Whirring noise?
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 73
Likes: 0
From: Jamaica, Queens
97 420
Whirring noise?
My engine is making some kind of whirring noise. I can't pinpoint the location but it seems to be coming from somewhere inside the engine. It comes on for a few 2 or 3 seconds then is off for 2 or 3 seconds.
Is this bad? What could it be?
My guess is a vacuum leak of some sort, but that is only a guess. I could be completely wrong. Anyone had this noise?
Is this bad? What could it be?
My guess is a vacuum leak of some sort, but that is only a guess. I could be completely wrong. Anyone had this noise?
MBWorld Fanatic!
Joined: Nov 2001
Posts: 3,860
Likes: 3
From: Jacksonville Florida
209/W210 Estate /W211 modded by MBENZNL
My engine is making some kind of whirring noise. I can't pinpoint the location but it seems to be coming from somewhere inside the engine. It comes on for a few 2 or 3 seconds then is off for 2 or 3 seconds.
Is this bad? What could it be?
My guess is a vacuum leak of some sort, but that is only a guess. I could be completely wrong. Anyone had this noise?
Is this bad? What could it be?
My guess is a vacuum leak of some sort, but that is only a guess. I could be completely wrong. Anyone had this noise?
Sounds like the A/C compressor is cycled on and off check the A/C for a low charge ...also one can test the A/C via the A/C pushbutton controls ..do a search on the test info
Thread Starter
Junior Member
Joined: Nov 2007
Posts: 73
Likes: 0
From: Jamaica, Queens
97 420
I've figured it out
It is the serpentine belt tensioner.
However, I don't know if I have to replace the whole thing. I'm going to dig into it this weekend to figure out if I can repair it or what.
However, I don't know if I have to replace the whole thing. I'm going to dig into it this weekend to figure out if I can repair it or what.
