General Technical Questions and Answers last answered over 1 year ago.
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Can anyone tell me the VW part number(s) for an early 1986 1.9DG Thermostat Housing (top and bottom and any gaskets).
Unfortunately the chap at my local VW parts department is a little careless when determining part numbers and I would really like to be able to go to him with the definitive numbers.
No, just the one van. I don't think the mayonaisey oil and the thermostat problem are connected.
The engine arrived with me without a 'stat. When I tried to take the cover off I found that it had a knacked bolt. Or more precisely, one of the nuts in the inside of the bottom part of the 'stat cover was stuck on the bolt. Consequently it came out with the bolt when the top cover was removed.
Now the 2 parts of the housing don't make a complete seal. I've tried using an instant gasket type thingy but that doesn't work. And I think that, as well as weeping from the housing very slightly, that it might be drawing in air (I've bled and bled and bled and more air keeps appearing). So, new 'stat housing required.
top part called "connecting socket" 025 121 114
thermostat housing; 025 121 115 A
thermostat; 025 121 113 F
round seal; N 901 368 02
sea;l N 902 781 01
retaining spring
temperature sensor; 032 121 142
ahhh, I read the first post as early DG (not early 1986 DG).
The DG engine (as u prob know) changed in 85/86. The early DGs have the thermo housing (in two parts) mounted on nearside of waterpump housing, with access to the thermo from underneath. The layout of hoses is also different. Water pumps are, needless to say, different too!
1.9 DG Bilbos 'Arragon' Hitop LPG'd by Gasure
1.9 TDi Golf Mk4 Estate
Member no 3288
I was just removing the thermostat housing and when I took off a fabric coated pipe, which leads from the bleed screw at the top to the white tube that runs around the top of the engine bay, I found that it was completely bunged up with what looked like a dark brown clay. This was totally solid and filled the pipe completely.
What the blithering heck is that brown clay sht doing there?