Pop noise, possible axle issue?

Tiny
CHRIS001
  • MEMBER
  • 2002 FORD F-150
  • 4.5L
  • V8
  • 4WD
  • AUTOMATIC
  • 238,000 MILES
I had my axle replaced because it was worn. My axles have been replaced but when I put the truck in reverse while engine is running no movement fine.I give it gas I hear a pop up front only in reverse it does it once then no more I would say it sounded like an axle, but they all been replaced what could still make it pop like that?
Friday, May 12th, 2023 AT 5:54 PM

3 Replies

Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,453 POSTS
They replaced the rear axles? Was one broken? You may have a spider gear inside the differential that has let go. To be sure, have a helper put the truck in gear with their foot on the brake while you look under the truck, if the rear driveshaft spins, then the differential is to blame.

Here is a video on how to remove the rear cover for inspection in case you need it:

https://youtu.be/v1hjDkQb41I

Let us know what happens and please upload pictures or videos of the problem so we can see what's going on.
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Saturday, May 13th, 2023 AT 10:43 AM
Tiny
CHRIS001
  • MEMBER
  • 44 POSTS
Spider gear is locked in the back. Also, the pop was caused by brakes getting hot needing new lines. Thanks, I appreciate your response!
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Sunday, May 14th, 2023 AT 5:03 AM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 51,453 POSTS
Thanks for letting us know, we are here to help, please use 2CarPros anytime.
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Monday, May 15th, 2023 AT 9:49 AM

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