[napeHbNYC]

Hey, guys, thank you very much first off all for being there whenever help is needed. While I do know this is an e90 post, I do apologize in advance as my car is e70 x5 35D. This is just a more active section so I figured I’d try my luck here(mods please forgive me 0 ). I have a 2012 35D with 92xxx miles and had this car since 84k and it always had this weird issue of excessive vibration at idle with no codes. Once I start driving it goes away, every time I stop(doesn’t matter P or D) it comes back. I can feel it in the pedal and steering wheel. I remember reading somewhere that the motor mounts are vacuum controlled(?) and there’s a TIS to reprogrammed the module which gets stuck in highway mode causing excessive vibration, but not really sure if that’s the case and can’t find that thread. So here I am. Thank you for your help!

[SPKFOX]

I mean, there's a very very small chance that it's that... But theres a way bigger chance that your harmonic balancer is beginning to fall and the rubber is separating. My car did it at the same mileage just about, if it is, it's not really that hard of a job to do yourself. And if you can afford it, get the upgraded fluidampr kit and you'll never have to do it again.. just look into the engine bay, if it smells like rubber at all or if you feel the rubber is separating in the balancer that very well could be it.

Also check your exhaust mounts, my cars pretty slammed and I'm constantly flighting my rubber hangers moving and shifting. It may shake excessively at idle or even be rubbing.

[335dlci]

Originally Posted by SPKFOX

I mean, there's a very very small chance that it's that... But theres a way bigger chance that your harmonic balancer is beginning to fall and the rubber is separating. My car did it at the same mileage just about, if it is, it's not really that hard of a job to do yourself. And if you can afford it, get the upgraded fluidampr kit and you'll never have to do it again.. just look into the engine bay, if it smells like rubber at all or if you feel the rubber is separating in the balancer that very well could be it.

Also check your exhaust mounts, my cars pretty slammed and I'm constantly flighting my rubber hangers moving and shifting. It may shake excessively at idle or even be rubbing.

I woulsnt recommend the fluidamper IMO. Too many people have removed them just to replace their faulty units.

[Soonerbilly]

FAI from Whitbread

[Shmee]

I’d start with replacing those vac lines on the mounts, Cheapest route. Since it goes away once the revs goes up it’s probably motor mounts tbh.

[RL18]

Originally Posted by Soonerbilly

FAI from Whitbread

That's what I have ^

I agree with everyone else sounds like HD you'll be amazed at how many vibrations go away. My entire dash use to vibrate in my 335d.

Also while you're in there I would also do clutched alternator pulley, thermostat, water pump, and both belts

[RL18]

Originally Posted by Shmee

I’d start with replacing those vac lines on the mounts, Cheapest route. Since it goes away once the revs goes up it’s probably motor mounts tbh.

the vibrations smooth out naturally as you go up in rpm meaning the HD doesn't have to dampen as much. So it can still be the HD

[Drifter2090]

I have this same issue, a very light steering wheel vibration when stopped in drive. Ill take a look at the balancer.

[napeHbNYC]

Thank you, what’s FAI?

[RL18]

Originally Posted by napeHbNYC

Thank you, what’s FAI?

Search "FAI Automotive Viscous M57 Harmonic Balancer"

[napeHbNYC]

Thank you, my car is going in for the airbag and idler pulley bolt recall on Friday if I remember correct there was a service bulletin for excessive shaking at idle, is that true and does anybody know the number?

[PURE340i]

I just changed my mounts and vacuum lines and the vibration is completely gone. Had a similar issue and it was worse on a cold start.

[BlueHen335d]

Motor mounts contain rubber. Rubber, especially as it gets older and starts to degrade, gets really hard when it turns colder.

My 335D got steering wheel vibrations in idle about this time last year. New motor mounts cleared the vibration right up.