Author Topic: Thermo Time Switch  (Read 3040 times)

col320ce

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Thermo Time Switch
« on: October 11, 2016, 00:38:07 »
I'm pretty sure my thermo time switch is not working

On the bench I get 92.5 Ohms through G (and earth) and an open circuit on W, both at high and low temperatures (out of the fridge and in glass of 60 deg C water).
This is without putting 12v onto the G terminal and letting it warm up.  Is there another bench test I can do or is this enough to tell that it is bad?

It does not look serviceable ...

I stuffed the in car test up ... so I'll need to put it back in to check this again.

The marking are:
max 120
36/2/10

+5 C
+/- 3 C

4.76

-20 C
/12 sec

Thanks for any help ...
Col

1964 230SL
1965 250SE coupe
1993 320CE Sportline

66andBlue

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Re: Thermo Time Switch
« Reply #1 on: October 11, 2016, 03:08:47 »
The TTS testing procedures are listed here: https://www.sl113.org/wiki/Engine/ThermoTimeSwitch
Alfred
1964 230SL manual 4-speed 568H signal red
1966 230SL automatic 334G light blue (sold)
1968 280SL automatic (now 904G midnight blue)

col320ce

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Re: Thermo Time Switch
« Reply #2 on: October 21, 2016, 11:45:11 »
Thanks .... it's toast
Col

1964 230SL
1965 250SE coupe
1993 320CE Sportline