Clapping sound in the engine

1998 MERCEDES BENZ CLK230
150,000 MILES • 2.0L • 4 CYL • 2WD • MANUAL
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DJOLR
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Hi, so recently i started hearing this clapping/clicking noise under the hood.
Sounds like an oil when its deep frying or like a snapped belt clapping something in between those two sounds.
Shows no temperature rising and no check engine light. I was in a lot of start stop traffic jam that day before the noise started. i was near my house when i heard it so i didn't drive a lot like that. Sorry for bad English.
Oct 18, 2019 at 12:26 PM
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STRAILER
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No problem. it sounds like the serpentine belt needs replacement. To be sure can you please shoot a quick video with your phone so we can hear the noise? that would be great. You can upload it here with your response. Here is a guide to walk you through the belt replacement with diagrams below to show you how on your car:

https://www.2carpros.com/articles/replace-serpentine-belt

Check out the diagrams (below). Please let us know what you find. We are interested to see what it is.
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Oct 19, 2019 at 3:45 PM
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DJOLR
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Yeah, belt looks pretty rough and thank you for the instructions. but i think this is something else. I only hear it when car is going like over 35 km/h here is the video. PS. someone suggested me that it is something with driveshaft(cardan).
Video (Click to enlarge)
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Oct 19, 2019 at 3:54 PM
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STRAILER
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Thanks for the video. That sounds like a drive line or suspension problem, when the car is at a stop in neutral rev the engine is the noise still there or only when driving?
Oct 20, 2019 at 11:21 AM
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DJOLR
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Only when driving over around 20 mph.
Oct 20, 2019 at 11:25 AM
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STRAILER
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So it it not an engine problem. can you tell if the noise is coming from the front mid ship or rear of the car? Try to get a video of the noise nearest the source. Then I can tell whats going on.
Oct 20, 2019 at 12:00 PM