Since having a stage 1 tune, downpipe and flex pipe installed to my RS265 some three years ago I have been experiencing an annoying high frequency related vibration in the steering wheel @ approx 3000pm only when driving ie I believe the problem is drive train related. There is also a very slight vibration @ 2000 - 2500 rpm also felt in the steering wheel. Generally the engine needs to be warm for the problem to occur. Also certain road surfaces seen make the problem worse. The following corrective action has been taken; My mechanic reinstalled the mid/back section of the exhaust which connects to the down pipe. Engine mount has been replaced to no effect. New tyres fitted, aligned and balanced None of the above solved the problem. My mechanic believes we have eliminated everything and the issue is the DMF. I am not convinced. One thing we haven’t done is removal of the resonator however I wouldn’t have thought this would be the cause. Seeking thoughts please.
It could well be the DMF mate, pain in the arse if it is, hope you get it sorted, nothing more annoying than a problem that's hard to pinpoint, I've had a few!
if been 3 years now and hasn't gotten worse unlikely be DMF unless its driven super gently for that duration once DMF starts to split tend to hear rattle sound at idle and if open drivers door can see hole door moving up/down also can take good amount time driving with it split before completely disintegrates.
There is no rattle, the vibration doesn’t occur at idle or when the clutch is pressed and the clutch itself is working fine. I’ve owned the car since new, always looked after it. I would describe my driving style as “spirited.” Outside of the DMF I wonder what else could the problem be ?
Don´t think that it is DMF, if it was you notice on idle too. I had a couple of cases, one Accord and one Insignia, and after a lot of test and headache, it was the long driveshaft. If you had balanced the wheels, not have any bent and there´s not have many kms. or years, probably will be the driveshaft. Hope you find the problem, whatever will be!
Thanks. I’m not getting what I would classify as typical driveshaft problem type symptoms- there is no clicking. Just the high frequency vibration typically at 3000rpm. I wonder could the downpipe be touching something or perhaps a loose bolt which creates a resonance ? My mind boggles.
But don´t need to be the usual clank-clank-clank when you are turning direction, that is a CVD problem. Your symptom would be for unbalanced driveshaft. Other case that remember, sometimes the bolts of the steering rack can loosen up. I seen that in a lot of Mk2. Try to fit there, only for make sure that.
Thanks. What typically causes a driveshaft to become unbalanced ? Is the solution to replace or get it balanced?
Wouldn´t say to be honest. In the cases that I said, I´d replace they for a rebuild ones, and problem solved. Maybe yours had little slacks in CVD or in the groove, I don´t know man, it´s only an idea...
Yes, that I mean in post #5. How much kms. have the tyres? Time worked? You can see a four digits number in the outside of the tyre. That indicate the week and year that was made. If have over 5 year or 45000km(depends of brands), you would change they.
I don't think it has to do with the exhaust...I had a lot of vibration in my car because of the exhaust, but I know I took some exhaust flex out My exhaust was made by hand, and it was not 100% but over time it was better, the sound and performance, make "forget" this vibration! but if you've seen the exhaust and everything is fine, the problem should be different!
Thanks guys. Tyres are new and have done a rotation. Also once the clutch is pressed “in” the problem goes away. Just to recap, it a high frequency vibration like a buzz/ resonance felt in the steering wheel, not a wobble as such. So it is definitely drivetrain related. My mechanic feels it is not the driveshaft, he says the symptoms would be different. Time for a second opinion however what makes it worse is the problem is spasmodic - the engine needs to be warmed up and different road services impact.
....so has to be clutch as nothing changes with drive train motion wise when depress clutch, could be partial split DMF whats mileage on vehicle is it original clutch
This is what my mechanic thinks. However, the issue only occurs at certain rpm - minor vibration at 2000 rpm but more significant at 3000rpm. The latter is only when the engine is warm and on certain road surfaces
...or could be small piece of clutch plate broken off causing imbalance at certain rpm like a tyre would
id be tempted now to drop box with view to replacing clutch and bearing and hoping DMF is intact, at least youll come away with new clutch for next 50k miles and no vibration of course if flywheel's starting to split might need do bit overtime to cover that as well
Sounds a plan. Whilst at this stage the vibration is irritating it is spasmodic. I haven’t reached the “must replace now” stage. So I can live with the problem for now.
