sunhita

Anyone can help...?

It only happens early in the morning or when I just started the engine and drive-off.
I put in 1st gear, released the clutch and during the disengagement the rear (closer to passenger side) began to vibrate (dug dug dug). It seems the clutch was not gripping the plate well.

If I slipped the clutch deeper and give more throttle, the vibration is less severe...

However, when the engine is already warm, this problem disappears.

By the way, when the engine was already warm and I put in neutral at around 20mph or so, I did not hear any noise or vibration... or something to be concern.

Note: Clutch was replaced about 10,000 miles ago to Competition Clutch Stage 2. The pedal feels fine (no vibration) and the firmness is also measurable.

any clues....?

sunhita

any1?

my2ks2k

what's the rear tire pressure like? if it's low, after sitting for a bit they can get flat spots that will disappear once they've run for a bit, especially if it's cold out

sunhita

I am doubtful if the vibration and dug dug sounds came from flatten tire. Both rear has 34psi each.

I am thinking of the differential, but it is in the middle/ center of the car, instead of the rear passenger side...

It felt like the clutch is not gripping well to the plate, but when I extended the clutch pressure by pressing longer before releasing it, the "dug-dug" and vibration were minimized or calmer.

CoralDoc

Could be one of the CV joints in the half shaft. Try swapping them side to side and see if the noise goes away.