Bentley Continetnal GT 2005 Intermittent Vibration From Rear
Discussion
Hi Everyone,
I looking a buying a 2005 Continental GT Mulliner Spec, 79k full Bentley service history, 5 owners, the last owner about 15 months (who did have a Bentley service carried out whilst in his ownership). The only issue I can find - and the selling dealer agrees on this point is an intermittent vibration coming from the back of the car thru to the front when accelerating hard from 20 mph upto 60-70mph. A local Bentley specialist and Bentley Leicester have test driven the car. Bentley couldn't find the issue, however my local Bentley specialist noted the issue described but does not have an idea what the problem is. He changed the transmission fluid to no avail, next stop is diff oil but I am doubting that this is will cure the issue. The car has no fault codes stored, it's just had a minor service at Bentley Leiceter with all green health check, the wheels are all balanced and all 4 tyres are factory spec put on only 3k ago. Just wondered if anyone on here had any similar experience? and if so what remedies are suggested. Thanks in advance, Jim
I looking a buying a 2005 Continental GT Mulliner Spec, 79k full Bentley service history, 5 owners, the last owner about 15 months (who did have a Bentley service carried out whilst in his ownership). The only issue I can find - and the selling dealer agrees on this point is an intermittent vibration coming from the back of the car thru to the front when accelerating hard from 20 mph upto 60-70mph. A local Bentley specialist and Bentley Leicester have test driven the car. Bentley couldn't find the issue, however my local Bentley specialist noted the issue described but does not have an idea what the problem is. He changed the transmission fluid to no avail, next stop is diff oil but I am doubting that this is will cure the issue. The car has no fault codes stored, it's just had a minor service at Bentley Leiceter with all green health check, the wheels are all balanced and all 4 tyres are factory spec put on only 3k ago. Just wondered if anyone on here had any similar experience? and if so what remedies are suggested. Thanks in advance, Jim
GAMBLER247 said:
The only issue I can find - and the selling dealer agrees on this point is an intermittent vibration coming from the back of the car thru to the front when accelerating hard from 20 mph upto 60-70mph.
Do you mean intermittent in that it only happens on some of the occasions you accelerate, or intermittent in that it comes and goes every time you accelerate?Best thing is to get it hooked up on a Diag.
Could be so many things, Torque Converter starting to play up, has the Fluid been changed on time, if it was was it the correct fluid? You'd be amazed how skimping on the correct fluid can mess up and cause T/Converter shudder, usually shows up after around 1200+ miles though.
Sensor going out at certain Revs/Temp , prop shaft bushes ? Does it happen after so many miles or a certain time/engine temp etc ? Such a complex car like a GT Bentley (10 - 12 year old cars like this are a ticking time bomb) you'll need a good Diag machine operator who knows those cars, anyone can hook one up but knowing the cars & being able to read the Diag machine there are few & far between...good luck...or just find another with Warranty really.
Could be so many things, Torque Converter starting to play up, has the Fluid been changed on time, if it was was it the correct fluid? You'd be amazed how skimping on the correct fluid can mess up and cause T/Converter shudder, usually shows up after around 1200+ miles though.
Sensor going out at certain Revs/Temp , prop shaft bushes ? Does it happen after so many miles or a certain time/engine temp etc ? Such a complex car like a GT Bentley (10 - 12 year old cars like this are a ticking time bomb) you'll need a good Diag machine operator who knows those cars, anyone can hook one up but knowing the cars & being able to read the Diag machine there are few & far between...good luck...or just find another with Warranty really.
Had similar (not on a Bentley). It was caused by two distorted tyres and only occured when the "out of round" patches were both aligned side to side. There was no easily visible evidence of the problem on the car but my friend who is a local tyre fitter spotted it when he put them on the balance machine. They didn't fail to balance but the treads had a clear lateral runout and uneven wear around the circumference. A pair of new ones fixed it and it's a cheap enough diagnosis, if they don't fix it take them off again.
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