Acceleration Vibration

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Sep 15, 2021 | 07:56 AM

Hopper123

Thread Starter

Cross-Country

Joined: Sep 2021

Posts: 80

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Acceleration Vibration

My 03 V10 has a vibe upon starting. It is worse when under load or starting to accelerate on a hill or from a 90 degree turn. Was moving its fine just from start to about 10-15 mph. It feels like it may be comming from the back.
What could possible causes be. Any feedback would be appreciated.

Sep 15, 2021 | 08:41 AM

Bigpipes 35

Cargo Master

Joined: Feb 2011

Posts: 3,450

Likes: 13

From: Forest lake minnesota

I had the exact same issue, most likely its the rear axle limited slip chattering. You could try replacing the fluid and adding friction modifier which didn't work on mine. Because my truck only sees pavement while pulling the camper I replaced the carrier with a open unit and problem solved for me.

Sep 15, 2021 | 01:21 PM

bajaphile

Laughing Gas

Joined: Dec 2019

Posts: 893

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From: San Diego, CA

Do you have any lift in the rear?

First thing I'd check is for any U-joint play by grabbing the driveshaft and seeing if you get any play there. Usually the rear most U-joint at the pinion flange is the one to go first. While your grabbing the driveshaft, check play at the carrier bearing as well.

Jack up the rear axle so the tires can rotate freely and check wheel bearing play/noise as well...

Sep 15, 2021 | 03:26 PM

Hopper123

Thread Starter

Cross-Country

Joined: Sep 2021

Posts: 80

Likes: 10

Thanks for the input I will be looking at it in more detail this weekend.
one other question if it is the non slip can I just replace it with a Detroit auto locker? I have them in my jeep and really like em. The ocasional clunking when I put it in drive or reverse doesn't bother me a bit. I would leave the front open dif.

Sep 16, 2021 | 09:10 AM

Bigpipes 35

Cargo Master

Joined: Feb 2011

Posts: 3,450

Likes: 13

From: Forest lake minnesota

If it turns out to be the carrier clutches then its not a non slip. As far as replacement you can go with what ever locker you chose.

Sep 16, 2021 | 12:23 PM

2004 F450

Tuned

Joined: Jan 2019

Posts: 328

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From: Southern California

Before you do anything to the rear end make sure you don't have one or more bad coils. Your at the age they start to fail.

Sep 16, 2021 | 01:27 PM

bajaphile

Laughing Gas

Joined: Dec 2019

Posts: 893

Likes: 255

From: San Diego, CA

Quote:

Originally Posted by Hopper123

The 2011+ Super Duty's came with an E-locker option. You can buy the carrier with pigtail for about $500. Swap over the ring gear and set the backlash, run a 12V (switched) source and you're done... (Obviously a lot of work but is what I plan on doing in the coming months, hopefully...)

I'm still not sold that it is your differential though (It is a possibility of course). Sounds more like driveshaft related or possibly wheel bearing... but hard to really diagnose without feeling, seeing/hearing it.