C class vibration

C class vibration

Author
Discussion

sja

Original Poster:

509 posts

227 months

Thursday 2nd April 2015
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Bought a lovely c class 320 sport.. It's 1st diesel for a number of years.. But it does appear to have a vibration through the floor and accelerator pedal at 70.. It's fast mind, mid range between gears is fantastic.. Could just be a quirk as diesel but does anyone else merc vibrate?

V12 AMG

712 posts

108 months

Thursday 2nd April 2015
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Get the propshaft balancing checked by a good specialist.

sja

Original Poster:

509 posts

227 months

Thursday 2nd April 2015
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Zero vibration accelerating just cruising at higher speeds, could still be propshaft?

V12 AMG

712 posts

108 months

Thursday 2nd April 2015
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I had a W210 E320cdi with a vibration between 55-65. It wasn't a shake of the steering wheel or front end, so I presumed rear wheels. Bolted 2 good known wheels on the back and no change whatsoever. Changed the known good wheels to front just to be sure, no difference.

Eventually found it was the prop centre bearing that had gone. Car was faultless apart from vibration at 55-65. It wasn't earth shattering and passengers didn't even notice but it bugged me to death!

sja

Original Poster:

509 posts

227 months

Sunday 5th April 2015
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Taking it to a local Mercedes specialist.. Expensive to fix?

sja

Original Poster:

509 posts

227 months

Friday 10th April 2015
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400 mile trip yesterday, it's not just vibrating at speed. Part throttle. Any speed causes vibration through floor and pedals. Rang dealer who suggests wheel balance, it's not wheels but asking hike to sort. Apart from vibration lovely car on motorway, mid range accelerating amazing

PositronicRay

26,952 posts

182 months

Friday 10th April 2015
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It doesn't sound like wheel balance, does it still do it with no throttle? My guess is the prop shaft, do these have flex discs?

mbtech01

174 posts

170 months

Friday 10th April 2015
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Sounds like the one way clutch in the torque convertor on the transmission may be playing up. My advice would be visit your nearest Mercedes dealer or specialist who has knowledge of this problem & get them to drive it & feel the problem. If the torque convertor is at fault any experienced Merc technician should be able to identify this fault realitivley easy on a simple road test provided the fault occurs at the given time.

sja

Original Poster:

509 posts

227 months

Saturday 11th April 2015
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Thanks.. I'm relying on supplying dealer (not mb) to resolve.. And he uses decidedly back street garage.. If they don't or can't fix I'll take it to mb or specialist.. Just bought it so would prefer not to end up with large bill

sja

Original Poster:

509 posts

227 months

Monday 13th April 2015
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Still waiting for dealer to sort, now have to add two more "faults".. Clunk from brakes when reversing.. Rotational noise from front when driving slow..

Worried now bought a money pit..

lbc

3,212 posts

216 months

Tuesday 14th April 2015
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Could it be the well known Valeo radiator gearbox failure issue?

sja

Original Poster:

509 posts

227 months

Tuesday 14th April 2015
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It's an 2009 car, thought they only affected earlier models?

lbc

3,212 posts

216 months

Tuesday 14th April 2015
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sja said:
It's an 2009 car, thought they only affected earlier models?
You are correct, but your original post did not state age of car.

I will go with propshaft or gearbox related issue, as these cars should not vibrate at any speed.

sja

Original Poster:

509 posts

227 months

Tuesday 14th April 2015
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Thanks for replies. Wheel balance tomorrow, at dealer request.

sja

Original Poster:

509 posts

227 months

Wednesday 15th April 2015
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Balance done.. Rears out, but fronts buckled, they have put a stack of weights on! Dealer having wheels straightened next week. Car drives better even with rears done.

Edited by sja on Thursday 16th April 06:20

sja

Original Poster:

509 posts

227 months

Monday 20th April 2015
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Dealer collecting car on Wednesday, wants to get the buckled front wheels sorted. Car vibration isn't wheel related though as it's also at slow speeds, slow down for bend. Speed up but not enough to kick down, car vibrates. I will ask hi. To look at torque convertor.