Hi
I have a E46 323Ci Coupe.
I had the front wishbone bushes replaced not long ago at my request as well as a BMW Inspection I Service at a BMW Dealer. I wanted those parts/components replaced because on the motorway i could feel a vibration in the footwell through my feet above 80mph. I can only really feel it at those speeds.
However, this is some weeks ago now and i have not been on the motorway since having had the bushes replaced.
Today i went to Silverstone so used the motorway and noticed on the M40 that:
70 - 80mph slight vibration build up through the front
80 - 100mph vibration gets much worse unfortunately
I think above 100mph it levels out though not really completely sure on that.
There is also a slight whistling sound around about 80mph. However, i noticed this a few years ago in 2008/2009 before the engine blew up.
Help!!!!
E46 - Vibration Help
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pony
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pacerpete
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Sounds like a bucklied wheel, Ilford pothole action ? 
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pony
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I think it affects the stability for sure. Maybe a geometry check is in order and wheel balancing?
Some of the roads near Turnham Green station are bad as in the subtle bumps. Enough to start to unsettle a car at unsociable speeds in my opinion.
I only got the bushes replaced because i told the Dealer this was happening. The technician looked into it and said it was the bushes which is apparently a common E46 replacement.
I am sure you must have seen this before.
Any other ideas what is could be?
PS the E30 i looked at it today to put in a litre of oil. And those cables near the top of the cam cover. i think there is some of that shroud is burnt/missing or not there. As there is just a blue/brown wires with nothing around them. And the car currently hunting alot for first 5-10 minutes upon cold start. There is also a bit of unburnt petrol vapour in the exhaust and it gets in my eyes.
Some of the roads near Turnham Green station are bad as in the subtle bumps. Enough to start to unsettle a car at unsociable speeds in my opinion.
I only got the bushes replaced because i told the Dealer this was happening. The technician looked into it and said it was the bushes which is apparently a common E46 replacement.
I am sure you must have seen this before.
Any other ideas what is could be?
PS the E30 i looked at it today to put in a litre of oil. And those cables near the top of the cam cover. i think there is some of that shroud is burnt/missing or not there. As there is just a blue/brown wires with nothing around them. And the car currently hunting alot for first 5-10 minutes upon cold start. There is also a bit of unburnt petrol vapour in the exhaust and it gets in my eyes.
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bss325i
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At those speeds it will be a buckled wheel.
E46 wishbone bushes are very common for wear and tend to last between 30-50k (genuine BMW) depending on wheel size and how the car is driven.
When the wear they will give a sloppy vague steering feel and when they are really f*cked they will knock over bumps and pot holes.
E46 wishbone bushes are very common for wear and tend to last between 30-50k (genuine BMW) depending on wheel size and how the car is driven.
When the wear they will give a sloppy vague steering feel and when they are really f*cked they will knock over bumps and pot holes.
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pony
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Nice thanks i get it checked out.
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lion_yo
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Worth checking the driveshafts? A mate of mine experienced a similar problem on his car although not a BMW.
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pony
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The prop shaft coupling is apparently starting to wear as it was an advisory from the BMW Inspection I Service. I didnt bother getting it replaced.
It was last changed in April-June 2008 circa 100 000 miles so about 28000 miles ago. I am sure this is too short life expectancy?
I have had the rear axle carrier replaced free of charge in 2007. This is common with E46 3 Series Coupe. [At the time i read in BMW Car it tended to affect 323/328. However, as we now know if affects M3s too. I think there was a component improvement in 2000 with 330 but i am not sure?]
As when accelerating there used to be a vibration you can feel something of somekind (difficult to describe for me) underneath the car. Also when cornering tight corners/fast there used to be a bloody noise from the rear. This only happened after i took it on one of these driving type course at Bruntingthorpe.
It was last changed in April-June 2008 circa 100 000 miles so about 28000 miles ago. I am sure this is too short life expectancy?
I have had the rear axle carrier replaced free of charge in 2007. This is common with E46 3 Series Coupe. [At the time i read in BMW Car it tended to affect 323/328. However, as we now know if affects M3s too. I think there was a component improvement in 2000 with 330 but i am not sure?]
As when accelerating there used to be a vibration you can feel something of somekind (difficult to describe for me) underneath the car. Also when cornering tight corners/fast there used to be a bloody noise from the rear. This only happened after i took it on one of these driving type course at Bruntingthorpe.