.

I've spent most if the morning fighting the viscous fan coupling! Nothing like the right tool for the job:



Having finally got the fan off, it's not going to be a dead easy job for me, I lack either the tools or skill to sort this out easily! 

Is there anyone in the Midlands area who fancies earning a few beer tokens, I can come to you!?

[RexNoctis]

Sorry, I should point out now I've hijacked this thread that mine is a 2.5TD, not a TDI like the thread title says. I don't know how much of a difference there is? :-?

[hoofing it]

Sorry, I should point out now I've hijacked this thread that mine is a 2.5TD, not a TDI like the thread title says. I don't know how much of a difference there is? :-?

the tdi was never used in britain the only difference is its 24valve not 12

[Kneepad]

Assuming it's the same layout as the 2.5TD then you don't need to remove the viscous fan.
What you need to remove is the air filter housing, once that's out of the way everything is accessible from the drivers side of the engine.   

[RexNoctis]

That may be easier, fan has gone now anyway 

[Elite Pete]

I hope someone pointed out its a left hand thread

[RexNoctis]

Yup, fortunately! Otherwise I'd probably still be there bashing it!

The daft thing is, it was removed about 6 weeks ago to replace the belts. I was going to leave it off but my helpful helper helpfully reinstalled it while I was making a cuppa.  I love the way the thermostat waits until everything is put back together before giving up.

[Elite Pete]

Yup, fortunately! Otherwise I'd probably still be there bashing it!

The daft thing is, it was removed about 6 weeks ago to replace the belts. I was going to leave it off but my helpful helper helpfully reinstalled it while I was making a cuppa.  I love the way the thermostat waits until everything is put back together before giving up.

Ah, the law of sod, you'll come across it quite a bit owning an Omega 

[TheBoy]

Once the fan is off:

Drain coolant (drain plug on rad, and one in block just aft of turbo)
Remove bottom rad hose
Remove 3 10mm bolts holding stat housing to block
Stat housing pulls away from block

Refit in reverse order

Refill antifreeze with 50:50 mix - system is mostly self bleeding, so let it idle for 20mins or so, but take a can of 50:50 mix out with you on your first journey as a precaution