question on removing thermostat housing

[amblerman]

Hi Folks.

car: 99 s70 base.

I discovered that my coolant temp sensor insulation is damaged but the sensor still works find.
I want to remove it and apply some silicone or some heat shrink to deal with the damaged insulation.

My question is can I remove the thermostat housing without losing much coolant?
I've never removed the housing without draining radiator first.
If I lose a little, no big deal. If i'm going to lose 50% of the coolant out the top, I'd rather drain from bottom first.

-A

[bronco]

drain it less mess overall, the housing might not be as simple as you think . Mine the torx back bolt was stripped and removing the whole housing from the block means getting at the bottom bolt which is blocked by a few things

[amblerman]

drain it less mess overall, the housing might not be as simple as you think . Mine the torx back bolt was stripped and removing the whole housing from the block means getting at the bottom bolt which is blocked by a few things

That is true. However in my case, I put in a new thermostat in a couple of years ago. The torx bolts came out fine on mine and I used anti-sieze when putting them back in.

I do appreciate the warning though. They can be a giant pain.
-A

[Cookeh]

Save yourself major headaches and replace the sodding torx head bolts with intake manifold bolts. Same length, thread pitch, and diameter, same grade too...just hex headed. Part number inc whenever I remember to look at the blue bag in the shed.

[Cookeh]

Save yourself major headaches and replace the sodding torx head bolts with intake manifold bolts. Same length, thread pitch, and diameter, same grade too...just hex headed. Part number inc whenever I remember to look at the blue bag in the shed.

P/N: 982778