Resonance on exhaust around 2.000 rpm
Moderators: jifflemon, coyote1980, Rachel
Resonance on exhaust around 2.000 rpm
I have a noise resonance at 2.000 rpm. Starts around 1.800 up to 2.300 more or less. It comes from the engine bay, and it doesn't change moving the engine when it's running so I discard the engine mounts. I think it is the exhaust but no leaks has been found.
It sounds with the car stopped or running.
It has been reduced after I've done 1.500kms wirh the car, now it is not so loud, but still there. Anyone has something similar?
I see this silent block in bad condition but I don't think it can be the cause.
It would be nice to solve it now, that the interior is very quiet. Not bad for a 20 years old car.
Any ideas?
It sounds with the car stopped or running.
It has been reduced after I've done 1.500kms wirh the car, now it is not so loud, but still there. Anyone has something similar?
I see this silent block in bad condition but I don't think it can be the cause.
It would be nice to solve it now, that the interior is very quiet. Not bad for a 20 years old car.
Any ideas?
Hector.
Re: Resonance on exhaust around 2.000 rpm
turn up the stereo ?Baxter wrote:I have a noise resonance at 2.000 rpm. Starts around 1.800 up to 2.300 more or less. It comes from the engine bay, and it doesn't change moving the engine when it's running so I discard the engine mounts. I think it is the exhaust but no leaks has been found.
It would be nice to solve it now, that the interior is very quiet. Not bad for a 20 years old car.
Any ideas?
Alan
480 ES 2litre 'Celebration' ? , C30 1.8ES, SS1
480 ES 2litre 'Celebration' ? , C30 1.8ES, SS1
Re: Resonance on exhaust around 2.000 rpm
well, yes, that's a good solution, specially if I listen to hard metal.
I know, perfection doesn't exist...but it's so nice when everything works as it best.
I know, perfection doesn't exist...but it's so nice when everything works as it best.
Hector.
Re: Resonance on exhaust around 2.000 rpm
Is the catalytic converter rattling?
Check out the videos on you tube to see if it sounds similar to what you have.
Regards
Simon
Check out the videos on you tube to see if it sounds similar to what you have.
Regards
Simon
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Re: Resonance on exhaust around 2.000 rpm
I used to have a similar resonance, turned out to be a result one of the heat sheilds on the bulkhead being loose (pulled through rivet(s)).
Previously....
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Whitney - 95 N White celebration No.449/480 now with Ladyforatey
Lula - 94 M Volvo 480GT Sold on...
Daphne - 95 M volvo 440si 1.8 73,000K (sold :()
Re: Resonance on exhaust around 2.000 rpm
I made a video but it doesn't sound very good. I have to make it better.
https://youtu.be/CMj5GfzRQSE
I think it is not the catalytic, it is not metalic noise but a very bass noise.
When I show it to the mechanic he thought directly to a vibration produced by the silent blocks of the engine, but they were ok. Maybe the silent block of the underframe or as you said the heat shield.
I heard this very similar noise recently in a completly different car, a citroen C5 HDI MkII with 170.000 kms.
https://youtu.be/CMj5GfzRQSE
I think it is not the catalytic, it is not metalic noise but a very bass noise.
When I show it to the mechanic he thought directly to a vibration produced by the silent blocks of the engine, but they were ok. Maybe the silent block of the underframe or as you said the heat shield.
I heard this very similar noise recently in a completly different car, a citroen C5 HDI MkII with 170.000 kms.
Hector.
Re: Resonance on exhaust around 2.000 rpm
Try you tube
https://www.youtube.com/watch?v=0BoT9C7rAm8
Using a jack gently as shown in the video could also help in diagnosis.
Worth a try.
Regards
https://www.youtube.com/watch?v=0BoT9C7rAm8
Using a jack gently as shown in the video could also help in diagnosis.
Worth a try.
Regards
Re: Resonance on exhaust around 2.000 rpm
Espada wrote:Try you tube
https://www.youtube.com/watch?v=0BoT9C7rAm8
Using a jack gently as shown in the video could also help in diagnosis.
Worth a try.
Regards
That's it man. It's a noise quite similar to that.
Now it's time to look for the culprit silentblock
thanks
Hector.
Re: Resonance on exhaust around 2.000 rpm
I am glad it helped.
Regards
Regards
Re: Resonance on exhaust around 2.000 rpm
Hi! Solved?