Can anyone tell me what this part is?
 

This is on the passenger side. I can not see where this part goes any help would be awesome. http://www.318ti.org/gallery/data/757/Picture_062.jpg http://www.318ti.org/gallery/data/757/Picture_058.jpg

I don't know what kind of sensor it is but it fits into the the right brake duct.

Never mind found it on another forum but will post for others that might have same problem http://forums.bimmerforums.com/forum...d.php?t=540664

Thanks, the reason mine is hanging loose is the right side brake duct is missing from running over a dog a few years back...

That's where you can plug in the ambient ext. temp. sensor. You need to have the obc (upgrade I think) for the display. Search posts....I've read about someone around here doing it.

It's a temp sensor that goes in the passenger brake duct. Why do all those idiots on bf.c make random guesses? Zip-tie to anything in that area if your duct is gone (but replace the duct at some point. they're important to keeping your brakes in good shape).

If you have the OBC, there is another temp sensor in the driver's duct. Why there are two, I'm not entirely sure.

One for OBC one for the ECU to read outside air temps to keep the motor in tune....

Dave

whats the part number for the passenger side brake duct and the protection underneath it that locks it all in place?

www.realoem.com

Dave; why can't the same sensor provide both data?

I have looked but can not find the part in the list anywhere. What would it be under?

Thanks aceyx I was going through there one by one and that was the next subsection.

Probably because temperature sensors are notoriously finicky, and converting the analog signal so there is no crosstalk between the OBC
and the ECU. Its basically just easier not to share temp sensors.
Of course the newer can-bus and other type systems do this just fine...
Of course my 95 TI is now 12 years old.... So the tech back then wasn't as good.

Same applies to O2 sensors, never piggyback a on board display unit with your engine O2, just add a second O2. For no apparent reason last fall I fixed 3 different cars in 2 weeks that were having engine issues by removing the AFR meter from the factory O2 circuit.
It was somehow loading the circuit and the O2 would read too low.

Its weird that stuff comes in waves, 1 week everybody has carb problems, next week they all dump fire-bottles by accident. (Not kidding!) :eek: Darn good thing we had just bought a bunch of recharge kits....

Dave

To me that looks like part #24 in this diagram.
The OBC temperature probe is in the driver's side duct and the the one for the engine is in the top of the airbox on mine ('98). They don't look anything like that at all. Look at part #@ here. It's small and pointy.

Good call; I was thinking that it's so simple but thinking about what kind of computer I had back then (hint: about the release of the first Pentium processor) I can see why it's easier to engineer it that way.