Sensors on thermostat housing 1990 Toyota Camry 4 Cyl.?

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margaretm

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I have a 1990 toyota camry and on the thermostat housing there are four sensors, two on top are vacuum type with rubber hoses and then there are two on the side of housing (electrical). What 2 sensors are the electrical? both are broken and i need to replace them but no one can tell me what they are so i can go buy them? anyone out there have a clue? Thanks
 
one of them would be temperature sensor but the other one i have no clue may be low fluid sensor?
 
One is the CTS (coolant temperature sensor) that sends info to the computer.

The other is a sensor that operates the gage on the dash.
 
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