Humming noise from engine bay area e55 AMG
08-06-2023, 01:29 PM
#1
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Thread Starter
Humming noise from engine bay area e55 AMG
Hi everyone, my car has started humming. It only happens once the car is warmed up
And it doesn't go away unless I am at idle or below 1000rpm, see the video below.
I'm not sure what it is but I'm guessing its minor? I showed it to a shop and they said its a vacuum leak most likely
I do have a very slight shake at idle in the cabin but I assume that is motor mounts which need to be replaced (mechanic said they are worn)
Please let me know if there's something I can diagnose at home (using smoke test or something?) or if I should take it to a shop
My gas mileage is exactly what it should be, and I'm not noticing any performance loss
Just this annoying HUM which only goes away at higher speeds (highway)
And it doesn't go away unless I am at idle or below 1000rpm, see the video below.
I'm not sure what it is but I'm guessing its minor? I showed it to a shop and they said its a vacuum leak most likely
I do have a very slight shake at idle in the cabin but I assume that is motor mounts which need to be replaced (mechanic said they are worn)
Please let me know if there's something I can diagnose at home (using smoke test or something?) or if I should take it to a shop
My gas mileage is exactly what it should be, and I'm not noticing any performance loss
Just this annoying HUM which only goes away at higher speeds (highway)
08-09-2023, 06:33 AM
#3
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2009 E350 4M Avantgarde;mistress 2002 S600; wife 2014 C300 4M
If your car has ABC, it's probably from the hydraulic pump.
There is an SB for that regarding the accumulator (noise suppressor)
usually goes away above 1800 rpm
There is an SB for that regarding the accumulator (noise suppressor)
usually goes away above 1800 rpm
08-09-2023, 01:16 PM
#4
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'99 and '05 E55 AMG
OP, sounds like resonance in intake tract. Possibly partially clogged filters or an intake tube is cracked. I recommend you remove the entire assembly so the throttle body is open to the air for test. If noise goes away, inspect the air filter intake assembly for cracks, blockages, or open seams. If it remains, that will require more brainstorming...
08-09-2023, 02:12 PM
#5
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no I don't have ABC thankfully. My 2002 S55 did and I recall that noise being similar to this actually but my car has standard suspension
08-09-2023, 02:13 PM
#6
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W210 rides on steel springs.
OP, sounds like resonance in intake tract. Possibly partially clogged filters or an intake tube is cracked. I recommend you remove the entire assembly so the throttle body is open to the air for test. If noise goes away, inspect the air filter intake assembly for cracks, blockages, or open seams. If it remains, that will require more brainstorming...
OP, sounds like resonance in intake tract. Possibly partially clogged filters or an intake tube is cracked. I recommend you remove the entire assembly so the throttle body is open to the air for test. If noise goes away, inspect the air filter intake assembly for cracks, blockages, or open seams. If it remains, that will require more brainstorming...
Thank you I will start by removing and checking. Good idea
