Vibration between 50 & 70 mph

shelbywannabe · Dec 9, 2017

Sick03L said:
Just ordered the shaft masters DS. After messing with the hose clamps and thinking I had it fixed all it seemed to do is move the vibration higher up in speed. It's prob a waste of $$$ but i guess I can sell it right? Don't think I'll be putting a new rear in it. At some point you have to cut your loss.
I'm officialy fed up. Ford won't mess with it since its lowered even tho that has nothing to do with it.

I was fed up with Ford last month. Went out and test drove a few cars and traded it in. I probably could have eventually lemon lawed the car but I was so upset with the car and a wasted summer with the car at the dealer the whole time I just decided to move on.

Sick03L · Dec 9, 2017

barrykaye1001 said:
I’d be interested to hear if that works.

FWIW in talking to my DS repair buddy, the ends of the tranny and rear diff should be within 3 degrees of being on the same geometric plane. So if for example the tranny is pointing at 90 degrees, the end of the diff needs to be at or within 3 degrees of 270. They can be slightly offset from one another but if they are both pointing up, down or opposite each other it’s a no go. If you lowered the suspension, because of the IRS it’s possible that the geometry could have moved a bit which could cause a wobble vib.

Also, earlier in this thread, there’s a post from someone who had success with a Steeda subframe alignment kit.

It vibed at stock height... lowering changes nothing but axle geometry.

1024GT · Dec 9, 2017

Are the 18’s having this issue or was it resolved? Maybe too early tell??

Sick03L · Dec 9, 2017

shelbywannabe said:
I was fed up with Ford last month. Went out and test drove a few cars and traded it in. I probably could have eventually lemon lawed the car but I was so upset with the car and a wasted summer with the car at the dealer the whole time I just decided to move on.

I'm jussssssssst about there....

Sick03L · Dec 9, 2017

1024GT said:
Are the 18’s having this issue or was it resolved? Maybe too early tell??

Way too soon

shelbywannabe · Dec 9, 2017

Sick03L said:
It vibed at stock height... lowering changes nothing but axle geometry.

I don't know why people keep saying lowering the car makes it worse as there is zero driveline change made when adding lowering Springs. Look at all the cars over the years people have lowered or trucks being lifted and nobody complained about it then so something is amiss here and Ford has not let anyone know what it is. Whether it's fixed on the 18 is yet to be seen. Let's hope so. All I know is I was tired of messing with it and parted ways with my car.

Dominant1 · Dec 9, 2017

1024GT said:
Are the 18’s having this issue or was it resolved? Maybe too early tell??

Not a single report of vibes from the 18 auto or manual!

But lethal performance broke a half shaft with a 10 speed auto and a sticky tire!

CtheProducer · Dec 12, 2017

My vibes are back at 90 + speeds..... joy. Very minute, but it is there, especially if you grab the rear view mirror. Little harder to pick up at first because I have an exhaust system on now.

I was able to purchase a used DSS aluminum 1 piece, so will be installing this with hopes of that working with no vibes. I had tried to shim the rear trans bracket down 1/4", but that did not do anything for me. If there is a little vibe left with the DSS then I will try to shim it down again.

Updates to come as soon as install happens.

yessirrom · Dec 12, 2017

I have been driving a 2018 F150 for the last 5 weeks. My car is still at the dealership waiting for a rear end to arrive from the factory. The dealer has been very nice but come on.

hlh1 · Dec 12, 2017

Dominant1 said:
Not a single report of vibes from the 18 auto or manual!

But lethal performance broke a half shaft with a 10 speed auto and a sticky tire!

This could be good news on the vibes, if they've found a fix.

markw24 · Dec 12, 2017

hlh1 said:
This could be good news on the vibes, if they've found a fix.

FORD hired someone else to design and build the car.....:clap2:

barrykaye1001 · Dec 12, 2017

Was just looking at the poll results for this thread. Out of 947 voters, more than half haven't experienced the dreaded vibration. My question: where did the rest of us go wrong??!! :frusty:

hlh1 · Dec 12, 2017

markw24 said:
FORD hired someone else to design and build the car.....:clap2:

Too funny! :cheers:

hlh1 · Dec 12, 2017

barrykaye1001 said:
Was just looking at the poll results for this thread. Out of 947 voters, more than half haven't experienced the dreaded vibration. My question: where did the rest of us go wrong??!! :frusty:

Just received the low quality roll of the dice... Maybe ours were made on Monday or Friday...

keltymd · Dec 12, 2017

hlh1 said:
Just received the low quality roll of the dice... Maybe ours were made on Monday or Friday...

My 16 Ford bought back had it but you 17 does not. The 17 had a note in the glove box from the people on the line wishing me a merry Christmas signed by several of them. Maybe thats the deal sometimes they want to be nice and do their jobs right.

Vibration between 50 & 70 mph

Do you experience vibration and rumbling between 50 and 70 mph?

No

Yes - V8/MT

Yes - V8/AT

Yes - V6/MT

Yes - V6/AT

Yes - EB/MT

Yes - EB/AT

shelbywannabe

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1024GT

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