My lovely C5 tourer has been faultlessly reliable (honestly!) until this winter where it has developed what I am convinced is a drivetrain vibration. In November time, accelerating in any gear but especially in 1, 2 and 3 created a torque-related vibration that was so severe all the interior plastics started rattling.
I had wheels balanced, swapped back to front and then replaced - no change. So I instructed my mechanic to replace the driveshafts but he could not find any appropriate units, so I found the following items:
Febi 182882 (passenger side shaft)
Febi 182886 (drivers side shaft)
I've just been on a 2,000km + to the Alps and back and there's still a noticeable vibration with high torque applications, especially in 2nd gear and at 70mph +. Think accelerating out of peages etc
This vibration almost disappears if you let off the throttle at any speed / scenario.1. - These shafts have a bunch of different Citroen OEM part numbers. Are they the correct length and spec for a 2009 C5 x7 Tourer 2.2 HDI manual 173bhp (DW12B engine code?) If not - could an incorrect part be the problem here?
2. What other typical components could cause a driveline vibration of this manner? I know this is a open question but the C5 has a very funky front strut design so if anyone knows of any typical issues it would be appreciated. My mechanic reckoned the obvious stuff (FRIP joints etc) look okay. Gearbox is a little crunchy going into 2nd - no idea if this is related.
I am 99.98% certain that wheels and tyres are not the problem as I've had a number of garages balance the tyres, swap back to front and I've got two new Goodyears at the front so I doubt it's those.
I'll book it in with Chevronics (I'm in the St Albans area) in the new year as I'm not confident my mechanic can diagnose this and I don't want to just throw more parts at the problem.
Thinking outside of the box is better than sitting in a dark one.
