While putting my motor back in on my 83 Chevy G20, I came across this connector.

Going through the manual tracing wire color (Black and Yellow) it says that this is a Temperature sensor switch connector. However mine uses the single Drk Green wire. The sensor is located between the #1 and #3 spark plugs.

The Single Drk Green connector and the Black and Yellow connector are in the same wire loom. Could this be in the wire loom for those vehicles runing fuel injection and Closed loop?

Looking at the connector pins, it looks as if it has never been connected. They are solid black and not brass in color. Like they have been soaking up oil and dirt for years.

Heath

 

I concur, its pretty dirty leading me to believe its an unused connector...

 

Thanks, That the answer I'm going with for now... an unused connector.

I think this thing might actually kill me before its all said and done, but at least everything in it will be new. lol

 

So over the weekend I was working on my EGR Bleed solenoid. Mine had one of the inlets break off (Ouch!!). Since you can't buy them anymore, I started looking to see if it was even hooked up because I couldn't remember.

It turns out the plug goes to the EGR bleed solenoid.