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Old 11-14-2012, 01:39 PM   #1
YesMAN
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Engine Shake

Anyone have an engine shake around 1,800 to 2,000 rpms? At first I thought it was tire related but when stopped I popped it into neutral and revved it up and sure enough there's a rough high frequency vibration in that range and a low frequency vibration (resonance?) right at about 1900. I'd estimate it's in the 300 to 400 rpm range.


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Old 11-14-2012, 02:44 PM   #2
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Quote:
Originally Posted by YesMAN View Post
Anyone have an engine shake around 1,800 to 2,000 rpms? At first I thought it was tire related but when stopped I popped it into neutral and revved it up and sure enough there's a rough high frequency vibration in that range and a low frequency vibration (resonance?) right at about 1900. I'd estimate it's in the 300 to 400 rpm range.
Yeah I've noticed that there's a bit more vibration around that RPM range, especially when I go from 4th to 3rd gear. I thought this was normal was a part of the "European flavour" of the car.

Bear in mind it's not violent shaking or something.
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Old 11-14-2012, 03:08 PM   #3
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I haven't really noticed it in this car, but it was a characteristic of one of my past cars....a 2004 Mazda 3 2.0. Right before 2,000 RPM, it had a 'shake' that didn't appear anywhere else in the rev range. I wrote it off as a balance issue, which it probably is. If it was an actual mechanical issue (misfire, etc) that was strong enough to shake the engine, the ECU would've picked it up and given you a check engine light. I woudn't worry about it if I were you.
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Old 11-15-2012, 11:08 AM   #4
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Quote:
Originally Posted by YesMAN View Post
Anyone have an engine shake around 1,800 to 2,000 rpms? At first I thought it was tire related but when stopped I popped it into neutral and revved it up and sure enough there's a rough high frequency vibration in that range and a low frequency vibration (resonance?) right at about 1900. I'd estimate it's in the 300 to 400 rpm range.
Hi YesMAN,

If you're concerned, you can always have your dealer check it out the next time you have an oil change or other scheduled maintenance visit. They'll be able to diagnose it or give you some peace of mind. Worth the trip, I'd say.

Quote:
Originally Posted by dutd33 View Post
Yeah I've noticed that there's a bit more vibration around that RPM range, especially when I go from 4th to 3rd gear. I thought this was normal was a part of the "European flavour" of the car.

Bear in mind it's not violent shaking or something.
Quote:
Originally Posted by cbdallas View Post
I haven't really noticed it in this car, but it was a characteristic of one of my past cars....a 2004 Mazda 3 2.0. Right before 2,000 RPM, it had a 'shake' that didn't appear anywhere else in the rev range. I wrote it off as a balance issue, which it probably is. If it was an actual mechanical issue (misfire, etc) that was strong enough to shake the engine, the ECU would've picked it up and given you a check engine light. I woudn't worry about it if I were you.
Thanks for sharing your experiences, dutd33 and cbdallas. Great info, and I'm sure YesMAN appreciates it.

Feel free to shoot me a PM if you have any other questions,
Crystal
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Old 11-15-2012, 12:01 PM   #5
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I had a the vibration or rattle sound 1st-2nd 3rd-4th, but not so much any more. It was very annoying sounded like a metal shroud rattling. So the other day I removed the resonator tube from under the AirBox and the noise was gone. I reinstall and hit it and sure enough it was vibrating against the sub-frame. Put some foams in between and eliminated the rattle. There is another somewhere but i think it is the heat shroud under the catalytic converter. Gonna add some sound damning material to that soon.
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Old 11-16-2012, 09:46 AM   #6
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Quote:
Originally Posted by Brabs_Weather View Post
I had a the vibration or rattle sound 1st-2nd 3rd-4th, but not so much any more. It was very annoying sounded like a metal shroud rattling. So the other day I removed the resonator tube from under the AirBox and the noise was gone. I reinstall and hit it and sure enough it was vibrating against the sub-frame. Put some foams in between and eliminated the rattle. There is another somewhere but i think it is the heat shroud under the catalytic converter. Gonna add some sound damning material to that soon.
Mine isn't a rattle at all but rather a low frequency vibration through the pedals at around 1900 engine rpm. Just dropped it off at the dealer and the advisor said something about engine mount equalization. I'll post what they say at the end of the day.
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Old 11-18-2012, 10:42 PM   #7
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Did anyone get rid of the vibration coming from the under the hood?
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Old 12-05-2012, 05:19 PM   #8
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Yes, I started a thread about that when I first got my car. Mine is a vibration that starts about 2100 and goes to about 2500. It seems like an exhaust resonation. I find it unacceptable and frustrating but of course the dealer tells me that it is "normal". I would find it marginally acceptable on a four-cylinder motorcycle. I do not find it acceptable in a car. Did you get a resolution for it?
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Old 12-05-2012, 10:20 PM   #9
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Yes, I started a thread about that when I first got my car. Mine is a vibration that starts about 2100 and goes to about 2500. It seems like an exhaust resonation. I find it unacceptable and frustrating but of course the dealer tells me that it is "normal". I would find it marginally acceptable on a four-cylinder motorcycle. I do not find it acceptable in a car. Did you get a resolution for it?
Nope, drove another one it does the same thing.
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Old 12-12-2012, 11:16 AM   #10
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Thanks. That's discouraging. I'm going to get underneath and have a look. It's nothing I can't get used to but I don't like it.
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