Rear wheel howl when backing out of garage in the morning

[Gavin Allan]

Ever since my Ford dealer replaced the rear brake shoes on my 2010 ltd 4x4, I get a loud howl out of the rear end area when backing out of the garage each morning. Sometimes the noise continues for about the first 25 feet when I put it in drive from backing out. There doesn't seem to be any brake grabbing. Applying the brakes and releasing doesn't seem to make any difference. Applying the parking brake and releasing doesn't seem to make any difference.



I will probably take it back in and let the dealer deal with it, but I hate the thought of them coming up with more parts to replace. My Trac has 37,000 miles on it- the dealer said the rear brake pads were worn very strangely and an angle on both sides- that is why they replaced them a few months ago. Ever since they were replaced, I get this howl in the morning about 3/4 times. Never does it warm or any other time.

 

[Igor Smetaniuk]

Gavin,



Did you check to see if your neighbors dog is stuck under there after backing over him? :grin:

 

[Richard L]

Gavin,

Hmmm? sounds like the shop took some short-cuts doing your brake job. I suspect that they may have just slapped in some new pads.



I think you may have a problem with sticking calipers. Either they just pushed the pistons back into the calipers which positions the pistons over any pitting in the caliper bores, or they failed to clean and lube the slides, or where the pads contact the calipers.



I would take it back and have them fix it....who knows? They may have installed the wrong pads or did not install them correctly.



Yes, even Ford Dealers screw up simple things like brake jobs. :cry:



...Rich

 

[swshawaii]

Ditto Richard L. Dealer performed a quick "pad slap" without cleaning and lubing contact points. Amazing how a little brake lube will silence noise.

 

[Todd Z]

Almost bet the Caliper slides are frozen and rusted.



If not there also was a design change in the pads, The new design has an integral spring on the bottom of the outside pad that rides the slide holding the assembly Up.



IF not maybe a hub bearing is going and you hear it echo in the garage.



Todd Z

 

[Gavin Allan]

Thanks for the advice. I'm taking it back in! It helps to have some backrground info in case they try to blow some smoke up my tailpipe.

:banana:

 

[Gavin Allan]

Took it in and dropped it off at Quick Lane this morning. Service writer was amazing- started telling me that the noise was probably normal and there would be nothing they could do to repair it. He said they all do it first thing in the morning. Caused by light coating of rust on the rotors that forms at night in the garage. Said they would pull it apart and check it just to make sure, but that I should be prepared to just learn to live with it.

I was so impressed that he could tell that much just by talking to me and without even looking at my truck that was parked out in the lot. Ford finds some real talented folks these days! :angry:

 

[Gavin Allan]

Just got off the phone with the service writer. They pulled the rear wheels and looked everything over. The newly replaced motorcraft brake pads looked kind of "funny" and had some cracks in the pad material. So they replaced the pads (warranty) and they think everything will be just fine now.



I guess we shall see....

 

[swshawaii]

If not there also was a design change in the pads, The new design has an integral spring on the bottom of the outside pad that rides the slide holding the assembly Up.

Sounds like Todd Z called it.... again. :supercool:

 

[blksn8k]

Look anything like this? That spring also keeps the pads from rattling around inside the caliper.



[Broken External Image]:

 

[swshawaii]

Here's the TSB for the 2007-08 ST rear brake rattle, Gavin has a 2010.

 

[Jackson Ellis]

Interested in hearing (pun intended) how your brakes are doing now Gavin. Overnight rust on the rotors is a real thing, but don't know if it's all or part of the cause of the noise you're hearing. I've seen lots of posts over the years about brakes that make noise until they're applied the first time each day that have been described as howling, squeaking, whirring, moaning, etc. Sometimes they get attributed to rust on the rotors. There's a clean spot where the pads hovered, so you can get some weird sounds that change with speed until you rub the rust off.



swshawaii - my 2010 trac's rear brakes rattle like your posted TSB mentions. It's not everyday, but when it happens, light pressure on the brake pedal eliminates it. Passengers rarely even notice it. My wife's Infiniti 2007 QX-56 did it on all four corners, all the time, loudly. Light pressure on the pedal always made it go away. Other than that rattle, the Infiniti was so quiet you could probably hear a mouse walking on the dash, but it sounded like you were hauling a trailer of tin cans behind you on a very rough and slow-pace road.

 

[Gavin Allan]

I am thinking a broken return spring on the parking brake might be the problem. No noise this morning, though.