Vibration-Huming noise - Page 13 - Ford Transit USA Forum
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post #121 of 130 (permalink) Old 10-13-2016, 06:42:PM
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I have a 2016 Mid roof 350 Transit Wagon, with the 3.7 Engine. auto Transmission, and 3.73 rear Differential
I have had a throb or hum since about 300 miles on the vehicle. The mechanics have checked from the transmission
to the rear Diff. They have checked the steady bearings, and made sure they were okay. They checked and replaced
some of the universal joints, or at least made sure they all were in balance. The drive shaft has been totally replaced
but, it also was not the problem, and some of the gears in the rear diff have also been replaced.
I still have the throb, especially when I am slowing down from 55 MPH to 40 MPH with the engine running at
about 1500 RPM. The latest thought is that the trouble may be in the transmission. It may be something that
is not repairable. Ford engineers and mechanics have all been involved and yet the throb is still there. I am not sure
what they are going to do for me next. I now have 2500 miles on the van and in the colder weather, I am noticing the
noise is louder.
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post #122 of 130 (permalink) Old 10-14-2016, 04:19:PM
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I know all about this. Ordered a new wagon. It had noise at 47 and 70 mph. Told dealer I would not accept the wagon unless it was fixed. They tried and failed twice. I refused the order and got my money back. A heartbreak after the insane battle of ordering what I wanted, waiting for it to arrive, and then nothing. 6 months of life gone. They still have it unsold on their lot....noise is probably still there.
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post #123 of 130 (permalink) Old 10-14-2016, 06:45:PM
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I'm sorry to say this issue still exists in the new 2017 vans. When I test drove the van I heard the high pitched whine at 60mph. The salesman agreed that the sound was there and seemed to be coming from the back. Now I am home in CA with 1900 miles and during the long drive getting the van home I became very familiar with the sounds. At 40mph there is a low pitch thrum that just goes mmmm,mmmm,mmmm. At 60 mph there is a constant high pitch whine, not varying in the tone just constant.

To me it sounds like the diff and I actually doubt it is worth worrying about. A couple reasons I am not too concerned is it is a naked cargo van and I can hear every f'n sound like my head is under the van. In fact I think the back of the van is just one big speaker amplifying every sound. Once I have the back insulated and sound deadner installed it should be a minimal noise. The other reason I'm not too concerned is I am going to put a locker in the rear so the diff will come apart and get all new bearings and a proper careful reassembly. So once I crack open the rear diff I own it, the dealer will just say it is my fault.
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post #124 of 130 (permalink) Old 10-15-2016, 04:23:PM
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Check the transmission mounts.
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post #125 of 130 (permalink) Old 11-18-2016, 01:07:AM
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I just bought a new 2016 250, with the 3.2 diesel. First off, I love how it drives, handles etc., and the fuel economy is great, averaging around
21-23 MPG. But I have had the same problem with this thrumming between about 50 and 60 MPH, which gets louder under acceleration, and decreases about 50% when you let off the throttle. There is no doubt, this is from the drive line, nothing to do with tires, aero disturbances, transmission, torque converter etc. Downshifting to 5th has zero effect, so that eliminates everything forward. I suspect the problem lies in their decision to use a three piece driveshaft. Typically, a universal joint is not designed to be operated in a straight plane, it needs to have some angle to avoid a resonant frequency, which I believe is what is happening here with these vehicles. I returned the vehicle to the dealer and another one 1000 miles away in Florida, and got the usual Ford shuffle. "There are no TSB's we don't know whats causing it, we'll contact the factory." Same words both distributorships. Was back again today, as they promised they would "look into it further", but no cigar. That vibration will inevitably become more intense, and start to affect other mechanical systems. I have an engineering back round and have built many machines over the years, and will probably be removing present shafts, add a center mounted "carrier bearing" and run the van with two pieces, as is customary.
My Dodge 3500 with three times the torque, has a two piece unit as do the Ford Pick Ups. The long wheelbase is the culprit, but if the factory won't or can't offer a fix, you would have to accept their findings. Some claim that its a van, get used to it, they are noisy. That's horse ****, those engineers in Detroit need to get working on this, or they may end up facing a class action law suit. Just my opinion, good luck to everyone else with this issue.
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post #126 of 130 (permalink) Old 11-18-2016, 01:51:AM
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If it were a design flaw all the vans would do it. This is more of a single issue situation.

Noises can be quite frustrating for sure and near impossible to figure out.

My van, luckily, has been perfect except for the wet air filter in the beginning which was a design flaw.

I have the 350 cargo and on asphalt it's nearly silent perfection. I'm amazed how a steel box can be so quiet and smooth but I won't complain about it.

You obviously have some issue that needs working out but I doubt a class action lawsuit is applicable in this case.

Keep chasing it and you'll get it fixed.
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post #127 of 130 (permalink) Old 11-18-2016, 11:01:AM
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I already posted that my problem was solved by replacing the drive shaft, but it isn't. In the first weeks with the new drive shaft it was quite silent and I was very happy. Then the humming came back. Not so intensive like before but very annoying for me because in the meantime I became very sensitive on this frequency.. Months later a had an appointment with a Ford specialist and we drove together. He refused that there is something abnormal between 50 and 60km/h! And he also did not feel the vibrations on the steering wheel. We also removed the drive shaft and drove it as a FWD (I have the AWD version). For me it was instantly clear that there is no humming noise anymore. Now I know that it is definitely the drive shaft or the differential. But it doesn't help me because I can't convince the Ford specialist who says, it is normal for a van with this size.

I hate it..

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post #128 of 130 (permalink) Old 11-18-2016, 11:10:AM
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next thing I will do, is recording the vibrations on the differential and the steering wheel. then I will create a report with a plot of the wireless accelerations sensors in a function of the vehicles speed. but it will take some time to setup the measurement equipment and software.

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post #129 of 130 (permalink) Old 11-18-2016, 07:57:PM
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Or go to a driveline shop that builds driveshafts. They are experts and can checks balance and true up yours for not much money. Just like balancing a tire.
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post #130 of 130 (permalink) Old 12-21-2016, 02:00:AM
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Picked up my new 2016 Transit 350 Wagon with Ecoboost and 3.31 LS diff. I put new Cooper A/T tires on it the same day, but immediately noticed a loud humming noise from 54-62mph. Most noticeable at 58 mph. Not sure it happened with the stock tires. But it's very quiet within 3-4 mph before/after 58mph. Heading into the Ford dealership tomorrow and expect them to tell me it's the tires. No front end shake or shimmy, just a loud humming as if a window is cracked and you get the whop, whop, whop, whop, noise.

2016 Transit 350 MR Wagon, XLT, Magnetic, 3.5L Ecoboost, 3.31 Limited Slip
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