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 96-V4: Heater Valve Copper Wire

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T O P I C    R E V I E W
SAAB96LPosted - 13 Oct 2021 : 20:54:12
Hello,

I am in the process of removing the engine from my 96. I have noted a rigid thermal copper wire, that goes from the heater valve control in to the heater matrix box.

It is certainly not for adjusting the water flow to regulate the temperature. as I can see that cable quite clearly.

Grateful if anyone can say what it is please.

Thank you.

Richard.

5   L A T E S T    R E P L I E S    (Newest First)
72sonett3Posted - 16 Oct 2021 : 22:22:37
It is not a wire, do NOT cut it!

It is a thin tube and it and the bulb at the end is filled with ether. The ether expands when heated and regulates the thermostatic heater valve.

--
'72 97
'77 96L conv.
'95 900SE conv.
'99 9-3T
? 006
green96v4Posted - 14 Oct 2021 : 12:05:38
when I took my heater box apart it was just coiled up under 2 metal tabs inside the heater box (probably just to stop it rattling) I replaced my heater valve recently with an E-Type valve (half the price) and just pushed the coiled wire into the hole
chris steedenPosted - 14 Oct 2021 : 10:31:30
I believe that the phile terminates in the warm air outlet duct/box (inside the car). It helps maintain a constant temperature outlet. Must admit that I can't see the reason for it except the designers thought it would give a more refined/accurate control of temperature.
SAAB96LPosted - 14 Oct 2021 : 08:56:44
Thanks Melle, but what is it actually regulating ??

Surely not the heat output, as the hot/cold lever is doing that.

It may become clearer when I disassemble the the heater matrix box and the heater valve.

Regards.

Richard.
mellePosted - 13 Oct 2021 : 23:43:03
It's a thermostat, there's a coil on the end but I can't remember where that goes exactly. The wire is filled with ether, so make sure you don't damage it (although I'm sure you can happily live without it).

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