Whats up guys new to the forum i just recently got handed a 2005 ford f250 6.0 PSD from my older brother, new to the whole diesel game, well all of a sudden as i was driving down the road about 65 mph, trucks RPMS shoot to about 4K and tow haul light starts blinking as i start pulling over (still in drive of course) i realize i can't move anymore the trucks rpm just rev. In all gears it does not move i moved 1-3 D and R and nothing truck just revs. i had my father get under the truck as i shift from gear to gear and the linkage is moving back and forth on the transmission as i put it in reverse the reverse lights still pop on, I'm new to the diesel game and was just looking for any kind of help or info that people could give so thanks in advance if you have any help that would be great.

 

1. Please get your pops out from under the truck

2. Check fluid level.

 

lol pops is fine was under while i shifted only, fluid level was perfect

 

bump for help

 

Is possibly the transfer case in neutral?

 

You most likely have a smoked 4R100 (that's the model of trans in your rig). The blinking light is telling you there are trouble codes. You need to have the pending and present codes extracted from the TCM by a shop that has the Ford 4R100 software reader. A good HD truck trans shop will know what's up.
How many miles on the trans? Ever had a fluid/filter service? Inspect the fluid for level, color and smell.
Most people are unaware that in order to achieve 200-300K out of an automatic transmission the fluid and filter (if equipped) needs to be changed every 35-60K miles depending on how hard you use the truck.

 

​​​​​​​The OP has a 2005 6.0 truck, therefore, it has the 5R110.

 

Thanks for that clarification. Either way, the information is relevant. 05 must be the first year for the 5R110W Torqueshift?

 

2003 was the first year for the 5R110W TorqShift.

 

Thanks Mark
Steve