Vibration between 50 & 70 mph

[GT Pony]

The KEY is - maintaining a sustained speed for some distance - not a 5-10 minute jaunt in stop/go traffic, not speeding up then slowing down, not driving up the road and back. To really determine the issue, the owner or Tech HAS to really drive the car for distance and maintain speed within 55-60mph.

Again - the key is extended drive time at a sustained speed. If not doing that, the car (to most who don't know a thing about NVH or driveline issues) won't be able to discern the difference between actual driveline vibes and common road imperfections.

I would think if you're on a very smooth road you wouldn't need to drive it any more than 5 minutes to determine if there was a vibration problem or not.

Or are you saying that something in the drive train heating up from a prolong drive has some kind of bearing on if the vibration occurs or not? I wouldn't think so.

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[majtom94]

Just got denied for new wheel, Vibration issue

At 10,000 service I told technician there was a vibration at 80 in the wheels. Paid for balance job with rest of service. The vibration moved to 57 - 63 miles per hour. I complained again the tires have been rotated, one wheel found to be more than 7 grams out but they are able to zero balance. Still have the vibration.

Technician decided wheel was bent, however there is no evidence of any curbing, and I haven't rubbed any curbs.

Prior approval for warranty claim form was just returned denied.

Need suggested redress pathway and numbers. :frusty:

 

[theredmeadow]

If you drive the vehicle at a sustained speed around 55-60mph - this is where the vibe is felt the most and is pronounced. If you can maintain that sustained speed for more than 25-40mins - you'll definitely know if you have the driveline vibe, because it will be present in that specific mph range. Going above 65mph it's still there and may start to taper off around 70mph but is still there just not as pronounced when at 55-60mph.

The KEY is - maintaining a sustained speed for some distance - not a 5-10 minute jaunt in stop/go traffic, not speeding up then slowing down, not driving up the road and back. To really determine the issue, the owner or Tech HAS to really drive the car for distance and maintain speed within 55-60mph.

If driving and gradually increasing speed up to 55-60 - an owner will definitely feel the vibe come on at the 55 or 60mph mark. Once maintaining mph within the specified range, not only will the vibe be present - but what others have said - you will hear a distinct hum or low rumble.

You have to have all accessories off - no HVAC, no radio and windows up. Listen to the car, if the vibe is as bad as mine (and as others have reported), you can definitely hear the NVH sound as the rotational mass is maintained at 55-60mph. You should also feel the vibe in the floor pan, gas pedal, steering wheel and trans tunnel while cruising at 55-60 for an extended drive.

Again - the key is extended drive time at a sustained speed. If not doing that, the car (to most who don't know a thing about NVH or driveline issues) won't be able to discern the difference between actual driveline vibes and common road imperfections.


---

My car is at the Ford Service Center again - dropped it off today for them to take the 4th attempt. This time they have the special vibe detecting equipment.

So my Cliffs:
1st initial visit to Ford Service Center: Attempted fix was rebalancing front tires.
2nd visit: Driveshaft re-indexed
3rd visit: DS removed and sent to independent shop because the FSC determined the driveshaft was out of balance.
4th visit: pending outcome



Is the Ford Engineering Team lurking and reading this thread? Any news yet if they are looking into the issue?

Oh and BTW - yes I know vehicles have been fixed via certain resolutions in this very thread - and yes, I did present my FSC with the exact notes from this very forum as well... So it's not like I didn't give them info to use for diagnosis and repair...

What's that - do I hear a TSB being created??

yeah when i drive on our freeway for 5-10 minutes or even right away i can hear it most at 55-60 and it does taper off at 70 and goes away around 80. i don't feel the vibration in the steering wheel but i hear it always, a low rumble. its not the road imperfections either.
could this be it?

 

[ultimate warrior]

its like driving on smooth blacktop then its like the road changes to something like this:

 

[theredmeadow]

I bet i have what you guys are talking about. do i go in and request that the DS be re-indexed? if left untreated will it get worse?

 

[shahram72]

OK, so by re-indexing the driveshaft is that just matching the yellow marks up? I want to help the service dept out as much as possible when I take it in on Thursday. Seems to make sense to try the simplest and cheapest things first. I don't expect them to order me a rear end from the get go.

 

[icarumba]

At 10,000 service I told technician there was a vibration at 80 in the wheels. Paid for balance job with rest of service. The vibration moved to 57 - 63 miles per hour. I complained again the tires have been rotated, one wheel found to be more than 7 grams out but they are able to zero balance. Still have the vibration.

Technician decided wheel was bent, however there is no evidence of any curbing, and I haven't rubbed any curbs.

Prior approval for warranty claim form was just returned denied.

Need suggested redress pathway and numbers. :frusty:

All the info you need is right here:

https://www.bbb.org/autoline/

Ford will not help you. Ford couldn't care less about this issue. Your only options are:

1. Learn to live with the vibration.
2. Take Ford to arbitration.
3. See #1 and #2.

PLEASE NOTE:
If you go to arbitration and win, you have the option of having them either replace or buy back the car. In either case, you will be charged for every mile you put on the car until the date of the arbitration hearing. The sooner you get the process started, the less you will lose in mileage charges.

Best of luck everyone!

 

[888mustang]

Haven't posted in a while so wanted to update to possibly help others. I am a auto tech with 35 years experience. Got my Mustang Dec. 2014 and noticed right away it had a drive line vibration and hum 52-65 MPH. Talked the shop foreman at the Dealer and he ordered a drive shaft. Had it installed,we went for a ride and it was still the same. Then they road force balanced the tires and replaced 1 tire and rim,still the same. Took it to my shop and noticed that the yellow paint marks on the drive shaft and the pinion flange were not lined up (they were lined up on the original drive shaft) so I lined them up to as close as possible (didn't line up perfect like the original drive shaft)and it was 90% better. Next I moved it it to next closest position and drove it that way for the summer and it was good, may have been very slight vibration around 60? At the end of the summer I moved the drive shaft counter clock wise 1 position and it vibrated at 55-65 MPH. Then I moved it clock wise 2 positions and it was good, I think? Every once in a while I still think I have a slight vibration but it could be the road? I am very picky. So the point is turning the drive shaft on these Mustangs makes a big difference.Hoping for a T S B in case it gets worse in the future. Still thinking possible pinion flange out of round as turning the drive shaft on most other cars does not make a difference. Good luck to all.

 

[gov cheese]

I bet i have what you guys are talking about. do i go in and request that the DS be re-indexed? if left untreated will it get worse?

You are jumping way ahead. The first thing you have to do is get the service tech to admit there is vibration. Took me two trips to the dealer and a ride a long to get that. Third trip i asked them to swap tires with another car on the lot to rule out a tire issue. That was a HELL no but lets take another car out to see if it does the same thing. Yup same vibration, got a shrug from the service manager and a i guess that is how it was engineered. They did say that they contacted the ford hot line but there was no info on vibration issue.
Going to give that dealer one more chance when it warms up. If no resolution time to try another dealer.


IMO After reading through this thread seems to be three courses of action depending on your dealer.

1. blame tire + suspension + road surface for the vibration. Have a nice day stop complaining, working as designed. GEE, mustang owners are whiny
2. Easter egg it until it is fix.........MAYBE
3. A few lucky ones have had a Ford service engineer try diagnose the problem but even that has been hit or miss.


PM Deysha after you schedule your service
http://www.mustang6g.com/forums/member.php?u=7992

Let’s get this escalated for you guys as well. Please PM me with your VINs, dealers, mileage, full names, and best daytime numbers.

Deysha __________________
FORD SERVICE

p: 800.392.FORD
t: @FordService @FordMustang @Ford
f: facebook.com/FordMustang facebook.com/Ford

 

[GT Pony]

They did say that they contacted the ford hot line but there was no info on vibration issue.

W - T - F ??

Are the vibration guys at Ford working at Area 51 or something? :doh:

Just from reading about guys experiences in this thread, and Ford Service escalating most of these cases, how the hell can Ford not have heard something by now?

 

[Enzo]

OK, so by re-indexing the driveshaft is that just matching the yellow marks up? I want to help the service dept out as much as possible when I take it in on Thursday. Seems to make sense to try the simplest and cheapest things first. I don't expect them to order me a rear end from the get go.

Yeah I would go for that first. It's lining up the yellow marks. Hopefully that fix yours.

Sent from my SM-N920T using Tapatalk

 

[Jim05]

Well, my arbitration hearing is next Wednesday. What a disappointment that Ford prefers legal proceedings over standing behind their product. I'm taking a copy of this thread since it has such great material. I'm also debating on offering to go to a nearby dealer to compare mine to a model on the lot. The only concern I have is that since the poll indicates 44% of us have this problem that I have a pretty good chance of finding one that also vibrates.

PM me (or post) if you have any advice on the arbitration hearing, please.

 

[69mach1-395]

This poll has nothing to do with all the mustangs sold recently, mostly those that are not happy. But I am on your side...

 

[Cobra Jet]

yeah when i drive on our freeway for 5-10 minutes or even right away i can hear it most at 55-60 and it does taper off at 70 and goes away around 80. i don't feel the vibration in the steering wheel but i hear it always, a low rumble. its not the road imperfections either.
could this be it?

Yes, that is the exact experience that an owner will feel while driving a vehicle with such an existing driveline vibe.

I bet i have what you guys are talking about. do i go in and request that the DS be re-indexed? if left untreated will it get worse?

No. You don't request the Dealer to do anything other than what others have said - make the appointment, you and the Tech go on a good drive and the Tech has to confirm there is a definitive driveline vibe. Let the Tech drive, explain exactly when you feel the vibe come on. He should make the same notes on your work order (service invoice). Then wait to see what diagnosis is and pending fix (and results of corrective action).

OK, so by re-indexing the driveshaft is that just matching the yellow marks up? I want to help the service dept out as much as possible when I take it in on Thursday. Seems to make sense to try the simplest and cheapest things first. I don't expect them to order me a rear end from the get go.

Reindexing a driveshaft is this:
You (or a Tech) can mark the end of the driveshaft as well as the rear pinion flange (or front trans flange). After marking it, unbolt it from the rear pinion and you want to spin it at least 180* from its original position. Put a new mark (either different scribe or color) from the original mark so you can tell the difference. Reinstall DSand torque the driveshaft bolts. Go for a ride and see if the vibe is present or if it has subsided. If the vibe is still there - try reindexing again. If no positive results from reindexing - there's other issues that need to be looked into for further diagnosis.

W - T - F ??

Are the vibration guys at Ford working at Area 51 or something? :doh:

Just from reading about guys experiences in this thread, and Ford Service escalating most of these cases, how the hell can Ford not have heard something by now?

LMAO :lol: no really - it's not funny but you and all of us are wondering the same damn thing. Imagine all of the people who are experiencing the issue who have not found this thread (or don't use Internet) who most likely have made similar complaints at their local Dealer - and THOSE aren't in the system either???

Let's put it this way folks - regardless of what type or brand of vehicle - a transmission, driveshaft and rear differential weren't just put under vehicles in 2016... So I don't get how Ford Service Centers are not trained in knowing how to properly diagnose a driveline vibration... Hello?

Also I was told the same by my Service Center - "There's no TSB and there's nothing in the Ford systems for us to reference for the 2015/16 Mustangs regarding such concerns. We're gonna have to contact the Ford Hot Line".

Hey Engineering Team - you guys out there?

 

[347CobraII]

We're a bit harsh today.

Have you ever chased vibration issue in vehicle before because there not easiest thing to track down. It can turn out to be something that's not driveline related because said part acting like tuning fork. Been there done that.

So many blame driveshaft because it's 2 piece driveshaft that has carrier bearing in the middle. There's many Mustangs that have been built using it zero issues from 05-current. Plus millions of other vehicles across the world use carrier bearing. People like to say old mustangs didn't use 2 piece driveshaft but they were shorter. Plus my dad work for Ford dealership back in 60's to early 70's they had vibration and gear noise problems then. Change many rear gears out back even new Detroit locker from Torino guy didn't like that it clicked when turning. Dad end up with that put it in his pickup then I got it put it in my 70 Mach 1 LOL. They changed more gear sets out back then than we do now.

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