Vibration between 50 & 70 mph

[rvlyssup]

Just posting my experience regarding shimming the transmission cross-member: http://www.mustang6g.com/forums/showpost.php?p=2018445&postcount=113

I have the following rear suspension mods added on my car:
BMR Lockout Kit
BMR Toe Rods
BMR Vertical Links
BMR Rear Swaybar
BMR SP080 Lowering Springs
Steeda Cradle Alignment Kit
Steeda Diff. Bushing Kit (red)
FRPP Dampener Kit

Hope my experience somewhat gives people hope about their car. :cheers:

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[GrabberBlue5oh]

For all of you saying the dealers are telling you it’s normal, or they can’t fix it. Ask to take a ride in a new 2017 if they have one in stock, if not a used one and see if it’s any better. As I mentioned a few pages ago, my dealership had a 2017 in stock that was used with 700 miles on it. That car didn’t vibrate at all. Manager felt my vibration and the lack of vibration in the other car, so they took the driveshaft from their car and put it into mine. Problem solved

 

[Boostamoose]

Update :

Since my service adviser has been having a hard time keeping my in the loop since my last update, I decided to drive down and talk to the shop foreman myself. He has been the one who has been working on my car for this issue since I brought it in.

He informed me that the issues he mentioned about the curbed wheel was something he saw in his repair resource online about this issue being related to the differential and said the adviser just intercommunicated it to me.

He did say that after testing it day after day and indexing the drive shaft using the hose clamp method and trying to balance it on their machine. He has come to the conclusion that it still is the driveshaft causing the issue. He said, however, that it is the second part of the drive shaft, being that it's a two piece, that is the problem. He said the part that bolts into the differential is where his equipment picks up the vibration and noise while on the front half there is literally nothing.

The foreman told me that he wants to try and get in another driveshaft or even source it out to an independent shop and have them try to balance it out. He also mentioned that he honestly thinks the manufacturer Ford is using for the drive shafts it just a PoS, so he basically told me he's not comfortable releasing to car to me yet since he really wants to fix it, but right now his hands are tied. He escalated the case to Ford Corporate or something along the lines and is waiting for an engineer to tell him what he can do next. He did mention as a last resort he would take the driveshaft out of a used mustang that doesn't exhibit the problem that we test drove in, but he said he'd be very reluctant to do so because he doesn't want to pass this problem along to another customer.

At this point he told me the vibration is only present from 58-63 mph with 62mph being the worst anything before or after that is perfect.

 

[GrabberBlue5oh]

Update :

He did mention as a last resort he would take the driveshaft out of a used mustang that doesn't exhibit the problem that we test drove in, but he said he'd be very reluctant to do so because he doesn't want to pass this problem along to another customer.

At this point he told me the vibration is only present from 58-63 mph with 62mph being the worst anything before or after that is perfect.

this is what my dealer did. Took a drive shaft out of a used 2017 with 700 miles on it and put it in my car. Problem solved

 

[ScottsGT]

Sounds like you have some great people at your dealership to work with. Lucky man.

 

[GrabberBlue5oh]

Sounds like you have some great people at your dealership to work with. Lucky man.

Lucky for me I work for them. I’m the head technician at their Hyundai store (9 ASE’s) I told them what was wrong with the car. At first he tried telling me ford is calling it “normal” until I stumbled upon the TSB. They wanted to balance with hose clamps but I told them I didn’t want that. And asked for the keys to the used 17. I took that for a ride with the ford service manager who felt my vibration. And the lack of vibration in the used one. So they put that shaft in my car and my old shaft in the used one.

 

[CNCLester]

I have found the pinion end of the driveshaft to be where my vib is also. I have balanced with hose clamps and have 95 percent of it gone. It's still faintly present from 55 to 73 mph. Being a machinest for over 30 years the perfectionest in me nags to get all of it out.
I have a shaftmasters aluminium shaft arriving Friday and will install it. 100 percent money back if I'm not satisfied. When that is done and smooth I'm putting a torsen iron case differential in with 4.09 gears. Then it's happy time.
Ford is bound by corporate rules, we are not. I'll fix this issue one way or another. If all else fails I'll return it stock and see how the '18's are after they're on the road. It's a hell of a quality statement to have your customers fix your problems.

 

[shelbywannabe]

I have found the pinion end of the driveshaft to be where my vib is also. I have balanced with hose clamps and have 95 percent of it gone. It's still faintly present from 55 to 73 mph. Being a machinest for over 30 years the perfectionest in me nags to get all of it out.
I have a shaftmasters aluminium shaft arriving Friday and will install it. 100 percent money back if I'm not satisfied. When that is done and smooth I'm putting a torsen iron case differential in with 4.09 gears. Then it's happy time.
Ford is bound by corporate rules, we are not. I'll fix this issue one way or another. If all else fails I'll return it stock and see how the '18's are after they're on the road. It's a hell of a quality statement to have your customers fix your problems.

Thats my point exactly !! I dont mind wrenching on my car but I will be damned if I am going to let Ford off the hook on this one. I will probably end up sending in my Lemon Law paperwork after I find a set of stock PP rims to put back on it.

 

[usgiorgi]

Lucky for me I work for them. I’m the head technician at their Hyundai store (9 ASE’s) I told them what was wrong with the car. At first he tried telling me ford is calling it “normal” until I stumbled upon the TSB. They wanted to balance with hose clamps but I told them I didn’t want that. And asked for the keys to the used 17. I took that for a ride with the ford service manager who felt my vibration. And the lack of vibration in the used one. So they put that shaft in my car and my old shaft in the used one.

The poor bastard who gets that used 17....

 

[GrabberBlue5oh]

The poor bastard who gets that used 17....

my old one wasent terrible. Honestly if I wasent an automotive technician it could have easily gone unnoticed, you could hear it more than feel it. Luckily for me, I’m very in touch with my cars and I know how a car is supposed to perform.

 

[usgiorgi]

my old one wasent terrible. Honestly if I wasent an automotive technician it could have easily gone unnoticed, you could hear it more than feel it. Luckily for me, I’m very in touch with my cars and I know how a car is supposed to perform.

I totally get it. It's just the fact that someone will get the car and have no clue the whole shaft had been replaced. Speaks alot about the dealer to put a known bad shaft in a car they're selling.

I traded in my stang because I knew it wasn't how it should have been and was sick and tired of Ford jerking me around.

 

[GrabberBlue5oh]

I totally get it. It's just the fact that someone will get the car and have no clue the whole shaft had been replaced. Speaks alot about the dealer to put a known bad shaft in a car they're selling.

I traded in my stang because I knew it wasn't how it should have been and was sick and tired of Ford jerking me around.

According to them it’s fords fault. Ford will not pay a dealer for replacing the driveshaft for this issue being that they released a BS TSB that solves nothing

 

[CtheProducer]

First post here, a lot of great info! Thanks to everyone contributing, really helps those in NEED of actual answers! Great forum for sure.

2017 GT Premium Auto with 3.55 gears, after 2,100 miles the vibes started, and they are getting worse. Deep vibes, and some feeling in the steering/floor at certain speeds. Starts around 50mph, gets worse from there. Seems to settle down at 80mph just a tad, then over that it gets worse and worse.

I took it to Brandon Ford, where I purchased the car. After dropping off in the morning, I called later in the day to get an update, and told I would be called back. Little later I was called saying they could not feel anything. Told me I could ride with the tech so we could talk it over during the drive. Main thing I told them was you can not drive on some bumpy, loud road and tell its doing this unless you already know its there, well thats what he did, and only up to 50mph...... Sooooo, I told him to get on the toll-road where we could get some more speed and smoother roads. He finally admitted to hearing a little "something". He stated he didn't think it was the DS service bulletin issue as the floorpan was not shaking.....????.....

When we got back to dealership, service advisor and the tech talked about how they needed me to bring back car tomorrow morning so they can drive another one to see if similar sounds/feelings are there......

Truthfully I do not have the time to waste right now with work, and they are not providing a loaner as they think nothing is wrong, so I have not gone back yet. As I read on I am considering my options, still only on page 135 but jumped ahead as vibs are getting more apparent at higher speeds. Speeds the dealer is not going to drive the car at. And when I told them its real bad at 85, they told me any dealership would say to "Go kick a rock" if you told them there was vibration at high speeds..... ha! That is sure the heck not what the sales guy told me......

Wanted to get opinions on options that I see are on hand so far:

1) New 1 piece aftermarket DS, I see for some people this fixes it, and others it does not as it is the diff or or other mentioned things.

2) Deal with the dealer, have no car for a long time, but work to either have them fix it, or lemon law it after the third time they tell me to "Kick a rock"

3) Call BMR and get those guys to fix it up.

4) Get in my driveway and jack it up and go the hose clamp route just to see if it is the DS and not the diff or something else.

Thanks for any input and sorry for the longwinded post.

 

[HoosierDaddy]

Wanted to get opinions on options that I see are on hand so far:

1) New 1 piece aftermarket DS, I see for some people this fixes it, and others it does not as it is the diff or or other mentioned things.

2) Deal with the dealer, have no car for a long time, but work to either have them fix it, or lemon law it after the third time they tell me to "Kick a rock"

3) Call BMR and get those guys to fix it up.

4) Get in my driveway and jack it up and go the hose clamp route just to see if it is the DS and not the diff or something else.

What is the BMR option? I don't remember reading that in any of the vibration threads.

 

[CtheProducer]

What is the BMR option? I don't remember reading that in any of the vibration threads.

BMR Suspension, he hopped on around page 100 something I think (don't quote me ).... lots of great info on the driveline angles and how bad they are. Looks like with some shims and other things they got better angles and what not. Post #3058 on page 204 has someone that went to them for the adjustments and outlines what was done. I am in Tampa, and they are too so thats a huge plus. I had not read though the rest of this thread yet to see where they had gotten to, nor have I actually called them..... so sorry if I am mistaken somewhere.

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