2002 9-3 stronge engine noise

[Engin021]

Any help?? https://youtu.be/QYHVzbc7dT0

[Digger]

You have a bottom end sound and a video camera hanging over the top of the engine doesn't tell much. If you can't get under the car, take the serpentine belt off, start the car and see if the noise changes. Takes about 10 seconds of running and you will know from the sound change, or lack of sound, if you're looking for pulley or crank.

[Engin021]

Thank you for your information.do you think it's easy to take serpentine belt off?? I think noise is exactly coming from there or maybe engine is going die What should I do for serpentine belt off can you tell me pls.

[Digger]

Thank you for your information.do you think it's easy to take serpentine belt off?? I think noise is exactly coming from there or maybe engine is going die What should I do for serpentine belt off can you tell me pls.

Put the wrench on the belt tensioner nut, push or pull which ever works best for your wrench and lift the belt up over the pulley edge. I suggest you Google up a U-tube on how to replace a serpentine belt, easy to do with the special belt wrench, can be done by linking a couple of combination wrenches, but you might want to see how this is done before you bust your knuckles doing it.

[Engin021]

I did today and start car without belt there is no noise engine runs good without belt. What is the problem do you think?? And I forgot would to say my tensioner is shaking to much and sometimes oil light is coming on but I have enough oil in the engine. I should change oil pump or what else?? Soryy about my english I hope you will understand thank you again

[Engin021]

And sometimes just working good no noise with serpentine belt on too..https://youtu.be/TlKAsUI-E_0

[Digger]

Shaking tensioner, no noise without belt.
Pull the belt again and hand spin all the pulleys for alternator, AC compressor, tensioner, basically everything the belt wraps around and if you don't find a binding drive pulley look to your harmonic balancer. These things do go bad every now and then.

For the oil light, a well reported issue on your year is sludge blocking the oil pickup screen, drop the oil pan and clean.

[Engin021]

Thank you I tried and everything is looks fine just idle pulley is little bit wrong but I don't think it's noise is coming from idle then I diceded to change harmonic balancer I should change crank pulley and harmonic balancer both or just harmonic balancer is will be fine?

[Digger]

Thank you I tried and everything is looks fine just idle pulley is little bit wrong but I don't think it's noise is coming from idle then I diceded to change harmonic balancer I should change crank pulley and harmonic balancer both or just harmonic balancer is will be fine?

You're the one who can see what the pulley and balancer looks like, so use your best judgment. The pulley itself never wears out, but they can get bent if the bolts get loose enough, or the balancer gets torn enough to wear and catch a hole.

[Engin021]

I changed the pulley and harmonic balancer both and I changed idley pulley I have tired to small serpentine belt to ac bypass but still making same noise then I will change this time belt tensioner(