View Full Version : What is this part for?

12-04-2009, 03:17 PM
I have this part on my 05 325Xi and in cold starts it make alot of noise for about a min or 2. What is it for and what is it called.

12-04-2009, 03:38 PM
Emission control air pump. Runs for a short period of time to clean up exhaust fumes until the cats can do their job. I didnt pay much attention to mine on start up but dont remember it making too much noise.

12-04-2009, 03:51 PM
i believe that is the ac canister

12-04-2009, 05:34 PM
secondary air pump

12-04-2009, 06:43 PM
secondary ari pump. It's used to meet emissions requirements during the initial warm-up period of the car... Makes some noise while operating... Shouldn't be too loud though....

12-05-2009, 01:28 AM
and i look dumb...whatever learn something new everyday.

Bimmer Heaven
12-05-2009, 02:24 AM
Yes, secondary air pump....Many of them get noizy after some time, it will stop working soon...*shiner**shiner*

12-05-2009, 01:58 PM
and i look dumb...whatever learn something new everyday.

Nolt really. I had to ask the same question when I got mine too.,.... *wiggle*

12-09-2009, 08:23 AM
It's the 'dookicky' it's connected to the 'snarfflepump'. it keeps your engine clean by emitting a fine mist every 15 seconds. Looks like it might be working overtime since your engine is so damn clean.

You never take that thing off road?

12-09-2009, 09:41 AM
The picture above is not my car, its a pic i found online. But mine almost as clean as the pic above and off roading only in the winter. 4 wheel drive