Tow Haul not working - Ford Powerstroke Diesel Forum
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post #1 of 3 Old 05-19-2013, 01:01 PM Thread Starter
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Tow Haul not working

Tow haul isn't working on my 2008 F-250. Running an H&S tuner. If I push the button 20+ times, sometimes it will come on...

I read on another forum it's likely a broken wire in the shifter. Anyone else have this issue? Is it easy to fix?

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post #2 of 3 Old 05-19-2013, 03:51 PM
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It's likely in the shifter handle itself.

The older trucks used to rub the wires through at the bottom of the shifter. I've changed a couple of the late model shift handles, but the wiring or switch must have been defective in the lever itself, since there was no visible damage to the wiring that is exposed.

Get the wiring diagram and you will need to momentarily jumper the wiring at the column side of the harness to ensure that the circuit integrity is still there from the column to the PCM. Hope this helps.

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post #3 of 3 Old 05-19-2013, 05:38 PM Fanatic
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i have the same issue but if i put my truck in park, it works everytime. im thinking the wiring is chaffed or broken and when it park it makes contact again.

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