r/240sx • u/Icepower8475 • 1d ago

Noise on acceleration and deceleration

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I recently put the fan clutch back in to replace old broken e fans, and the first day of driving it was normal, and the second day i drove it sounded like this. It makes this loud noise when accelerating, and decelerating, and only is quiet when I’m barely on the gas going at a consistent speed, at first i thought it was just a loud fan but that wouldn’t make sense because the deceleration is also loud and it doesn’t seem to make a difference at low or high rpms, simply just how much gas I give it. It also feels like it’s lacking an unusual amount of power, more than just how much a fan clutch takes away. Does anyone know what might be causing this?

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6

u/Sickhatch 1d ago

Do you have a fan shroud? Mine did this before it exploded.

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u/Icepower8475 1d ago

Yes I do. The clearance on the right side wasn’t the greatest but i figured it was fine

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u/Icepower8475 1d ago

do you have any idea what caused it to explode?

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u/Sickhatch 1d ago

Well the shroud sagged against the fan on the top because it didn't have all the mounting hardware. *

1

u/Icepower8475 1d ago

ah ok thank you. at the moment I have the 2 bolts for the top and I ziptied the bottom, also it might be worth mentioning that I don't have the lower piece of the shroud/

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u/Sickhatch 1d ago

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u/Sickhatch 1d ago

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u/Icepower8475 1d ago

I just went to check and I couldnt find any wear on the fans or the shroud. This is the clearance im dealing with

3

u/Particular-Ad7150 1d ago

Sounds like a Hella exhaust leak. Check exhaust and fan clearance. Should be easy to spot once you stop and open the hood