I Need Some Help ID'ing Sensors

[ALBERTAN]

Well, after looking through electrical diagrams and Google, I'm done wasting time looking these things up. Someone please put me out of my misery and ID these so I can label the wiring harness in preparation for pulling the engine. Many thanks.

1. I need to know what this black wire is attached to. Haven't put much thought into this one, but the wire comes off the main loom.

2. I thought this was the knock sensor. But that's supposed to be a blue wire at the back of the block. This wire is GRN/YLW.

3. I thought I came across this one looking up some others, but now I can't figure it out. GRN wire attaching to a single spade connector.

3.

 

[3-5.0]

1 and 3 look like an oil sender and a coolant temp....shrug.

 

[captrob]

Pic #1 is an aftermarket oil pressure sensor
Pic #2 is the fan coolant temp sensor
Pic #3 most likely the coolant idiot light sensor. (Hard to tell from your pick)

Look here to verify : http://www.vortexbuicks-etc.com/24.htm

 

[TurboDave]

Pic #1 is an aftermarket oil pressure sensor
Pic #2 is the fan coolant temp sensor
Pic #3 might be the coolant idiot light sensor

Look here to verify : http://www.vortexbuicks-etc.com/24.htm

All correct.

 

[ALBERTAN]

Thanks for your help guys. Now to go get the Sharpie...