What is this Sensor?

[RRichards86]

I'm want to replace my Oil Pressure Sender unit on my 86 Olds 307. But, in scanning my shop manual, I cannot determine what this one sensor is on the manifold. See photo attached. I know (or think) the one labeled TEMPERATURE SENSOR is right, but what is this other sensor? Any guidance here will be greatly appreciated.

 

[84 W40]

I'm want to replace my Oil Pressure Sender unit on my 86 Olds 307. But, in scanning my shop manual, I cannot determine what this one sensor is on the manifold. See photo attached. I know (or think) the one labeled TEMPERATURE SENSOR is right, but what is this other sensor? Any guidance here will be greatly appreciated.

The one circled with ? is your Temperature gauge or idiot light. The one to the right of that is your Temperature sensor, ECM takes reading of that for open loop , closed loop, TCC lock up.

 

[RRichards86]

The one circled with ? is your Temperature gauge or idiot light. The one to the right of that is your Temperature sensor, ECM takes reading of that for open loop , closed loop, TCC lock up.

Thanks for clarifying this for me. My shop manual was not clear about them. I appreciate the help