Anyone have this noise from engine?
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 485
Likes: 2
W212 & W210
Anyone have this noise from engine?
I posted this at MercedesShop but no one seemed to have a definitive answer.
Over the weekend I noticed a strange sound coming from the engine.
It only happens when the car has been warmed up and driven around.
Temperature in the 95 degrees area.
Hard to explain the actual sound but kinda sounds like a rattling/grinding sound.
The sound does not change with the RPM of the engine. Nor does turning the AC on and off have any effect on it. When I stop the engine, the sound will continue for a few seconds and stop. I think it may be related to the fan but cannot be 100%. Also, when the engine is off, I tried turning the fan blade to recreate the shound but it doesn't.
Does anyone have any clue to what it could be?
BTW, it's a 96 E320 inline 6 with 169K miles.
Over the weekend I noticed a strange sound coming from the engine.
It only happens when the car has been warmed up and driven around.
Temperature in the 95 degrees area.
Hard to explain the actual sound but kinda sounds like a rattling/grinding sound.
The sound does not change with the RPM of the engine. Nor does turning the AC on and off have any effect on it. When I stop the engine, the sound will continue for a few seconds and stop. I think it may be related to the fan but cannot be 100%. Also, when the engine is off, I tried turning the fan blade to recreate the shound but it doesn't.
Does anyone have any clue to what it could be?
BTW, it's a 96 E320 inline 6 with 169K miles.
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Joined: May 2005
Posts: 2,825
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From: New Jersey
things with and without wheels
from the sound and condition i'm gessing the fan motor if electric ,if belt driven -fan clutch. Try to spin the fan by hand and see if you feel any rough spots or hear the noise.
Thread Starter
Senior Member
Joined: Sep 2004
Posts: 485
Likes: 2
W212 & W210
Originally Posted by RobertG
from the sound and condition i'm gessing the fan motor if electric ,if belt driven -fan clutch. Try to spin the fan by hand and see if you feel any rough spots or hear the noise.
I tried to turn the fan manually but could not replicate the sound.
Also, there is no free play or movement of the fan blade (bearing), except the normal rotational movement.
