Transmission Issues

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Jan 25, 2019 | 03:58 PM

don berg

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Transmission Issues

I recently purchased a 2011 F259 Super Duty after having Dodge Rams for a number of years.

This morning, I slid a little so I put it in 4wd and it wouldn't go in. Then it wouldn't shift at all, into forward or reverse or even park. Just like it was in neutral. Finally I got it back into park but it still won't go into 4wd.

Any ideas?

Jan 25, 2019 | 04:38 PM

Mark Kovalsky

Frmr Ford Trans Engr

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From: SE Florida

My idea is that it isn't a transmission issue, it's a transfer case issue.

Jan 27, 2019 | 10:47 AM

don berg

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I think you're right. There seemed to be no mechanical connection between the shifting lever and the transmission. This all started when I tried to put it in 4WD. The only connection seemed to be that, when I put it in park, it would grind. When I shut the engine off, of course, it would stop but then park would not hold. I put the emergency brake on and after sitting for a few minutes everything seemed to work with the exception of 4WD. I purchased the truck two weeks ago and have an appointment with them tomorrow. I spoke with the service man and he seemed to have no idea what was wrong so I will definitely mention your theory to him. I want to thank you for your input as it makes sense. Will let you know what they find. On this truck the transfer case is electronically engaged.

Jan 29, 2019 | 04:40 PM

don berg

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I called the service department and they informed me that the transfer case "brain" had to reset itself so when I shut the vehicle off, that caused it to start working again. Hopefully they are correct. However, the check engine light was on and they informed me that the fuel tank had sucked itself in. What would cause that? Since it's a sealed system would a plugged return line cause this? Anyone have any ideas?

Feb 2, 2019 | 05:39 PM

cjssr

Mountain Pass

Joined: Aug 2014

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Diesel tanks vent to atmosphere so the vent line has to be plugged up for this to happen. Had it happen once on a MB diesel with vent line packed with mud. Crushed the tank.