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Apr 18, 2009 | 10:13 AM

genebob

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Questions

Hey guys! I'm new to this thread and hope you can help me out.

I bought an 05' F350 Crew Cab King Ranch with the 6.0. How do I tell which rear end I have? Also the exterior temperature is stuck at 50. I've been told it is probably the sensor, but where is it?

Also, now the back up sensors quit working. You can have the switch on, but when you shift into reverse it shuts off. Any ideas?

Thanks for your help in advance!

Apr 18, 2009 | 11:34 AM

powerstroke72

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Joined: Oct 2005

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From: SW Virginia

The temp sensor should be behind the grill. Check you VIN decal on the door. It should have the VIN and down on the lower right corner it should have a thing that says "axle" and below it will have a code like 37 or 3L or something like that. Go to this link in the tech folder:

https://www.ford-trucks.com/forums/4...lder_____.html

Go to post #9 by IB ADRIAN and you'll find the axle codes there. The codes in this post should be for '05+ trucks so yours should be there, not in the ones higher up on the page.

The reverse sensor thing could be one or more bad sensors but I'm not sure how to check them. Do a search on this forum though because it has been discussed several times and you should be able to find something.

Apr 18, 2009 | 08:11 PM

Greg B

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If it's not a dually, it's probably a 3.73:1 ratio. If it's a dually, it could be a 4.10:1 or 4.30:1 ratio. The VC label in the door jamb or on the edge of door will give you the code. If the code is all numbers, it's an open differential. If the code is a number and letter, it's a limited slip.

Apr 18, 2009 | 10:02 PM

420CREW

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Joined: Jan 2009

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From: GRAND RAPIDS

Great info this helps me as well

Apr 18, 2009 | 10:12 PM

powerstroke72

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Joined: Oct 2005

Posts: 24,308

Likes: 42

From: SW Virginia

Did a little digging and here are two links to threads on the reverse sensor issue. The one on the bottom seems to be the best solution to diagnosing and fixing.

https://www.ford-trucks.com/forums/6...se-sensor.html

https://www.ford-trucks.com/forums/4...p-sensors.html

Good luck.

Apr 19, 2009 | 12:40 AM

Konarain

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Joined: Mar 2009

Posts: 58

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From: Kona, Hawaii

Can you folks tell me why, if its bad to backup a short distance (not to tear up my road) I've stopped doing it 'cause it felt weird when I engaged, drove a half mile on grass (and a little rock) and then disengaged the hubs. I only backed up a short distance with one engaged!
Thanks and Aloha

Apr 19, 2009 | 02:41 AM

Monsta

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Joined: Oct 2001

Posts: 18,308

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From: Washington State

Brah...talk about one thread highjack!

Are you talking about backing up in 4WD? There's no problem in doing that. Backing up a trailer in 4LO is actually recommended. So backing in 4HI isn't anything. If it was, a lot of people who plow would be driving a different brand.

Locked in 4WD with one hub locked isn't a good thing really. Heck, that's pretty "par for the course" with ESOF!

But all the power will typically go to the wheel with the least resistance since you have a open diff up front. That wheel would be the one that is unlocked. This could create issues at the U-joint and the hub.

Why would you have only one hub locked?

So what cuz, you live Kona side?