Need some help with some Sensor's

[gofastl]

I have a couple questions, iam installing my motor in my truck and I dont remember what this threaded hole is for, is it for a sensor?

Then this sensor connector that is on the alternator bracket, I do know it runs under the lower intake manifold.

 

[BriteRed20s]

sensor

Water temp, I think.

 

[1990stanggt]

That plug that runs under the intake may be for the non-functioning knock sensor. If the sensor is still there, it's mounted to a piece of the block just under the alternator.

 

[RIDE THE]

The hole on the drivers cylinder head is for the (CHT) Cylinder Head Temp sensor. It has a 5 inch long harness that goes up the connector on the Alt bracket that you have pictured.

 

[gofastl]

Thats what I thought but wanted to make sure, so now I get to go order me one of those. Thanks for the input

 

[RIDE THE]

You will need both the sensor and the small harness for it.

 

[gofastl]

Is there a seperate part number for the small harness?