1.9tdi thermostat removal technique

[HelenB]

Hi guys,
Sorry I know this has been covered a lot but can someone who has changed the thermostat on an AVB 100 1.9tdi please tell me : can I just remove the small black plastic housing (two nuts) to replace the thermostat or do I need to remove the whole metal housing? I'm guessing if it's only the black plastic section to remove, all I need is a thermostat and one rubber o ring. I'd rather not disturb the whole metal housing if I can help it as that has more hoses attached and another rubber seal to disturb.

This is the type of housing I have with plastic piece and metal piece :

https://www.ebay.co.uk/itm/AUDI-A4-...340c626fbb:g:wMgAAOSw7ytc~PUj&redirect=mobile

 

[stevey83]

Just the black bit, if it hasnt been changed before though, dont be suprised if the plastic has gone brittle and breaks when you try to remove it.

 

[HelenB]

On that's great news. Thought there was maybe a clearance issue or something to get thermostat out and back in if just removing black housing. Couldn't find a guide for this engine. I can always order a black piece if it breaks, I've seen them sold seperately.
Thanks!

 

[HelenB]

Well I've removed the black housing and...it's empty! Does this mean someone has removed the thermostat at some point, or am I looking in the wrong place? I'm awaiting delivery of my new thermostat.

 

[HelenB]

Sorted, I found the thermostat near the alternator..d'oh! It's because places selling the other flange/housing called it the thermostat housing and it's not. No harm done.