ItalianJoe1

t-stat housing is a simple fix compared to the radiator, it's just a hose connection, and a large o-ring base gasket. They do leak from time to time though.

TenZero

You may have a secondary leak at the thermostat housing, but based on your pics, where the leak is definitely on the driver's side, I would say fix the rad first. When I first put mine back together, I also had a leak at the thermostat housing as well. It was just a misaligned oring, and runs fine now, after FD realignment.


Good luck!

Tusc

Does anyone have a part number for the hose going from the thermostat housing down to the block?

Need to replace that too. While the radiator had a minor Crack on the upper hose connection it was not leaking, only caught in time. But the main culprit is the down hose from the thermostat. It presented in odd drip locations due to the lower engine covers under the car and the angle the car sat at.

Tusc

Any info on that tube?

I came home tonight and searched it, but can't find any parts diagrams which include it or a relevant part number.

Is it a generic tube I can buy / cut to fit?

DrDoe

Tusc

Thanks for that. Everywhere I looked, all I saw were diagrams which excluded the hose. I'll have this one for Friday and be able to wrap up the car for the weekend.

Tusc

Finally back at the coolant issue. Been sidelined by work and a blood pressure issue (probably both combining against me!)

I pulled the thermostat to replace the down tube. As I'm in there I see a vacuum line which crosses behind the thermostat between driver and passenger heads. The line itself and also the rubber where it connects at least on the driver side is cracked. There is definitely no vacuum for that line. Anyone know a part number to make it easy?

If it were just the line, I'd splice it. Since the rubber end is gone I think I'll replace the whole piece.

ItalianJoe1

All that hard white plastic line is the same as airmatic line. Rubber hose is just generic vacuum line.

Tusc

Any identification on what that line services? It was a black shroud which could slide over the whitish yellow inner tube. The inner tube is not continuous. I tried a jury rig by sealing the outer cover and then also the rubber section. So far, so good. But I want to go back at some point and fix it right.

ItalianJoe1

The lines crossing over the front go to either the SAI system or the turbo bypass valves.

If one of the lines is falling apart, they all are. I ended up replacing the entire boost control system hard plastic lines because they were all super brittle and kept breaking as I tried to remove the next section. My SAI is disabled so I haven't worried about those ones.