Vibration > 65 mph
Having cured various vibration problems at lower speeds through injector cleaning and replacing EGR valve, PCV valve and the MAP sensor, which made a tremendous improvement and made the ride considerably smoother, I still have a vibration problem above 65 mph. At around 65 – 70 mph it manifests as a vibration which causes anything in the rear view mirror to appear fuzzy (incidentally side view mirrors are fine), but then in the 70 – 75 mph it is smoother agian, whilst above 75 mph the vibrations are harshest.
Does the front driveshaft sound a likely culprit given above? I should also mention that I have replaced the tyres and rims over the last few years and numerous balancing and alignments so less inclined to think there is any problem in this area.