Weird sounds after catch can install.
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Super Member
Joined: May 2011
Posts: 883
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From: Vancouver
2018 e63s edition 1
Weird sounds after catch can install.
I had injectors, spark plugs, weistec catch can and an oil change with 2 cans of ceratec all done today at my trusted indy (a friend who used to work at mercedes). The shop did a nice clean install, zip tied up all the hoses, everything looks good. About 45 mins after leaving the the shop I hear what sounds like someone vaccuming their car in the parking lot beside me. I pull into a strip mall and as I'm driving past stores I can hear the sound bouncing off the windows... it's me. I pulled over and recorded the below video. It legit sounds like a loud household vacuum, much louder than my fans or anything. I turned off the car and it stopped. I went shopping for 5-10 mins, came back out and it didnt make the sound again upon startup. I called the shop and he wanted me to undo the oil cap to see if the sound stopped and/or if the cap was suctioned on really hard - but the noise had stopped when I came back out to try.
Also, is it normal for the actual catch can to be really hot to the touch? I won't have any hot oil in it yet but I assume hot air circulates through it so that's likely normal? I was monitoring my oil temp gauges and my temp was a bit higher than normal at 110C but doing a quick search on here that seems normal when running in manual mode for whatever reason, and I happened to be in manual mode in stop and go traffic - so I don't think temp was any higher with the can or anything. Not that it should be. Anyways, anyone know what on earth this sound was?
Turn your sound up, the video knocks down the volume level a bit. You can tell it's much louder than my injectors/valvetrain:
Hood closed:
Hood open:
Also, is it normal for the actual catch can to be really hot to the touch? I won't have any hot oil in it yet but I assume hot air circulates through it so that's likely normal? I was monitoring my oil temp gauges and my temp was a bit higher than normal at 110C but doing a quick search on here that seems normal when running in manual mode for whatever reason, and I happened to be in manual mode in stop and go traffic - so I don't think temp was any higher with the can or anything. Not that it should be. Anyways, anyone know what on earth this sound was?
Turn your sound up, the video knocks down the volume level a bit. You can tell it's much louder than my injectors/valvetrain:
Hood closed:
Hood open:
Last edited by ShaneN.; Jul 11, 2018 at 12:04 AM.
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Joined: May 2011
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From: Vancouver
2018 e63s edition 1
Is that different than the fans that would stay on after I turn off the car? It's louder than a typical electric fan sound, the video doesn't really show how loud it was. It also stopped when I shut down the car and I wasn't even driving the car hard at all (was in traffic), plus it was only about 23C outside. I've never heard my car make that sound, ever. The sound didn't really sound like a fan, more like a super loud house hold vacuum noise is the best way to describe it. I just went and ripped around for an hour and didn't hear it again and the temp outside is the same.
Last edited by ShaneN.; Jul 11, 2018 at 05:50 AM.
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'04 E55 (Gone but not forgotten), '13 C63 P31 (RIP), another '13 C63 PP
You certainly have a.. verbose style of writing...
How long have you had your car? Have you driven it in the heat before? These cars make a lot of noises that might otherwise sound weird were they coming from different cars. If you said it didn't come back and it didn't affect driving in any way, I wouldn't worry too much.
How long have you had your car? Have you driven it in the heat before? These cars make a lot of noises that might otherwise sound weird were they coming from different cars. If you said it didn't come back and it didn't affect driving in any way, I wouldn't worry too much.
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'10 C63
Seriously? I tell you what the noise is and you still question? It comes from the right wheel well/bumper area because it’s the oil cooler fan. It kicked on when it got hot. It wasn't there when you restarted because the car had cooled off. It’s going to take you a lot longer to find or get answers if you ask every question twice.
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C63 AMG P30 *EuroCharged*| Porsche Cayenne | Buell XB9SX
Originally Posted by chrisridebike8
Seriously? I tell you what the noise is and you still question? It comes from the right wheel well/bumper area because it’s the oil cooler fan. It kicked on when it got hot. It wasn't there when you restarted because the car had cooled off. It’s going to take you a lot longer to find or get answers if you ask every question twice.
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Thread Starter
Super Member
Joined: May 2011
Posts: 883
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From: Vancouver
2018 e63s edition 1
You certainly have a.. verbose style of writing...
How long have you had your car? Have you driven it in the heat before? These cars make a lot of noises that might otherwise sound weird were they coming from different cars. If you said it didn't come back and it didn't affect driving in any way, I wouldn't worry too much.
How long have you had your car? Have you driven it in the heat before? These cars make a lot of noises that might otherwise sound weird were they coming from different cars. If you said it didn't come back and it didn't affect driving in any way, I wouldn't worry too much.
Seriously? I tell you what the noise is and you still question? It comes from the right wheel well/bumper area because it’s the oil cooler fan. It kicked on when it got hot. It wasn't there when you restarted because the car had cooled off. It’s going to take you a lot longer to find or get answers if you ask every question twice.
Last edited by ShaneN.; Jul 11, 2018 at 02:53 PM.
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Thread Starter
Super Member
Joined: May 2011
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From: Vancouver
2018 e63s edition 1
I figure that's maybe what it is given that is aluminum (I think) trapped in a hot engine bay. I guess I just didn't expect that, but even my hood was warm to the touch at that point too. As long as you guys think those hoses aren't routed where they're too close to anything too hot then I'm not too worried about it.
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From: Vancouver
2018 e63s edition 1
On a side note, ceratec wouldn't make the oil run a few degrees higher would it ?
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From: Australia
2011 C63 AMG P31
Totally normal sound. As mentioned, your oil got hot thus the aux oil cooler kicked in. Nothing to worry about.
Nope, not at all. That would just be your driving, especially if your in manual mode!
Nope, not at all. That would just be your driving, especially if your in manual mode!
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'10 C63
My bad if it came off that way but I didn't not believe you, I'm on here asking opinions on a car I'm still not familiar with cuz I know you guys know these things. I was just trying to make it clear that it didn't sound like a fan and wasn't that hot or driven hard , in my described verbose-y way, to see if that's still what you figured it was. Lol. That's exactly where it was coming from though, right at the front there. What an embarrassingly loud noise.
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Joined: May 2011
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From: Vancouver
2018 e63s edition 1
I turned 34 today, so now I'm the big kid who never stops asking questions 
Nope. Went out tonight and actually ripped around in the car, maxed the temp a degree or two higher at 113f, no fan. Oh well it's clearly not a big deal, just seemed weird I'd never had it come on before especially given I was just stuck in traffic.
Nope. Went out tonight and actually ripped around in the car, maxed the temp a degree or two higher at 113f, no fan. Oh well it's clearly not a big deal, just seemed weird I'd never had it come on before especially given I was just stuck in traffic.
