These are off of my 86 tpi 305. This sensor is cracked around the plastic where it meets the metal part. It goes in the front of the intake manifold (probably a temp sensor since it goes into the coolant passage below the thermostat). I have not found a replacment one like it yet at the parts store.
I THINK everything worked ok before, these were cracked PRIOR to when I removed them.
Will it work?
Reuse or replace this?

 

Ok, and here is my egr (bad picture). The thing with the wire is cracked approx 1/16 - 1/8" below the wire. The part looks similar to a spark plug. I can jiggle the wire a tiny bit if I try to move it. I have not found this part anywhere yet. I have found a new egr, but it does not come with this part.
Will it work ok?
Reuse or replace?

Thanks

 

In all honesty, they're probably *okay*.... If you throw a code, or the car runs funny, definitely look into replacing them....but the wiring being just a little loose, I doubt it will affect the output much. Long as it still has a good connection.

The bottom one, on the EGR valve, I'm GUESSING would be a valve position sensor.

 

First pic is a cold start switch. It is used to fire the cold start injector when the engine is cold up until the coolant reaches a certain temp. I'm sure you can see if the injector is firing or not by starting the engine when its dead cold, and then place your fingers on the side of the cold start injector body. You should be able to feel it clicking if it is firing.

The second is a temp sensor I believe. Not entirely sure, as I've never had to deal with EGR on my TPI setup. I pulled mine off from the beginning.

 

Cold startups always worked fine on this car so I guess I will leave them alone.

thanks

 

Seal up the cold start sensor with epoxy or RTV. May last forever.

The wire from the EFR is the EGR temp sensor. It should be ok long as the wire isn't broken right off.