Hi guys, yesterday my car developed strange noise. It sounds something like when you put a small metal ball inside a plastic cup and shake it.

 

I'm not sure if the noise is coming from the top of the engine or the back of engine. My car is an automatic, I can always hear the noise when I put the car in drive, and only sometimes in neutral.

 

Her is a video of the noise (it's dark so you wont see anything but sound is ok.)

 

Normal engine noise is up to 29 sec, then I put the car in drive and you can rattling noise start.

 

[video=youtube_share;-DYAFR7PLq8]

Might be worth trying a gearbox oil change but could be anything.

dose sound very tappy on your video ..

 

could u get another vid with you rev the engine a little

 

how old is the engine

when was the last oil change and what oil used

Sounds more like a buzzing noise, not like a usual bottom end death rattle?

think a better video is needed

 

rattle/tap Top end

Knock/clonk bottom end

Sounds like a bearing gone to me..... Cambelt pulleys...... Altenator.....????

Remove altenator belt temporarily and start.... if it is quiet then replace alternator, if not then replace belt...

My Saab made same noise when my serpentine belt pulleys went..... all rattling like that......

Thanks guys! I was hoping that noise will be something more common. I didn't run the car for last couple of days, I was busy.

 

Tomorrow I will start it a try to make a better video, also I will try to hear my way around engine in effort to pin point noise source. Thx again for trying to help me.