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I have a 2001 Mitsubishi Lancer CE, I recently replaced the clutch as the release bearing was no longer servicable.

After replacing the clutch I noticed during deceleration a vibration like noise. At approx 12 seconds here, I take my foot of the throttle in 2nd gear going down a hill. I've noticed the higher the RPM the louder / higher frequency of the noise, also it seems much worse going downhill vs flat ground.

When I push the clutch pedal in (disengage the clutch) the noise stops immediately. And when I reapply sufficient throttle to accelerate the noise also disappears.

I don't think it's the clutch as I imagine that would also occur while accelerating. But it definitely appears to be drive line related. Also I confirmed the transmission oil level is full after I noticed the noise.

I'd appreciate any suggestions.

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  • If you're sure it's coming from driveline, check for play on the CV joints and bearings. Driveline noises should change/develop proportionally to speed, not engine revs.
    – Bart
    Mar 5 '18 at 8:42
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Did you have the flywheel resurfaced? If while in gear and moving if pushing the clutch in and out the noise changes it is most likely right there.

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Pump fluid in the clutch! there on the release cylinder next to the box there is a fitting for pumping! you have air in the system! the rod does not fully move the plug

Also check clutch pedal adjustment

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