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 > Can you name that sound (squeaking)?

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SJ-Chris

San Jose, Ca

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Posted: 11/17/22 04:28pm Link  |  Quote  |  Print  |  Notify Moderator

I have a 2013 Coachman 210qb Leprechaun Class C. It has a Ford v10 e350 Super Duty engine. It has 111k miles on it and it hasn't been giving me any issues until now. It has recently started making a squeaking/rubbing noise that I cannot identify. Looking for suggestions....


Here are the symptoms.... After sitting parked for many hours/overnight, when I start it up and start driving there is a rubbing/squeaking noise that starts at about 15mph and continues up to about 40mph. Once up to about 20mph, the noise happens while accelerating, and/or while coasting, and/or while braking. It doesn't matter what gear it is in. The sound stays constant between shifting gears and also if applying a slight pressure on the brakes. After about 1.5 miles of driving, the sound goes away and it doesn't happen again until the car has been sitting parked for many hours (or overnight).


It sounds like something is possibly rubbing (brakes??) during this time and I suspect it has something to do with the rotation of one or more of the wheels. To me, the squeaking noise sounds like it might be related to the tires rotating (...the noise is kind of rhythmic and the speed of it seems related to how fast the car is going). Maybe it goes away because something has warmed up after 1.5 miles???


I did one additional test. I let the RV sit overnight. In the morning, I turned on the car and let it idle for 10 minutes so that the ENGINE itself was warmed up. I thought maybe if the sound is going away once some component of the ENGINE is warming up that I would be able to do this test (get the engine warm and THEN drive it...maybe I wouldn't hear the noise). But when I drove it I got the same noise (rubbing/squeaking) starting at about 15mph for about 1.5 miles and then it once again went away.


Here is a video where you can hear the noise. Turn up your speaker. In this video, it starts at about 2 seconds and goes away at around 8-12 seconds.

https://www.youtube.com/watch?v=XZz_NoQntB0
(Note: The "D" (drive) flashing in the video isn't real...it doesn't flash/blink like that. For some reason it just looks that way in the video)


Here is another video where you can hear the rubbing/squeak louder right up to about the 20 second mark.
https://www.youtube.com/shorts/2VmWOJROS-s

Any thoughts?

A friend of mine who is mechanically inclined thought it might be the "indicator clips"(?) of the brake pads making the rubbing/squeaking noise. I'm not convinced that is the issue since the noise is happening NOT because I am braking...it just starts making that noise once the vehicle goes from being cold started and then gets to about 15mph. Could indicator clips cause/behave something like this?

"indicator clips" are the small clips on the brake pads that will hit the rotors (and make noise) before your brake pads get too low.

Let me know what you think.

Thanks!
Chris


San Jose, CA
Own two 2015 Thor Majestic 28a Class C RVs

enblethen

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Posted: 11/17/22 04:41pm Link  |  Quote  |  Print  |  Notify Moderator

Doesn't change with engine RPM so it must be in drive train. I would be checking center support bearing. have you joints checked as well.
It could be a wear indicator for brakes, but doubt it.


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QCMan

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Posted: 11/17/22 06:26pm Link  |  Quote  |  Print  |  Notify Moderator

I would vote for someplace in the driveshaft. Support bearings or u-joints will sound like that.


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midnightsadie

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Posted: 11/17/22 06:36pm Link  |  Quote  |  Print  |  Notify Moderator

brake pads have a thing called a noise maker lets you know your pads or shoes need checked.or a caliber is stuck and dragging.

stickdog

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Posted: 11/17/22 07:55pm Link  |  Quote  |  Print  |  Notify Moderator

Mom would turn the radio up. Worked every time.


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time2roll

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Posted: 11/17/22 09:21pm Link  |  Quote  |  Print  |  Notify Moderator

Sounds more like drum brakes than disks. What is in the rear? My guess is the parking brake does not get used enough. Or maybe too much and the shoes are shot.

Can you try lightly applying the parking brake while driving? See if the pitch changes.

Disk wear indicators would change pitch as the service brakes were applied.


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bobndot

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Posted: 11/17/22 09:47pm Link  |  Quote  |  Print  |  Notify Moderator

If not the brakes check the carrier bearing.

SJ-Chris

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Posted: 11/17/22 10:33pm Link  |  Quote  |  Print  |  Notify Moderator

time2roll wrote:

Sounds more like drum brakes than disks. What is in the rear? My guess is the parking brake does not get used enough. Or maybe too much and the shoes are shot.

Can you try lightly applying the parking brake while driving? See if the pitch changes.

Disk wear indicators would change pitch as the service brakes were applied.


I believe it has disk breaks front and back. Not 100% sure, but that is what someone told me after taking a quick look.

I hadn't thought about the parking break. I will play around with it before driving and then while driving to see if it has an impact on the noise. Thanks!

-Chris

SJ-Chris

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Posted: 11/17/22 10:35pm Link  |  Quote  |  Print  |  Notify Moderator

bobndot wrote:

If not the brakes check the carrier bearing.


Thanks for your suggestion.

I wasn't sure what a carrier bearing is. So I looked it up. I also found this video on youtube:

https://www.youtube.com/watch?v=4_7woYnE0zs

It doesn't seem like this is my problem for a couple of reasons.
1) It doesn't sound like that.
2) It only starts once the RV gets up to about 15mph.
3) After 1.5 miles it seems to go away. Drove it for 120 miles recently and didn't hear it again after 1.5 miles.

-Chris

* This post was edited 11/18/22 09:44am by SJ-Chris *

midnightsadie

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Posted: 11/18/22 04:34am Link  |  Quote  |  Print  |  Notify Moderator

just for fun,drive it down the free way about ten miles nice no stop drive, get out and touch the front rims see if one is hotter than the other. that would tell you your brakes on that side are dragging.

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