2005 - 2014 MustangsDiscussions on the latest S197 model Mustangs from Ford.
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After having my 3.73s installed, I have a vibration that I get in my car when on the highway at 60-65 mph. The vibration gets louder with no load on the drivetrain (coasting down, no brakes, no throttle). It occurs in 3rd, 4th, or 5th gear, but is most noticeable in 5th due to the exhaust tone being lower. The vibration sounds like a droning noise, sort of like a deep sub woofer just playing a really low tone noise. Any ideas on what to check?
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I would check to see that the driveshaft was re-installed nice and tight, check that there is no play in the pinion shaft by pulling back and forth on it. If so, the pinion nut was'nt fully tightened back down. Make sure it is full of gear oil too. Its possible the pinion angle is off. also, i would make sure all the control arms are fully tightened.
Hmmmmm, were all the disconnected driveshaft flanges
reinstalled like they were originally in respect to the way
they were clocked?
A line drawn down the driveshaft/s and flanges before disassembly
of the driveshaft components is mandatory for vibration free operation.
If this was not done, try rotating the disconnected flange 180 degrees
and see if the vibs go away.
Its really a cra* shoot to get it back to the OEM orientation if too many
things were reinstalled without the reference marks to get it back to OEM.
i have a whining sound in my and especially in 5th at lower rpms
06 GT steeda cold air, steeda underdrive pulleys, throttle body spacer, Xpipe no cats, flowmasters 4.10s, hurst short throw, eibach springs, panhard bar, front lightweight radiator support
run the car on the hoist and see if the driveshaft wobbles. ive had garter springs fall of on the pinion seal when tapping it in. causes the flange to wobble and cause a vibration. Or the pinion nut is not tight enough.
Yeah I have also had problems with pretty much every mod I've done. However, I was able to track the other problems down and fix them. Vibrations are tough because they transmit through everything so its hard to find the source.
My installer told me the car has a slight vibration at 70mph after the 4.10 install. He told Mishri the same thing. I haven't noticed it yet but Mishri has felt it. In any case, we were told by the installer that an aftermarket driveshaft (AL) would take care of it. Another user here, Kolb02, had the same installer and issue and once he put his dynatech driveshaft in the problem disappeared.
so matt, your problem showed up AFTER the driveshaft install? I would replace my driveshaft with a one piece if i knew it would get rid of the noise. I have heard a lot of horror stories on this forum about vibrations after driveshaft installs and the last thing i want to do is make it worse.
Damn, every time I think I am ready to swap to 4.10 gears, I read a story like this. Makes me think my 3.55s are OK.
I hear ya. I'm so pissed about my 3.31 to 3.73 gear install, if I ever dreamed it would be such a nightmare as it wound up being, I never would have done it. 2 installers, and two gearsets later, same damn howling noise. The second time I took it to a Ford dealer, an FRPP rep, SVT/Motorsports certified dealer. They swea upside down and sideways they did it right, 100% textbook, and they're baffled as to why I still get the howl (whine, butit sounds more like a howling) at 60 to 40mph on coast. I am going to go toa third installer, and hopefor the best. The majority of peoplesay that there should be no noise at all, its a bad install, period. I've also heard other say with the S197's sometimeseven on a correctistall, theres sometimes a noise. I wish I never did it, the jump in gear ratio is barely worth it, and I'm over a grand in the hole, and my problem is not solved yet.
Sorry to hijack, just needed to vent! But your thread is he reason why I'd never get a 1 pc DS, in fact, I'm done with mods, DONE!
2006 Satin Silver GT automatic. Original owner, 104,000 miles
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