Speedometer works when it wants

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Feb 10, 2023 | 12:00 PM

marbern11

Thread Starter

3rd Gear

Joined: Feb 2023

Posts: 3

Likes: 1

Speedometer works when it wants

So I have an 05 f250 with a 6.0 4x4 I been having issues with my speedometer. Already changed three speed sensors two on the trans and one on the rear end. It works for a while then it just puts my truck into limp mode. Speedometer is going crazy then Stops working. Need help anyone know what I can do next?

Feb 10, 2023 | 03:40 PM

Djosbun

Fleet Mechanic

Joined: Oct 2017

Posts: 1,704

Likes: 164

From: Southwest Ohio

Instrument cluster needs repair most likely. Circuit Board Medics is who you’ll want to use. It’s a common failure point IF you have diagnosed the issue correctly.

— Dave

Feb 10, 2023 | 04:04 PM

Nosferatu

5th Gear

Joined: Jun 2013

Posts: 5

Likes: 0

Have you tried smacking the top of the dash? Worked on my Jeep.

Feb 10, 2023 | 06:44 PM

marbern11

Thread Starter

3rd Gear

Joined: Feb 2023

Posts: 3

Likes: 1

Quote:

Originally Posted by Djosbun

Instrument cluster needs repair most likely. Circuit Board Medics is who you’ll want to use. It’s a common failure point IF you have diagnosed the issue correctly.

— Dave

would this cause the truck to throw the codes for speed sensor?

Feb 10, 2023 | 06:44 PM

marbern11

Thread Starter

3rd Gear

Joined: Feb 2023

Posts: 3

Likes: 1

Quote:

Originally Posted by Nosferatu

Have you tried smacking the top of the dash? Worked on my Jeep.

actually I have and nothing.

Feb 11, 2023 | 11:54 PM

p38fln

Mountain Pass

Joined: Jul 2018

Posts: 137

Likes: 29

From: Northern MN

Mine just has the dash go completely dead other than the battery charge and SRS warning lights which function normally. The previous owner popped the trim ring off and showed me that if you grab the right hand wiring harness on top of the instrument cluster and pull down on it like you're trying to break it you can at least get it out of limp mode and can usually convince the speedometer to kick on for a few hours. Mine won't go into limp mode as long as I can get the dash to kick on for even a second after starting the engine.