What is the pic above??
I hear a grinding noise
Thread Starter
Senior Member
Joined: Nov 2004
Posts: 391
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From: San Jose, CA
2000 E430 Sport
I hear a grinding noise
There is a grinding noise in my engine. Its not the water pump or fan. It is comming from the front of the engine on the drivers side on the top. I pin pointed it with a screw driver and listened to it. What could this be?????
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Joined: Jun 2006
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From: the Netherlands
'01 W210 E320 CDI
Front of the engine on top is where the cam gears and timing chains are in any MB motor. Or it could be a cam/valve thinghy. Does it go away when the engine gets warm or when you rev it?
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Joined: Sep 2007
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From: Atlanta, GA
97 E320
Sorry to hijack the thread but i have a buzzing sound coming from my engine right after i start it and it goes away after i rev it to about 1k rpm. Sometimes it goes away on its own after like 1-2 seconds. This only happens when the engine is warm. Do you know what might be causing this?
Thread Starter
Senior Member
Joined: Nov 2004
Posts: 391
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From: San Jose, CA
2000 E430 Sport
here is the pic anyone know what this is??
This is the problem. It makes a light grinding noise and dosent go away[IMG]<a href="http://s198.photobucket.com/albums/aa152/mike430sport/?action=view¤t=Photo_031708_001.jpg" target="_blank"><img src="http://i198.photobucket.com/albums/aa152/mike430sport/Photo_031708_001.jpg" border="0" alt="Photobucket"></a>[/IMG]
Last edited by mike430sport; Mar 18, 2008 at 11:30 AM. Reason: need answer
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From: San Jose, CA
2000 E430 Sport
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Joined: Nov 2006
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From: Charlotte, N.C.
06 CLS500, 04 Tahoe, 04 Infiniti G35 Sedan, Boeing 737
Hey guys, thats the air injection pump. Mine makes noise too. It runs for about 60/90 seconds then cycles off when engine is cold. Then again in about 2 or 3 minutes it cycles again for about 10 seconds. Helps to pump fresh air into the exhaust ports to keep emissions down.......... 
Jeff
PS: Thats not my dog thats me....................
Jeff
PS: Thats not my dog thats me....................
Last edited by citruspilot; Mar 18, 2008 at 06:12 PM.
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From: Atlanta
W222 AMG S63
I don't care to show my car for several reasons.
1) There's nothing special about my car.
2) I'm sure that no one cares about each and every major and minor mod I do. Alert The Media! I got HID headlights!!! (sarcasm)
3) I'm sure that if people did want to see it, they wouldn't want to see it on the screen 3 inches tall and every time I had something to say in a thread.
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Joined: Apr 2007
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300E a couple 1994 w124wagon E320 Wagon/,1971MGB Track/Rally, MG Midget Autocross ,2000 E320 wagon.
It
should not be grinding.Wrecking yard or http://www.autohausaz.com/search/pro...20@Smog%20Pump
to fix it.
to fix it.
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Joined: Jun 2007
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From: Socal
07E63, 12E350, 08997TT, 16SiennaSE
Hey guys, thats the air injection pump. Mine makes noise too. It runs for about 60/90 seconds then cycles off when engine is cold. Then again in about 2 or 3 minutes it cycles again for about 10 seconds. Helps to pump fresh air into the exhaust ports to keep emissions down..........
Jeff
PS: Thats not my dog thats me....................
Jeff
PS: Thats not my dog thats me....................
my goes away after 30 sec. or so. My is relocated behind the driver bumper but i still hear it in the morning. 
