Stuck in 4low - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 08-18-2013, 01:53 PM Thread Starter
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Stuck in 4low

Went shooting last night. Had my truck in 4low, went to switch to 4hi and nothing. Have checked the fuses and relays. Banged on the actuator and nothing. Any suggestions? Truck is sitting at the dealer right now. Thanks
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post #2 of 7 Old 08-18-2013, 01:55 PM
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Have you checked vacuum hoses and tried to manually lock and unlock the hubs


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post #3 of 7 Old 08-18-2013, 01:55 PM
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Just to make sure the truck is in neutral when trying.
I have found that my truck is much more willing to shift out if low if I attempt to shift it out from a slow roll <5 mph


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post #4 of 7 Old 08-18-2013, 02:05 PM
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This is from another site hope it helps. Another person had the same issue and said it was the relays next to the battery.


I'm not 100% sure, but it sounds like the electric motor in the transfer case is failing to operate. It sounds like you should have relieved any bind on the drivetrain. If you take it in, the tech. will most likely look to see if the motor is getting the signal from the switch and also if the motor is trying to turn the selector cam in the transfer case. Keep in mind that the computer will be "doing its thing" for up to 20 seconds after the driver turns the ESOF selector switch. Switching to another selection before this time is up will cause confusion for the computer. Try placing the switch in 4LO and driving for a bit (make sure it's longer than 20 seconds or so). Then, while slowing down, place the tranny into neutral (while the truck is still rolling) and place your foot on the brake just enough to turn on the brake lights (but let the truck continue to roll) and after you have pressed on the brake, turn the selector knob to 4HI. I remember reading that the transfer case will try and begin operation with the vehicle moving at 3 MPH or less, as long as the other two conditions were met (tranny in neutral and service brake slightly depressed). Even in 4 HI, you could still get the truck to a dealership w/o having to tow. I hope this helps.


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post #5 of 7 Old 08-18-2013, 02:10 PM Thread Starter
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Thank you for the quick replies. Hoses have been checked, tried the rolling method and no luck.
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post #6 of 7 Old 08-19-2013, 05:39 AM
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I'm not sure how the 4wd low works on these trucks, but I had a Durango that you sometimes had to go in reverse for 20-50' after switching out of 4wd low to release the bind.

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post #7 of 7 Old 08-20-2013, 06:35 PM Thread Starter
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Just a quick update. Dealer called Monday morning and said that the truck shifted into 2hi. I went over Sunday and did a repeat of the night before. Pretty sure the motor is freezing up, since everything looked fine.
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