Rear noise when I stop

Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
I know it's hard to hear, I did my best, haha. I've checked wheel bearings and ball joints. I jacked it up by the control arms and wedged a pole underneath the tires and pressed upwards, and there was no noise or dramatic movement. I don't know how to test the sway bar links.

Also, if I come slowly to a stop I can avoid that noise, but when I let off the brakes it will do it.
Was this
answer
helpful?
Yes
No
Tuesday, March 24th, 2020 AT 5:34 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
That's why I'm thinking it's a bearing. Control arms can do that. Picture in your mind the rearward pressure on the front wheels/suspension when stopping. Then when you release the brake, it removes that. That's why I'm thinking it. Also, you are certain the calipers and caliper mounts are tight, correct? As far as the sway bars, take a pry bar and gently pry on them to see if there is an issue. Another thought is take a rubber mallet and tap on the it to see if you hear any noise.

Hang in there. We will figure it out.

Joe
Was this
answer
helpful?
Yes
No
Tuesday, March 24th, 2020 AT 8:07 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
DID you mean to say bushing or did you mean wheel bearing? Also if it means anything, I get a similar "boing" up and down vibration when I hit a manhole.
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 5:23 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
Based on hitting bumps, I wonder if it has to do with the strut plates. As far as bushings or wheel bearings, both should be checked.
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 9:04 AM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
Would the strut plates stick? It feels like something is sticking and that boom is the result of something springing back in place. Just a thought.
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 9:15 AM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
Here's something: a friend pulled up and down on the driveshaft and there's a similar noise/vibration, it seems like the driveshaft mount is letting it move up and down.
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 10:37 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
Are you referring to the universal joint? Take a look through this link and confirm it for me.

https://www.2carpros.com/articles/how-u-joints-work

Joe
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 3:57 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
No, the center support bearing, or the carrier bearing in the middle of the shaft. I can move the driveshaft an inch in any direction, apparently the rubber part is done, but the bearing itself is fine. Any thoughts?
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 4:24 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
That sounds like the problem. I have a feeling you will need to get the entire part. I don't believe you can get parts to it.

Please let me know if that takes care of the noise. I'm really interested in knowing.
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 4:51 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
Well, I'll have to find it. Might have to order directly from Ford.
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 4:58 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
Wow! I just tried to search for one. You may be right. Not even Dorman has one. I did a Google search for a drive shaft center bearing support, and it showed several. When I clicked on them, none fit your vehicle.

Let me know what you find.

Joe
Was this
answer
helpful?
Yes
No
Wednesday, March 25th, 2020 AT 11:04 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
I found that a front strut has a broken piece. But would this cause a noise like that or is it cosmetic? Hands down we know the center support bearing needs to be changed, but here's another idea.
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 5:08 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
Hi,

That looks like a dust cover. That shouldn't be causing a noise. It should be plastic.

Let me know.

Joe
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 5:55 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
Yes it's plastic. Didn't know if it's a cause for worry.

Also, what about the "slip bump" going around online? Isn't there a way to service the slip yoke?
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 6:00 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
Are you referring to the center bearing on the driveshaft? A slip joint is serviced by simply cleaning and greasing the joint. Is that what you mean?

Joe
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 6:02 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
I guess it's the same if this driveshaft can be taken apart, but I see people taking out the driveshaft and greasing the yoke at the transmission end.
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 6:07 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
Yes, that is different. There are splines on between the drive shaft and the transmission output shaft. I have never greased them because they are lubricated by ATF. That's the purpose of the tail shaft seal. It prevents oil from leaking.

The only thing there I would lubricate is the seal that the shaft goes into. Anytime you replace a seal, you should always apply a lubricant to the new seal to prevent damage.

Joe
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 6:19 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
Well I guess we're back at square one. I looked at my shaft and the sticker shows BL-34-4K145-CA, and I see there's one on eBay for like $530.00 or something. Yikes.
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 6:43 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 108,816 POSTS
OMG! Is that for the entire driveshaft assembly? That's crazy if it's just the carrier. If that is the case, start checking salvage yards. I'm sure you will find a good one for much less. Wow. I got entire good running vehicles for less than that. LOL
Was this
answer
helpful?
Yes
No
Thursday, March 26th, 2020 AT 8:25 PM
Tiny
CANNON1349
  • MECHANIC
  • 609 POSTS
For the entire assembly, yes. Or I could order it straight from Ford for $623.00. And there are no salvage yards near me with this truck or any like it. Yay!
Was this
answer
helpful?
Yes
No
Friday, March 27th, 2020 AT 6:07 AM

Please login or register to post a reply.

Sponsored links