What Is This Sensor?

LiveonJG · Post by **LiveonJG** » Sun Jun 10, 2007 3:57 pm

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

[albumimg]909[/albumimg]
(Click for larger pic)

-John

Westy78 · Post by **Westy78** » Sun Jun 10, 2007 9:47 pm

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.

dingo · Post by **dingo** » Mon Jun 11, 2007 7:57 am

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

Post by **Amskeptic** » Mon Jun 11, 2007 8:18 am

LiveonJG wrote: What is it?

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

LiveonJG · Post by **LiveonJG** » Mon Jun 11, 2007 8:28 am

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

-John

germansupplyscott · Post by **germansupplyscott** » Tue Jun 12, 2007 10:45 am

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.

spiffy · Post by **spiffy** » Tue Jun 12, 2007 11:10 am

Ahhhh!!

I just done learnt sumpthin.

LiveonJG · Post by **LiveonJG** » Tue Jun 12, 2007 12:20 pm

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

-John

germansupplyscott · Post by **germansupplyscott** » Tue Jun 12, 2007 12:27 pm

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.

Bleyseng · Post by **Bleyseng** » Tue Jun 12, 2007 5:14 pm

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

Post by **Amskeptic** » Tue Jun 12, 2007 6:47 pm

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

Itinerant Air-Cooled

Itinerant Air-Cooled

What Is This Sensor?

What Is This Sensor?

Re: What Is This Sensor?

Re: What Is This Sensor?