Weird sound in rear of car

[yaycandy]

At any speed i hear a wha wha wha wha wha wha wha sound in the rear. 2015 MY car is at 81k miles. Jacked it up a few months ago and havent been able to wiggle the rear wheels. But if i pull into my garage after a drive and go to the righy rear and push the car by the wheel it makes a weird clicky noise for a second and then i cant get it to do it again. Noticed it ever since i had that flat on the same wheel but never drove on it flat.

Ive just delt with the noise for awhile but id like to know what it is. Maybe its my tires. Its pretty annoying at highway speeds, even though its faint.

 

[SM105K]

Does the sound vary with speed?

 

[yaycandy]

Does the sound vary with speed?

Seems to follow speed. Rotors look fine. Rear pads are old though. No feel of it in brake pedal or steering wheel. Literally just a faint wah wah wah sound that goes with speed.

 

[SM105K]

Have you rotated your tires? From the rear to the front?

 

[yaycandy]

Have you rotated your tires? From the rear to the front?

Nope, 8k miles on them. Firestones, i think firehawk. Whatever is stock size replacement.

 

[yaycandy]

But its weird. I cant remember that noise before the tire when flat. And i got the tire repaired. I dont think a tire bacon would make a sound. Bacon=plug

 

[SM105K]

But its weird. I cant remember that noise before the tire when flat. And i got the tire repaired. I dont think a tire bacon would make a sound. Bacon=plug

Rotate them and see what happens. I chased sound for a month solid in another vehicle. Tread separated internally on one of the tires on one of the rears. When I moved it to the front, I felt it in the wheel. I knew something was goofy then.

 

[yaycandy]

Rotate them and see what happens. I chased sound for a month solid in another vehicle. Tread separated internally on one of the tires on one of the rears. When I moved it to the front, I felt it in the wheel. I knew something was goofy then.

Alright ill try that. In my life ive seen many big issues end up being caused by a small things. 81k, my car is driven hard and fast into turns usually. How are ford wheel bearings?

 

[SM105K]

Remarkably good, never replaced one on any Ford product I have owned. Now tires are another story....

 

[jman1200]

That sounds like a wheel bearing. I replaced one at around 220k km (~137 k miles). A friend of mine who owns a Taurus replaced both rear ones at similar mileage.

When it is a bearing, the noise usually changes when you do wide turns at cruising speeds.

 

[Johnbigdog]

If you have 4 jack stands, a friend and a stethoscope, or long screwdriver you can lift the car off the ground, drive it to see if you can hear the noise and use the stethoscope to listen to the wheel bearings to see if one is making the noise.

 

[yaycandy]

Ill figure it out someday. Hopefully its a bad ptu so i can get the pp one. Just run it till the noise turns into a new worse noise then fix it. I have other project cars about finished, not sure how much my 15’ sho will get driven this year.

 

[yaycandy]

Jacked rear up today. Left spins fine, right dosnt spin. Feels like brake is dragging or rotor is warped. Bearings feel good. I cant move anything and im probably strong enough to push the car of the jack if i tried.

 

[yaycandy]

Think i found the issue. Didnt think it would mess up the rotor over torquing the rim, i know it would stretch the stud threads. Did it by the book with a torque wrench and it doesnt seem to rub the back of the caliper anymore. Beats me man. Dosnt feel tight to me but its at torque spec now. Usually i do the german torque spec gootntight

 

[khunter]

Yup, Ford super, go the distance never fail.
I managed 35K on a front one.(wheel bearing)
My 90' Bronco has used up fewer pats than this thing,

 

[yaycandy]

Back wheel was on too tight. Took wheel off and torqued to a “light touch” 100ftlb. IMO. And its good now.

 

[luigisho]

My 90' Bronco has used up fewer pats than this thing,

That's an indictment. Those things were not known for reliability

 

[SM105K]

Didn't break down on OJ!

 

[luigisho]

They could only drive 35mph

 

[SM105K]

They could only drive 35mph

You just had to bring that up? Didn't you! LOL.