hey all,

recently, the engine has been making a "wheeeeeee" sound on every cold start, and I have been monitoring this for about a week/two.

i found out that it is coming from this thing (see picture below)

WHAT is that thing? I misplaced my owners manual so I can't figure out what that is.

any clue?

 

Dude!!!!
It's like a round thing.

 

OK, seriously, aint I taught you nuttin' ?
Can you say E P C ?
I know you can.

BTW- It's an idler pulley...or a tentioner can't quite tell...but epc will have drawings, pn's and you can order it online!

 

It's your turbo pulley. The "whee" sound you are referring to is the result of the built-in blow-off valve. Man, I seriously wish I had that engine...and those rims....and that kit...and that exhaust...and.....

 

he has a turbo? are you being sarcastic?

 

sheave pulley noise, likely.

had mine replaced as well.

 

hmm, now I have no clue whats going on. apparently I have a turbo? lol

btw, its a NA M112 3.2L V6 engine.

todd, I'll get EPC now. but I was just wondering if anyone knew.

 

sounds like you have a guide pulley making that noise...not uncommon from my understanding...easy fix and as far as I know it's covered under warranty.

 

I think MB is 4 year 50,000 miles, so I doubt its covered

 

Hey, I expect questions like this from Newbies, but you?

No mercy.

The problem is likely the bearing in the pulley, not uncommon and not expensive if you DIY. Pull belt, pop off the front plastic cover with a screw driver, unscrew, install new, install belt.
Weeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee!!!!!

I think maybe the "weeeeeeeeeeeeee" sound was a gaseous emission not coming from the car. How's your diet?

 

I believe it's the idler pulley. I had the same issue with the similar wheee noise.

 

hmm, I'm gonna go ahead and purchase that.

thanks todd! i am officially a newb again.

 

Anyone have a part number for this? I think mine went too, the belt came off today and that was loose. Part number and where to purchase? Thanks!!

 

https://epc.startekinfo.com/epc/coverage.jsp