2006 F250 Tow/haul and no gears but have pressure on 5R110W - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 12 (permalink) Old 12-24-2014, 11:52 AM Thread Starter
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2006 F250 Tow/haul and no gears but have pressure on 5R110W

Hey all I was driving down the highway and the truck was in overdrive and under a load passing at about 20lbs boost and all of the sudden I lost all power, felt truck shake a little. The tow/haul light is flashing and got only one code P0730. The truck won't go into gear in either forward or reverse now, had it towed home and put a pressure gauge on it and found about 100psi at idle In neutral, in reverse and forward I got strange readings the pressure goes way up momentarily then down to 100psi, and increments back up to over 500 psi and seems to stay there but neither forward or reverse engage. I have no clue what could be wrong at this point. I am attaching a video so you guys can see what I'm talking about. Any help would be totally appreciated. Thanks for looking guys.


2006 f250 5r110 transmission failure with P0730 - YouTube
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post #2 of 12 (permalink) Old 12-24-2014, 12:08 PM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

I See you found the PSN welcome !
I hope someone here can dial you in
maybe Mark K will swing by and give some Holiday Help ;-)

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post #3 of 12 (permalink) Old 12-24-2014, 01:40 PM Thread Starter
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

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Originally Posted by Zmann View Post
I See you found the PSN welcome !
I hope someone here can dial you in
maybe Mark K will swing by and give some Holiday Help ;-)
Thanks Zmann, i sure hope so.
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post #4 of 12 (permalink) Old 12-24-2014, 02:00 PM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

unless He is playing Santa Clause today at the local mall ?

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post #5 of 12 (permalink) Old 12-24-2014, 02:21 PM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

Ho, ho, ho, no. I'm not playing Santa this year.

Something mechanical broke inside the trans. I don't know exactly what broke, you'll find that out when the trans is torn down.

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post #6 of 12 (permalink) Old 12-24-2014, 04:16 PM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W


Merry Christmas

so My wild arse guess based soley on the single code on another forum that a solenoid may not be in the proper position was totally wrong ( I validated the guess with a disclaimer " I don't know anything" lol)

glad i pointed him here ;-) even if it was for bad news

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post #7 of 12 (permalink) Old 12-25-2014, 03:33 AM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

Where are you located?

Definitely sounds like a large mechanical failure which will require disassembly.

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post #8 of 12 (permalink) Old 01-02-2015, 06:44 PM Thread Starter
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

Ok so my trans guy is still on vacation so I pulled out my Auto Enginuity and monitored this below, any ideas????

P0730 overdrive clutch failed off
Transmission over temp lockup mode faulted

In park sol A = 49psi
In reverse sol A = 203 psi
In drive sol A = 125 psi

In rev Sol E = 299.93 psi

In park
Inputs shaft speed = 655 rpm
Intermediate shaft speed = 445
Output shaft speed = 0

Reverse
Inputs shaft speed = 655 rpm
Intermediate shaft speed = 0
Output shaft reliable faulted giving throttle

2006 F250 Lariat
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post #9 of 12 (permalink) Old 01-02-2015, 10:11 PM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

Those pressures don't mean anything. There are no pressure sensors in the transmission. Those values are what the PCM wants for pressure, not what is really happening. Have you verified that there really is pressure?

Mark
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post #10 of 12 (permalink) Old 01-03-2015, 05:19 PM
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Re: 2006 F250 Tow/haul and no gears but have pressure on 5R110W

Sent you a PM.

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