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What is this and what does it do?

Posted: Sat Jan 02, 2010 12:33 pm
by stup86
When I bought my E30, it didn't have the standard airbox, instead it had a cone filter and look like this:

Image

I noticed that there was a plug/lead hanging and can't find anywhere to plug. This is what I found:

Image

It's attached to the same wire group as the one that goes to this:

Image.

So anyone know what it does and where is goes.

I think it might attach to the standard airbox.

Cheers,

Stu

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 12:42 pm
by pac1982
I think mine has a plug like this just hanging around, if your cars running fine dont worry about it

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 12:45 pm
by cass1_5503
i think its for cars with a catalytic converter doesnt go on the air box someone will corect me if im wrong

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 12:47 pm
by sihooker
It's something to do with emissions(charcoal filter?), probably for US spec cars..

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 12:55 pm
by BEERBOY123
I remember asking this a while ago and was told it wasn't supposed to plug into anything, so don't worry.

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 12:57 pm
by mark_i
^ correct. the plug connects to a purge valve that allows breather emissions to be collected inside a charcoal canister.

Only fitted to vehicles with catalytic converter/lambda sensor.

safe to leave hanging loose in engine bay.

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 1:52 pm
by Brianmoooore
If you look near the throttle body, you'll find a pipe going nowhere as well!

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 2:00 pm
by xavier
If you plug it into your left ear you can hear Radio Berlin

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 7:03 pm
by TPS
My touring has a cat. on it, & makes use of that connector, also as Brian says, a blanked off pipe on the bottom of the throttle housing on non-cat. vehicles, on mine a pipe leads to the carbon canister (I thought that was the fuel filter at first, lol)

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 7:08 pm
by stup86
TPS wrote:My touring has a cat. on it, & makes use of that connector, also as Brian says, a blanked off pipe on the bottom of the throttle housing on non-cat. vehicles, on mine a pipe leads to the carbon canister (I thought that was the fuel filter at first, lol)
Good to know.

Cheers.

I thought that my car would of had a cat, feel a bit stupid now as I planned to remove it!!!!!!

Re: What is this and what does it do?

Posted: Sat Jan 02, 2010 7:19 pm
by TPS
The best way to tell is to look at the battery tray, if theres a black lead going to the exhaust, thats the 02 sensor leading to the CAT.