Itinerant Air-Cooled

This is about 6" in front of my Distributor. There's nothing connected to it. What is it?

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(Click for larger pic)

-John

Not exactly sure what that particular sensor is but it's not for anything on your engine. The tin screw for some reason has a larger diameter and different thread pitch than any others in that location so sometimes people stuff whatever will fit there if they loose the special screw.

interesting....dont know for sure, but id guess that with the two terminals, it opens or closes an electrical circuit based on temp of the block....like a coolant sensor in a watercooled turns on the fan

LiveonJG wrote: What is it?

Some creative effort from some long-ago PO engineeer.
Colin

Thanks for the replies. I sorta figured it was nothing I needed to worry about. Just wanted to make sure.

-John

Amskeptic wrote:

LiveonJG wrote: What is it?

Some creative effort from some long-ago PO engineeer.
Colin

no, it is not a PO mod, it is factory, part # 039 919 369. there are two sensors used in this location. i have only ever seen them on 75 and 76 MY. they both seem to relate to the injection system, however i recall that the vacuum based sensor (darker photo) is connected to the vacuum activated EGR valve.

Ahhhh!!

I just done learnt sumpthin.

Thanks for the info Scott. Where would those leads hook up to? Or, should I just forget about it?

-John

i think if you had a 75 or 76 FI harness they would hook up to some leads on the harness. i have a customer's vehicle that i have worked on that has this sensor. next time i see that bus i'll take more photos.

and the 039 number means its a 914 2.0L part....which I have never seen.

I must be an idiot. That would be the temperature switch to prevent EGR below whatever-the-cut-off temperature is. I do believe, IIRC.
Colin