CatmanV2
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Happy days
C
Good morning Voicey,
While there has been a significant reduction in vibration since fitting new engine mounts, is the vibration I'm still feeling at high revs due to clutch/gearbox or propshaft?
Thanks,
~C
If it's the propshaft, it'll do it when standing still....
C
The propshaft shouldn't be turning when the car is stationary - it is decoupled from the engine by the clutch.
The propshaft shouldn't be turning when the car is stationary - it is decoupled from the engine by the clutch.
Really? ****
C
The propshaft shouldn't be turning when the car is stationary - it is decoupled from the engine by the clutch.
Ah yes, unlike the Alfa GTV6, the clutch is at the front. The garage said nothing. They merely changed the mounts for me. I think I need to drive another QP to see if I'm being too fussy about the vibration...
Surely it will be turning with the clutch engaged and the 'box in neutral? Obviously when in gear and the car's stationary, it won't be spinning.
Both my QPs have been super-smooth, at all speeds. There's scope for fitting the clutch incorrectly, causing an imbalance - that's what my money's on.
Surely it will be turning with the clutch engaged and the 'box in neutral? Obviously when in gear and the car's stationary, it won't be spinning.
Yes, if the box was in neutral and the clutch was engaged the propshaft would be spinning. However this scenario never occurs as the TCU holds the clutch at the PIS ready to engage a gear.
To be 100% pedantic about it, there is a brief moment when the engine is first switched on that the TCU commands the clutch to kiss the flywheel in order to calibrate a number of parameters. This will cause the propshaft to spin but it is only for a very short peroiod of time. Even if you could catch it at this point, it would be pointless revving the engine as the TCU would cancel the calibration and open the clutch.
Obviously if you had one of the rare manual versions it would be possible to do the test as you describe...
was just heading outside to view the propshaft with engine running and car stationary.
It's not there , away getting new rear bumper fitted. Doh!