Hello update on my Van and its vibration and humming noise - the Van has been to Ford 5 times and another mechanic shop 3 times in an effort of trying to find the vibration and humming noise. Costing a lot of time.
At Ford they have told me it is the tires - we replaced the tires, road forced balanced them all wth no results, then they said it is the power steering pump - they replaced the pump still no better, now they are saying it is due to my conversion and the roof rack and roof vent (a Ford roof rack) - I argue that most vans have roof racks and vents and they would have a lot of customers lined up if that was the issue, then they tried to tell me that this maybe a 'normal' condition for the van - again I use same argument - they would have a lot of customers in their shops if it is 'normal' to have a van with a vibration and humming noise, we would all be driving Sprinters.
At the other shop we have put the van on the hoist and driven it in the air - you can actually hear a loud noise at the end of the transmission where the driveshaft connects - and you can feel vibration in that area - I explained this to Ford - they state that this is normal for these vans. I am convinced that the issue is somehow drivetrain related - Ford does not think so.
So now we are waiting for a Ford Engineering Rep to come and look at this - tomorrow the van is going to Ford again to have a vibration tester installed (for the 3rd time). It really seems to be like we are getting nowhere, especially as Ford just follows their diagnosis protocol and the tech and shop probably can not bill Ford for diagnosis?.
To re-cap the problem(s) - there is a THUM,THUM,THUM or HUMMING noise (like driving on unbalanced tires) in the van that you can start to notice at a speed of about 30km (20 miles), it really becomes loud at a speed of about 80 km to 105 km (50 - 65 miles). It is most noticeable when van is under load, i.e accelerating or going up a hill, less noticeable coming down a hill, the noise also seems to reduce when in Neutral but does not go away.
The Vibration seems to start at speeds of about 30 km (20 Miles) to about 105 km (65 miles) - the sweet spot where it seems worse is at about 60Km or 40 miles, at this point you can see the steering wheel vibrate.
I hope that others that have this issue speak up and let us know what they have done so far and what their plan of action is - to me it is NOT normal to have a $55k Van have vibrations and humming noises. Ford needs to step up and get it fixed - does anyone know what the next step could be?