Brief summary 2009 screw 5.4. Turning 56k maybe tomorrow, if I can drive it.

Only cold related problem I have ever had until winter 2013 was a dead battery. Winter 13 brought some weird idle problems which disappeared in summer of 14. Miraculously they reappeared late fall 2014. Long story short, 5 days before my power train warranty was up, they fired up again and I took a video. Walked into dealer and showed them and they replaced $1400 worth of sensors on the engine. I thought whew...dogged a bullet.

It's now bitterly cold again her in northern illinois and a new set of problems. Warmed up the truck this morning and no problems. Left work today and for some reason it felt sluggish going into reverse. Half way home and bam, limp mode. No other gear in the tranny but I what I'm assuming is 3rd. Long story short, if I get on the gas normal, the torque converter seems to dog them blame instant limp mode. Shut the truck off and then **** can it off the line and the converter loads but then shifts throughout the gears. As long as I don't come to a complete stop, the tranny shifts fine throughout the upper end of gears even when in first. Come to a stop and lightly hit gas and blam again limp mode.

Only thing I can find on the web is in this link Any Ford Tech's? - The Lake St.Clair Network

Seems to be very similar to TSB 10-18-1. Throws 2 codes PO735 (something about 5th gear ratio being off) and PO741 (code for limp mode). And talks about the TCC solenoid Any one had this?

I am literally putting the truck up for sale in2 weeks so I can buy anew 2015f150 later this year. With the last two problems, it really has me thinking if I want to buy another one. I don't tow, beat or really even do any hard off roading. Built ford tough has me really questioning their engineering over the last couple of months. Please help if you can!!!!

 

So dropped it off at the dealer this morning. Apparently they "think" its related to an internal seal leak. What ever that means. Told me they wont know more until they open it up. As it stands right now they want $700 to fix the damn thing. I'll know more when I stop over and pick it up at lunch and get their $110 print out....BS is you ask me!

Any one had an internal leak on the 6R80?