5.0L V8 Technical Discussions Any questions about the 'Coyote' engine, transmission, exhaust, tuners/CAI, or gearing can be asked here!

Noise at speed from Coyote

Old 09-17-2011, 09:52 AM
5th Gear Member
Thread Starter
JIM5.0's Avatar
Join Date: Jul 2010
Location: Texas
Posts: 4,404
Default Noise at speed from Coyote

I just hit 20K miles. It makes a noise something like this now.

What could this noise be?
I am thinking it could be the tires (PNeroZero, stock from the dealer).
Or it could be the rear gears losing their proper mesh.
Maybe a wheel bearing?

Anyone know for sure what this sound is? If you have answers, let me know what it is so I can take it in and have it fixed.
JIM5.0 is offline  
Old 09-18-2011, 12:59 AM
3rd Gear Member
parchisi's Avatar
Join Date: Jun 2010
Location: New Mexico...FML
Posts: 599

Does it sound warbly like that? Or is it just the video? Sounds like it increases with speed, not engine RPM. Would be strange for a wheel bearing to start going out at 20k, if it was defective I would think it would be making noise sooner, unless somehow it got contaminated. If you can pinpoint if the sound is coming from the rear, I'd guess its the rear gears. Just me spitballin' though, since no one else has responded yet.
parchisi is offline  
Old 09-18-2011, 02:34 AM
5th Gear Member
Thread Starter
JIM5.0's Avatar
Join Date: Jul 2010
Location: Texas
Posts: 4,404

I took a 100mile trip back home today, and yeah, I listened closely, and it did have a warble to it.

I am going to put the rear end up on jacks tomorrow and have a peek at the wheels. I just hope it is not as bad as this:

If it is the bearings, I will take it in for warranty.
JIM5.0 is offline  
Old 09-18-2011, 10:45 AM
5th Gear Member
gothand's Avatar
Join Date: Nov 2006
Location: North Fulton, GA
Posts: 2,287

Rotate the tires as shown in the owner's manual and see if you notice any difference. With the long oil change interval specified for these cars, you should consider rotating the tires with every change. FWIW, I have 17k miles, have rotated the tires twice and don't have any funky noises.
gothand is offline  
Old 09-18-2011, 04:30 PM
2nd Gear Member
scottybaccus's Avatar
Join Date: Jun 2011
Location: Texas
Posts: 486

You should be taking it in for warranty anyway. Why spend your time self diagnosing a car with only 20k on it.

"Hey Mr. Service Mgr! My 20k mile car just started making this abnormal sound. Make it right."

See how easy that is?
scottybaccus is offline  
Old 09-18-2011, 05:08 PM
4th Gear Member
aaquib1992's Avatar
Join Date: Nov 2010
Location: Indiana
Posts: 1,717

My first guess would be wheel bearings too. But maybe check the lugs on the wheels? I know it's obvious and I don't mean to insult anyone's intelligence but have you checked the torque on those?

When I first got my car (was still under warranty thank god) I had a terrible wobble too. After having the dealer look at it 4(!!) separate times, they finally took the tires off and low and behold, the TPMS band had snapped and the remains were rolling around inside one of the tires.

They rebalanced and remounted everything then had to align the car again...

Good luck, and I hope everything works out for you!
aaquib1992 is offline  
Old 09-19-2011, 04:25 PM
Mishri's Avatar
Join Date: Nov 2007
Location: Great Falls, MT
Posts: 3,780

i dont think its the rear gears. mine came with a pretty loud whine from the factory, put the new 4.10s in and it's really quiet now. had a good installer. but the whine sounds like a whirring sound, not like that. sounds more like tire noise to me.

or maybe you have one of these:

really I couldn't be certain what sound you are referring to.. you could disconnect/plug your sound tube to elminate engine noise. do you have aftermarket exhaust? sounds kind of loud..
Mishri is offline  
Old 09-25-2011, 03:06 AM
5th Gear Member
Thread Starter
JIM5.0's Avatar
Join Date: Jul 2010
Location: Texas
Posts: 4,404

Just an update: The dealer techs are useless. We took it for a ride on the freeway and all the idiot said was "That's normal." He said it is normal drive train noise, even though I stressed that it did not sound like that for the 1st 20K miles. He also said it was my tires and asked me if I rotate them. I showed him shop job receipts of tire rotation jobs.

"That's normal" seems like their default answer for everything. If my car exploded in a massive bang and there was nothing left but bits, I bet the bastard would say it was normal for that too.
JIM5.0 is offline  
Old 09-25-2011, 08:08 PM
2nd Gear Member
Join Date: Feb 2006
Posts: 223

It does sound a bit like the noise I would get on my Jeep tires from uneven wear. The big tires were really hard to keep balanced. I've never had that issue with the Mustang or any other street only car.
austijc is offline  
Old 09-28-2011, 10:46 AM
4th Gear Member
AzPete's Avatar
Join Date: Aug 2008
Location: Panama City, FL
Posts: 1,214

That sounds like tire noise to me. Have you had the tires checked for tread separation? Is it possible to swap/borrow tires and wheels from a friend to see if it changes? HAve you put it on a lift and rotated all the parts to listen?

I agree, Ford should do more than they did. Maybe it is time for a different dealer....
AzPete is offline  
Related Topics
Thread Starter
Last Post
2005-2014 Mustangs
03-24-2017 03:38 AM
Granatelli Sales
GT S197 General Discussion
03-25-2016 08:01 PM
2005-2014 Mustangs
10-01-2015 11:16 AM
2005-2014 Mustangs
09-24-2015 09:06 PM

Thread Tools
Search this Thread
Quick Reply: Noise at speed from Coyote

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to and affiliated sites.