Hanging grey tube

[Flyingbanana]

I was changing the oil for the first time on the benz this weekend. I noticed a grey hollow tube with a black rubber grommet (L shape) at the end hanging behind the oil filter housing. I assume it is a vacuum tube. The other end of the grey tube disappeared at the center close to the wiper housing. But I cannot find where the black grommet attaches to.I looked at the firewall with a flash light, but cannot find what it attaches to. Any ideas.

[Len013091]

Check your throttle body, I think it attaches to a nipple on there. Does the car idle rough now?

[Flyingbanana]

The rpm's are not jumping. It does seem a bit rough though while idling. I've had the car for a couple of months only. I'll check the throttle body.

[OzC36]

Flyingbanana,

As Len said it sounds very much like the vacuum connection to the nipple on the throttle body.

See below for a photo of the throttle body and nipple at top right.

http://img65.imageshack.us/img65/8077/dsc03111it2.th.jpg (http://img65.imageshack.us/my.php?image=dsc03111it2.jpg)

PS. You owe Len and me a banana each!

[Flyingbanana]

Thanks guys. I looked under the hood last night, but could not find the nipple. I think the picture will help. I'll try it out after work today and let you know.

P.S. If it works, I'll give you a bunch of banana's each.