My engine is vibrating and shaking van, only happens on Motorways

Robert Small

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Oct 1, 2014
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I have an Fiat Autotrail 2.8 D, W reg. Over last few years I have been getting a vibration that appears to be coming from the engine but shakes the whole Van. It only occurs on Motorways and used to happen rarely and not for very long, this summer we did 3,000 miles but had no trouble until we hit the M20 around Ashford and lasted 20 miles then stopped. The last three times I've used it it has lasted longer until it lasted almost all the time from Exeter to Tewksbury but stopped as soon as I got off the motorway and even at the same speeds 50/55 did not start again. At first ,in Germany, I thought it was the road surface and again in England but I asked my mechanic when he put a new gearbox in to check the engine mountings, fine. Any ideas, is it the drive shaft? is it just an old van, my mechanic doesn't seem to know except he feels the Van has years left in her. Please help.
 

Frentchy

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It could be Wheel Balance coupled with weak shockers, Is it more prominent on one side?
 

TheBig1

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Thanks for the reply but they are okay, checked during the last MOT
i seriously hope youre not implying you dont regularly check road wheels and tyres, leaving it to a yearly MOT

sounds like distorted tyres to me.....gets worse as tyres heat up on the motorway. tyres need replacing every 5-7 years regardless of tread
 
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Robert Small

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Not as I have noticed. But I can get someone to look at them. Thanks
i seriously hope youre not implying you dont regularly check road wheels and tyres, leaving it to a yearly MOT

sounds like distorted tyres to me.....gets worse as tyres heat up on the motorway. tyres need replacing every 5-7 years regardless of tread
Had a recent MOT. But will get the tyres checked Thanks.
 
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Robert Small

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Some of the M20 in that area is old concrete instead of tarmac and I think everyones vehicle vibrates along there .. I know mine does!

Another possibility is worn engine mounts.
According a mechanic they were okay when he replaced the gear box.
 
Nov 6, 2013
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Had the same on a car once. Was moisture inside one of the tyres. Took it back to the tyre fitters - removed tyre, cleaned and refitted. Sorted the problem.
 

Billy23

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According a mechanic they were okay when he replaced the gear box.
I am not a mechanic but I seem to remember, way back, like 40 years that you would get a similar problem if the prop shaft or drive shaft from the gear box was running out of balance. I notice that the gear box has been changed, did he put it back in the same position? I seem to remember if you turned it just one hole it was not running "true".

As I say, that is.....way back thinking, so forgive me if it is wrong.(y)
 
Dec 14, 2013
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Is it on accelerating only ?
If so it's the n/s drive shaft
I have the same problem but can't find the correct drive shaft.
 
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A while ago I had a problem with a Vito, the tyre place told me it was a vehicle problem took it to the merc dealer and he said straight way it was a distorted tyre, back to the tyre place and it was, new tyre and problem solved, a couple of years ago it happened on our VW T5 as well, they say that Michelins & Continentals are the worst for it and yes I have had one of each, Michelin contributed half the cost on to new ones on the VW.
Dave
 
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If you have had a new gear box I would check either prop shaft or drive shafts. (y)
 
Dec 15, 2013
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In some vehicles there may be a "balance" fitted to the drive shaft to the wheels.........one side usually longer than the other.......check that this "balance" isn't free and is clamped in the correct position.

Hope you find a solution soon.
 

TerryL

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I'd go with the distorted tyre - had this happen to me twice on 2 different cars. Replaced tyres, problem went away.

You probably only notice it on motorways as they are generally much smoother than ordinary roads and any vibration is more apparent.
 
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Would be interested in the diagnosis when you find out what the problem was. I had a works Citroen Relay that used to have similar symptoms it would vibrate violently with the feeling of something to do with driveshafts.....we would stop...... then carry on with no problems. It only happened two or three times in a 139,000 miles.
 

pappajohn

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Would be interested in the diagnosis when you find out what the problem was. I had a works Citroen Relay that used to have similar symptoms it would vibrate violently with the feeling of something to do with driveshafts.....we would stop...... then carry on with no problems. It only happened two or three times in a 139,000 miles.
you'll be lucky......the op became a read only member at 3.26pm yesterday......no more free posts.
 

Badknee

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I would get the front wheels balanced. That would show up a distorted tyre, damaged wheel or just out of balance.
 

TheBig1

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far too many people just presume that if a vehicle passes an MOT once a year it cant have any mechanical defects. loads of things can easily slip through the MOT inspection and to be blunt the driver is responsible for the roadworthiness of the vehicle on all journeys. I know some people rarely even check tyre pressures and fluid levels if ever. then they are surprised when they break down
 
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