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[Gilly]

The expansion tank has no cap.

[tjts1]

Originally Posted by Gilly

The expansion tank has no cap.

So how do you add coolant to your system?

[Gilly]

Originally Posted by tjts1

So how do you add coolant to your system?

By removing the pressure cap from the pressure tank. The expansion tank is inside the lower part of the right front fender, out of sight. It's where the hose leads to from the filler neck of the pressure tank.

You need the hose that connects the wp to the block, you won't typically find that at a local parts store, very important.

Also not sure what the silicone is for, you you mean silicone sealer or silicone spray? Sealer you could use to hold the o-ring in place.

Oh speaking of o-rings you need one of the gray ones for the end of the heater hose pipe where it enters the wp, they usually are hard and or cracked and need to be replaced since it's removed anyways.

You're replacing or assuming you need to replace a bunch of stuff i wouldn't bother with, although most of it is stuff I'd like to know I could get to right away in case I needed it. Especially what you call the expansion tank, which must be the pressure tank, I hardly ever replaced those. Why? The expansion tank I replaced in the case of blown head gaskets where there was a load of oily crap in there because it's about impossible to clean.

Gilly

[tjts1]

Originally Posted by Gilly

The expansion tank has no cap.

So how do you add coolant to your system?

Originally Posted by Gilly

By removing the pressure cap from the pressure tank. The expansion tank is inside the lower part of the right front fender, out of sight.

Your car must be completely different from everybody else.



To the OP
Let me know if you need the cooling system repair PDF. I can email it to you.

[ps2cho]

Originally Posted by tjts1

Your car must be completely different from everybody else.



To the OP
Let me know if you need the cooling system repair PDF. I can email it to you.

I think we are playing word games here...

There is a tank hidden behind the passenger fender. I don't know the name of it...but there is one. Is it where the black hose goes to at the top of the coolant reservoir. You can see the hose in the picture above. It circles around and down into the fender.

I think it is an overflow tank so if you put too much in, it won't blow the reservoir cap off.

[Gilly]

The hidden one is the expansion tank. If the pressure cap releases coolant, instead of going to the ground, it EXPANDS into the expansion tank. Later when the engine cools off, the excess coolant will get sucked back into the pressure tank, all through the hose connected to the filler neck. It works like many cars, specificaly like most US cars, except it is hidden. The pressure tank is an unusual system compared to most US cars. The pressure tank is connected directly to the engine cooling system. The level does change according to engine temp, but it's not an expansion tank. The expansion tank handles the overflow from the system.

You don't state when the coolant was last replaced, so of course you'd want to pick up some good coolant. I'd recommend either the MB stuff or Xerex G05. I'd also recommend getting some good water, the cheap stuff you see at the grocery store that['s either distilled or "drinking" water would be fine, better than what you'd get at the tap and cheaper (less additives like flouride in the store-bought drinking water, but check the label).
The silicone sealant will hold the o-ring in place on the waterpump while you install it, it is helpful for that. The new pump should come with the o-ring. And then as i mentioned the other o-ring is the one on the end of the steel heater pipe that connects to the side of the waterpump, the pipe that crosses in front of the upper timing cover.
On the pwer steering pump, if it's leaking I'd recommend picking up a reman pump. Pretty involved.
Gilly

[Gilly]

Just checked my 201 disc, they DO refer to the bottom tank as the overflow tank. In the work instructions they DO refer to the pressure tank as the expansion tank, referring to it once as the "reservoir", which actually I do see a lot in the owners manuals.
Gilly

[Gilly]

Just checked my 201 disc, they DO refer to the bottom tank as the overflow tank. In the work instructions they DO refer to the pressure tank as the expansion tank, referring to it once as the "reservoir", which actually I do see a lot in the owners manuals.
The OVERFLOW tank is often overlooked (as you can not look at it at all!) after a headgasket job, where there has been oil mixed in with the coolant. The job will seemingly be all done and the cooling system flushed and all seems well. Then the car starts getting oil into the coolant again so the owner thinks the job was botched, when the real problem is the overflow tan was never emptied, and actuall for what it costs should have just been replaced, as they are about impossible to clean. No cap, just a nipple where the hose from the pressure tank connects, and a small spigot which will let the coolant spill out if the overflow tank completely fills.
Gilly