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Rear End Squeak

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Old Sep 2, 2016 | 03:18 PM
  #1  
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Rear End Squeak

71' F100 2wd w/ FlexoMatic Rear Suspension

Just had a local driveline shop replace all rear suspension bushings, freshen up the leaf springs and install new KYB rear shocks.

I had this squeak before the rear suspension work and thought it was due to dry bushings but it is still present.
It is a high pitch squeak, and I simply can't locate it while driving.

Any ideas where to look?

Thanks guys,
Trever
 
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Old Sep 2, 2016 | 03:30 PM
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It's possible that the individual springs are rubbing against each other causing a squeaking noise. Ford at one time sold wax coated inserts to solve this problem.
 
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Old Sep 2, 2016 | 04:05 PM
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When is the squeak happening?

It is most likely the springs rubbing themselves.
 
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Old Sep 2, 2016 | 04:14 PM
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Ha. Lube the tailgate hinge n the tailgate's rubber bumpers... !
 
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Old Sep 2, 2016 | 04:33 PM
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Originally Posted by HIO Silver
Ha. Lube the tailgate hinge n the tailgate's rubber bumpers... !
AH HA! Good call hio. Most people forget about that aspect. I did.
 
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Old Sep 2, 2016 | 04:39 PM
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All great ideas guys.
Due to wind, road and exhaust noise, the squeak is most prevalent at lower speeds while traveling over small bumps.

If it is the leaf springs what lubricant would you recommend using?

Trever
 
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Old Sep 2, 2016 | 04:46 PM
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Originally Posted by 351Cleveland C4
AH HA! Good call hio. Most people forget about that aspect. I did.
I have four trucks to keep me reminded.

Originally Posted by treverd
All great ideas guys.
Due to wind, road and exhaust noise, the squeak is most prevalent at lower speeds while traveling over small bumps.

If it is the leaf springs what lubricant would you recommend using?

Trever
PB blaster... but only on one leaf pack. If after driving the squeak is still present, then shoot the other leaf pack.

Are you sure it's not something stupid like an EBrake cable rubbing on a shock? Or a loose bed bolt? I'd crawl under and look/feel.for something loose or out of position.
 
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Old Sep 2, 2016 | 05:34 PM
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While you're under there check the spare tire and it's air pressure.
 
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Old Sep 3, 2016 | 07:41 PM
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Squeak

A friend of mine had a squeak caused by the front of the bed that was touching the cab.
 
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Old Sep 4, 2016 | 03:00 PM
  #10  
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Because of you guys the squeak was found and eliminated. After looking to see if it was the rear bumper, I grabbed onto the top of the tailgate and firmly pushed back and forth. There it was!
The passenger side of the tailgate is tight as can be, but the driver side has a slight amount of play. This is what was causing the constant squeaking that could be heard at low speeds. For now I sprayed it down with some PB blaster and will start working on getting it to tighten up.

An a related note I am getting some sounds from the rear drums, sounds like they may be dragging.
 
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Old Sep 4, 2016 | 05:05 PM
  #11  
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Originally Posted by treverd
Because of you guys the squeak was found and eliminated. After looking to see if it was the rear bumper, I grabbed onto the top of the tailgate and firmly pushed back and forth. There it was!

The passenger side of the tailgate is tight as can be, but the driver side has a slight amount of play. This is what was causing the constant squeaking that could be heard at low speeds. For now I sprayed it down with some PB blaster and will start working on getting it to tighten up.

An a related note I am getting some sounds from the rear drums, sounds like they may be dragging.
LOL.... Welcome to the country club.

Edit: Google 'Hougen Slick Stick'. It's a good lube for latches, hinges, and rubber bumpers. It feels like a wax... and also won't stain your clothes.
 
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Old Sep 11, 2016 | 06:20 PM
  #12  
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Originally Posted by treverd
Because of you guys the squeak was found and eliminated. After looking to see if it was the rear bumper, I grabbed onto the top of the tailgate and firmly pushed back and forth. There it was!
The passenger side of the tailgate is tight as can be, but the driver side has a slight amount of play. This is what was causing the constant squeaking that could be heard at low speeds. For now I sprayed it down with some PB blaster and will start working on getting it to tighten up.

An a related note I am getting some sounds from the rear drums, sounds like they may be dragging.
I have the same squeak, it appears that the rubber bumper at the top of the tailgate is worn down. Mine is on the passenger side. What is the solution, replacing the rubber stop? Can the tailgate be adjusted?
 
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Old Sep 11, 2016 | 06:21 PM
  #13  
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Replace the rubber. No real adjustment possible in the gate.
 
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Old Sep 11, 2016 | 06:25 PM
  #14  
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From: Bellevue
Tailgate Rubber?

Arnold,
Now that you mention that, I am not sure I have any rubber bumpers at all. The tail gate does make a good amount of banging noise going over speed bumps, no squeak anymore. I need to look into getting these bumpers.

Hopefully the replacement bumpers come with mounting hardware.

Trever
 
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Old Sep 11, 2016 | 06:30 PM
  #15  
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From: Bellevue
It appears DC list's two rubber bumpers (round insert and long strip). Which one correct?

Long Strip Type
Tailgate Bumper | Dennis Carpenter Ford Restoration Parts
Round Insert Type
Tailgate Bumper | Dennis Carpenter Ford Restoration Parts
 
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