C55 engine whine
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2010 C63
C55 engine whine
I've heard it since new, just wondering what it is. I know what it isn't (now).
It's not the alternator, water pump, ac, power steering, or idler pullies.
My car makes the same noise with no serpentine belt. Maybe the oil pump?
It's not the alternator, water pump, ac, power steering, or idler pullies.
My car makes the same noise with no serpentine belt. Maybe the oil pump?
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From: bay area, california
Aston Martin V8 Vantage
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there was a thread on here a while back i remember reading, it is perfectly normal. mine does it sometimes when i come to a stop, but i realized it's the A/C. if yours does it all the time, you really have something going on. or there's a blower under there that you never noticed 
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From: Phoenix AZ & Cayucos CA
’27 AMG SL55(ordered), ‘23 EQS 580 SUV, ‘19 AMG E53 Cpe, ‘48 Willys Jeepster
I've had two idler pulleys replaced within the last year. Don't know which one or if they were the same one though. Both had the normal symptom of a whine that varied with engine speed.
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2016 Chevrolet SS, 2006 Cadillac STS-V
It does appear that most of the noise is from the oil pump/timing chain area on my car. The AIR pump makes noise too, but I can hear when that stops and the other noise is still there. Been told multiple times it is normal, wish it wasn't.
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From: GA
2016 Chevrolet SS, 2006 Cadillac STS-V
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'06 C55, '14 Audi S4, '09 Range Rover Sport, '07 Lexus ES350,
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From: Germantown, TN
2005 C55
Glad to know I'm not the only one. Right when I first start the car up in the morning, it's OBNOXIOUSLY loud...then the rpm's settle and it's not as prevalent, but it's still there. And whenever I give it throttle it seems to increase in volume, so I'm guessing the noise is somehow related.
So you guys are sure this is normal?
So you guys are sure this is normal?
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I've done a little more research and found some possible causes of this
1) hydrolic timing chain tensioner - noise will be loudest on cold start then go away after 10-15 seconds when oil pressure builds up. I believe this is what is causing mine, as I noticed that the noise goes away really quick if I use 10w oil instead of 0w. Tensioner possibly going bad?
2) transmission oil pump. I don't know much about this fix but I've read about someone who got it fixed and cured the issue.
1) hydrolic timing chain tensioner - noise will be loudest on cold start then go away after 10-15 seconds when oil pressure builds up. I believe this is what is causing mine, as I noticed that the noise goes away really quick if I use 10w oil instead of 0w. Tensioner possibly going bad?
2) transmission oil pump. I don't know much about this fix but I've read about someone who got it fixed and cured the issue.
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From: Phoenix AZ & Cayucos CA
’27 AMG SL55(ordered), ‘23 EQS 580 SUV, ‘19 AMG E53 Cpe, ‘48 Willys Jeepster
Low oil pressure to the TC tensioner will cause chain slap but shouldn't cause a whining sound.
As for the discussion regarding the whine coming from the oil pump, I've been fiddling with just about every configuration of oil pump over that past 30-odd years and I can't say I've ever heard one whine. That's usually the domain of idler and other bearings.
As for the discussion regarding the whine coming from the oil pump, I've been fiddling with just about every configuration of oil pump over that past 30-odd years and I can't say I've ever heard one whine. That's usually the domain of idler and other bearings.
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From: Salt Lake City, UT
C55 AMG, G320, C230 Kompressor
C55 Whining
So my mechanic told me that my oil pump needs to be replaced or watched very closely because of the whining. I am wondering if there is an engine oil pump and a separate transmission oil pump?
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From: California
06 C55, 09 E350
The whine in the morning is the air pump which is normal, but they also fail a lot so it could be worse due to failure. Mine is getting very loud as well I think it's time to get a new one.
just had new air pump & pulley fitted & noise still there so much for mb dealer diagnostic lucky covered by mb warranty which ran out day i got car back.
