strange buzzing sound from engine

[ivatu]

mi car is a 1995 420A i dont think its any problem but the sound is anoying this sound i hear it in american engines i want to know if theres a way to silence it o it sounds loud when accelerating

 

[Locke]

Inspect for loose heat shields. The entire factory exhaust system is covered with them.

 

[ivatu]

i have change the entire exaust sistem also the sound is coming from the engine i think its normal because i have heard many 420A s with the sound

 

[Locke]

My engine doesn't buzz. Is the sound coming from the ECU?

 

[ivatu]

nooo its from the outside the engine when i accelerate its sounds

 

[deadlyforce]

Is it a loose belt?

 

[Bud92gsx]

Do you hear this buzzing sound coming from out of the speakers perhapps??? I have heard lots of cars with this buzzing coming from the speakers on acceleration.

 

[ivatu]

no its coming from the outside because i dont have speakers

 

[DRAGIN]

When you say complete exhaust system did you put on a header? If not the manifold heat shields are notorious for rattling.

 

[Bud92gsx]

no its coming from the outside because i dont have speakers

Just for the sake of ruling things out...Yoiur not in reverse when you hear this buzzing are you??? Since you dont have speakers...

 

[ivatu]

no man im not tha noobie

 

[Bud92gsx]

Aight man, just checking. Well right now I have nothing for you. You hearing a buzzing might be a whole different noise to me. Without being there and hearing it. I really can't give you anything solid to go on..

 

[ivatu]

let me see if i can take a video and upload it by tomorrow

 

[Bud92gsx]

That would be a big help. See If you can do that please!!

 

[Bud92gsx]

SoI talked to my n/t buddy and he said the same thing Locke said. Check the heat shields, and timing belt for unusual signs of wear.

 

[EDM95]

Have you pulled the valve cover to see if there's anything loose or broken in there? Have you checked your pulleys and belts to see if there's any misalignment?

 

[mentalTSiAWD]

Noisy Injectors? would have to hear it.

 

[ivatu]

as for the heat shields i dont have them because i have a costum exaust also the timing belt its alright
hey how can i convert the format of my camera and where to upload the video ive neber done it?

 

[Locke]

Upload video to Youtube, or Google Video, or something of that sort.

The factory exhaust manifold, "downpipe" section, and catalytic converter all also have heat shields, as well as the factory cat-back exhaust. Most aftermarket exhausts are cat-back, leaving quite a bit with heat shields.

 

[ivatu]

im saying i did mine from the factory exaust manifold without a cat to the muffler wich is a magnaflow!!!!!!!!!!

 

[rodent]

Does it sound like this?

<embed width="448" height="361" type="application/x-shockwave-flash" wmode="transparent" src="http://i169.photobucket.com/player.swf?file=http://vid169.photobucket.com/albums/u223/garyferg1/0917072107.flv"></embed>

I know its a different engine but my 4g63 is making the same sound.

 

[ivatu]

something like that but let me see if i can upload a vid tomorrow

 

[Fast-Orange]

could be oil pump gears, commom for them to howl a bit because they are H cut (spur gears), i beleived they make a revised helical style to quiet it down could be wrong tho

 

[ivatu]

<object width="425" height="350"> <param name="movie" value="http://www.youtube.com/v/NCtWjaTk0SY"> </param> <embed src="http://www.youtube.com/v/NCtWjaTk0SY" type="application/x-shockwave-flash" width="425" height="350"> </embed> </object>


thats the sound sorry for the bad quality

 

[ivatu]

any guess what could this be?