See video. Happens only on cold starts.
http://www.youtube.com/watch?v=yLD-t...e_gdata_player

Probably from a pulley right? Should I be concerned?

 

Sounds like one of the pulleys. That's kinda what mine sounded like before I purchased a set of ASP pulleys.

 

Damn... Going to have to pin point which one...

 

Pull the SC tentioner back and lock it there. Use a allen key to hold it back. See if the noise goes away.

 

Thanks for the tip, I'll give that a shot.

 

same sound I have I know it's the idler pulley shared with the SC idler. They sell it at the dealership for $700

The most over priced part ever.

 

Sounds like a loose bearing in the idler pulley.
Use a long screw driver and put your ear to it to isolate the noise.

 

$700!? Ouch

The sound goes away after the car warms up... Odd? Should this be replaced immediately or?

 

ASP is 1/3 that and twice as good

Here is my set

 

Check that ---ker. Same thing happened to me last week, SAME noise. Pull the belt off and see if it jiggles. If it's not on there true and tight, that's your problem.

 

Thanks for the quick help guys. How much and where to get that asp set? Need all them or can I just replace the idler?

 

I've never seen a 55k car without that noise when it's cold they all get them no matter the model. If it really bothers you change it out but mine ended up coming back after a while . If you get the ASPs let me know how it works out

 

Will do.

Anyone have part number for oem idler pulley?

 

I have the same noise.
I'm sure it's the belt tensioner.



Partnumber: A 112 200 01 70

 

+1

I have this sound to man, for the first 5mins when cold then goes away. Was told its no big deal, so I just put up with it.

 

tbal, I have a great setup that my guy who works out of a shed in Paterson put together for me. It routes the belts to the rear axle and back to the engine bay. We coat the whole system in diamond dust to make it extra durable. $4,000 for the whole setup, pay to play bro.

 

^^^Ahh this will live on in infamy

 

LOL!!!! Only if the center bolt is self adjusting. Where can I send payment.

 

That's a good one.

 

Hey Man

Before you drop some cash on pulleys etc - check your water pump.
I have the same noise on cold start ups and it was diagnosed as the water pump.
Tech told me that there was no wobble or looseness, so if I could live with the squeal, it will still last a while.

Just my 2c anyway

good luck with the fix

 

I have been trying to chase down a similar noise for the last few months. The squeal goes away after the engine warms up. I swear my 55k is louder than my dads old 300D

 

Mine sounded like that and swore it was the idler pulley. It turned out to be the serpentine belt. Try taking off the supercharger belt, or spray a little wd-40 or something on the serpentine belt and see if the squeak goes away.

 

Are you sure on that part number? It's $160...

 

I think so.

http://www.ebay.de/itm/130571685197?...84.m1435.l2649

 

thanks!