'Snaking' wobble when accelerating. FL2 09 auto

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Dart1

New Member
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4
Really horrible sensation of whole car getting into what seems to be a harmonic wobble when accelerating from say 50-60mph and trying to change lane on motorway. Typically when trying to overtake. No clunk's in other odd noises. Newish tyres. Rear shocks and trailing arms replaced as it felt as if it was coming from rear.
Not like a wheel balance or engine vibration more as if you were towing and got into a snaking situation. Rather scary!
Any ideas as this has me really foxed? Thanks
 
Get some diagnostic on the FL see if any codes come up which may show that drive train as lost communication intermittently, rear diff locking up maybe?
 
Arctic2 said:
Get some diagnostic on the FL see if any codes come up which may show that drive train as lost communication intermittently, rear diff locking up maybe?
Click to expand...
I'd agree if it were going round corners - would changing lane be enough of a 'turn'?

Tends to be a 'thumping' as well rather than 'harmonic wobble'.
 
Interesting as we thought it must be front wishbones and so garage ordered a pair. He was slightly sceptical that this was the cause as he previously carefully checked for play, (wheels grounded as well as free) but could only find very little play. His MOT inspector confirmed that it would not even count as an advisory.
Just as he was about to fit them he noticed wheel alignment seemed way off, so much so that it was noticeable by eye. He will now send car off for specialist 4 wheel alignment before doing anything else. It will be really interesting to see outcome and I will certainly report back. It sort of makes sense as both rear shocks and arms have recently been replaced and I think it may have started since then, but couldn't be certain.
 
Dart1 said:
Interesting as we thought it must be front wishbones and so garage ordered a pair. He was slightly sceptical that this was the cause as he previously carefully checked for play, (wheels grounded as well as free) but could only find very little play. His MOT inspector confirmed that it would not even count as an advisory.
Just as he was about to fit them he noticed wheel alignment seemed way off, so much so that it was noticeable by eye. He will now send car off for specialist 4 wheel alignment before doing anything else. It will be really interesting to see outcome and I will certainly report back. It sort of makes sense as both rear shocks and arms have recently been replaced and I think it may have started since then, but couldn't be certain.
Click to expand...
If it only started when the rear shocks and arms were replaced then that should've given you a pointer, also the four wheel alignment should have been done after the replacements of the above, the rear needs to be aligned first before the front can be dealt with.
 
Just had 4 wheel alignment checked and adjusted. Nearside front was out but all others ok. Reset and all now checked and within limits. Bad news is pulling to right is just the same under acceleration from say 40mph. It is a very disconcerting feeling.
Should we now revert to previous plan and replace both front wishbones or could it be anything else? Mechanic did previously check them and although found some play did not think this was the cause. To recap, both rear shocks and arms have already been replaced.
Really foxed by this.
 
Does it definitely have a working AWD system? Torque steer is quite evident if there's no rear drive on acceleration.
 
Finally Solved!
In desperation booked it to local non franchised specialist asking them for a diagnosis only just to move forward. Received phone call after a couple of hours saying they had found the fault and fixed it!
Turns out that total wally of original 'mechanic' had failed to tighten bolt securing arm to rear hub allowing it to wobble all over the place. Garage took a video of loose bolt and movement of hub as evidence. Highly dangerous and very disconcerting to drive. We were right to identify it as coming from the rear. I think lesson is, check other people's work before looking elsewhere for causes.
The garage thought it strange that the 4 wheel alignment people didn't notice it although I suppose it wasn't really their job.
Called original garage to politely suggest they may like to check their work in future but he flatly refused to admit it was his fault.
Happy to congratulate Tamar County Cars on finding and fixing the problem, great outfit and previous good experiences from them. Will stick with them in future. I had better not mention the name of other outfit where I certainly will not be going again.
Brilliant to have my old Freelander2 back driving as it should. I've had it for years and really do rate them.
Thanks for all advice, a great forum.
 
Dart1 said:
Finally Solved!
In desperation booked it to local non franchised specialist asking them for a diagnosis only just to move forward. Received phone call after a couple of hours saying they had found the fault and fixed it!
Turns out that total wally of original 'mechanic' had failed to tighten bolt securing arm to rear hub allowing it to wobble all over the place. Garage took a video of loose bolt and movement of hub as evidence. Highly dangerous and very disconcerting to drive. We were right to identify it as coming from the rear. I think lesson is, check other people's work before looking elsewhere for causes.
The garage thought it strange that the 4 wheel alignment people didn't notice it although I suppose it wasn't really their job.
Called original garage to politely suggest they may like to check their work in future but he flatly refused to admit it was his fault.
Happy to congratulate Tamar County Cars on finding and fixing the problem, great outfit and previous good experiences from them. Will stick with them in future. I had better not mention the name of other outfit where I certainly will not be going again.
Brilliant to have my old Freelander2 back driving as it should. I've had it for years and really do rate them.
Thanks for all advice, a great forum.
Click to expand...

Good that you got it solved, and also that you shared the outcome - this may well help others.
I’d certainly be going back to the original garage to take the matter up…
 
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