M102.980 Thermal Switches - Identification

[Eiderdown]

I see that there are four thermal switches on the front of the cylinder head. Can you help me identify their function?
1. Thermo-Vacuum Switch for Fuel
2. ???
3. ???
4. ???

 

[Eiderdown]

Just posting back an answer I got on another forum. I've not completely verified this but it looks right.
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1. Thermo vacuum switch
2. I think, is the thermo time switch which controls the cold start valve,
3. the switch for your engine fan, it could be a 100 degree switch or some were less; and
4. the coolant temperature sender for your gauge in the dash