issues again ..noise on engine
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From: San diego cali
05 e55 amg
issues again ..noise on engine
I have this churp noise coming from engin dont know if its from sc or pulley or what :/ ?? Can you guys watch the bideo amd let me know if this has happened to any of you ?http://m.youtube.com/watch?v=zUo0F9NtOe0
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From: San diego cali
05 e55 amg
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From: Earth, USA, Atlanta, GA
E55
It sounds like a pulley. You can run the engine safely without the supercharger belt. I would do a cold start and let it idle for a minute or so. Inspecting hot pulleys is not fun. My guess is a supercharger pulley bearing is dry or worn out. OEM ones are not the best. I would reccomend the ASP idler set.
The supercharger is not always engages. If the chirp is only happening when yu step on it, that means it's a pulley.
The supercharger is not always engages. If the chirp is only happening when yu step on it, that means it's a pulley.
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From: San diego cali
05 e55 amg
It sounds like a pulley. You can run the engine safely without the supercharger belt. I would do a cold start and let it idle for a minute or so. Inspecting hot pulleys is not fun. My guess is a supercharger pulley bearing is dry or worn out. OEM ones are not the best. I would reccomend the ASP idler set.
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From: San diego cali
05 e55 amg
Thread Starter
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From: San diego cali
05 e55 amg
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A Merc
Sorry I said aux I should have said accessory
When I had that sound it ended up being the accessory belt tensioner
Make your car get cold(over night) and start it without the sc belt and let's see
When I had that sound it ended up being the accessory belt tensioner
Make your car get cold(over night) and start it without the sc belt and let's see
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From: San diego cali
05 e55 amg
Ok so if I start it with out the sc belt I shouldent hear that noise or what should happen when I start it cold and without the belt ? What am I looking for at that moment
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
Hulk is right.
We can make this simple. On supercharged cars, you should consider failing pulleys like oil changes and brakes. It's simply a matter of use. That cold chirp almost always comes down to the tensioner and idler pulleys. If your car has never had them done, I would replace all of them at this stage in the game. You can do them one at a time, but that just wastes time and money. Make sure it's not your crank pulley (MB term Harmonic Balancer). When those start to wobble, belts rub, causing the cold chirp.
The chirp when you hit the gas is likely a separate noise. My guess is you need tensioner and idler pulleys for the cold start noise, and a supercharger bearing for the other chirp. I've heard Eurocharged dealers complain about their pulleys, so I wouldn't rule that out. Sorry. But the procedure Hulk describes is the way to go about it.
I've had all those symptoms (except the supercharger chirp) on mine, and that's how I've always seen my mechanics get to the bottom of it. Remove this belt (supercharger) and that belt (accessory drive) to see if the noise remains, and that's how you isolate the pulleys. Good luck.
maw
We can make this simple. On supercharged cars, you should consider failing pulleys like oil changes and brakes. It's simply a matter of use. That cold chirp almost always comes down to the tensioner and idler pulleys. If your car has never had them done, I would replace all of them at this stage in the game. You can do them one at a time, but that just wastes time and money. Make sure it's not your crank pulley (MB term Harmonic Balancer). When those start to wobble, belts rub, causing the cold chirp.
The chirp when you hit the gas is likely a separate noise. My guess is you need tensioner and idler pulleys for the cold start noise, and a supercharger bearing for the other chirp. I've heard Eurocharged dealers complain about their pulleys, so I wouldn't rule that out. Sorry. But the procedure Hulk describes is the way to go about it.
I've had all those symptoms (except the supercharger chirp) on mine, and that's how I've always seen my mechanics get to the bottom of it. Remove this belt (supercharger) and that belt (accessory drive) to see if the noise remains, and that's how you isolate the pulleys. Good luck.
maw
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'06 MB S55 AMG; '04 Audi Allroad 4.2; '05 BMW M3 Conv.; '92 MB 500E
There's an idler pulley down near the ABC pump... Driver's side of the fans, midway up the front fascia. It's hidden from top view, which is why you can hear it but not see it. You can find pictures of the engine on the web or on this site, if you haven't already.
Cheers,
maw
Cheers,
maw
Last edited by maw1124; Oct 6, 2014 at 09:16 AM.
