So I was performing some mx on my newly acquired 1986 Trans Am, 305 TPI, and found this green wire just laying near the distributor. I looked all over and can't find what it goes in. I looked on the forums here and couldn't find anything either. Anyone have a clue what thos single solid dark green wire is?

 

Check to see if your egr has the sensor on it. This might be the plug for that. Is your SES light on?

 

My EGR solenoid is a two wire black/purple and grey

 

Looks like the egr temp switch connector, I just replaced mine on the GTA recently and that looks like it. As another poster asked is the check engine light on??

 

No, no check engine light. Everything works but the ac.

That's it though, wonder why it hasn't thrown a code

 

Does the CE light come on when you first start the engine (as a means of self-checking it's function)?

 

Yes, the light comes on when I put the ignition in the in position.

 

Sorry replying to an old post but I'm just putting my car back together. Anyone ever figure this connector out?

 

EGR Temperature Diagnostic Switch

 

This might be a dumb question, So there's a place on the egr under the plenum to connect to.

 

The temperature diagnostic switch is essentially a temperature sensor. The sensor wire is routed along the passenger side fuel rail (IIRC). It looks like this:

The sensor screws into the base of the EGR valve. It tells the ECU when the EGR is opened by sensing the rise in temperature.

 

Very cool. Thank you