Especial86

iTrader: (1)

This certainly is a revelation^^^
I have a feeling that your throttle body may be sticking, or may altogether need calibrating.. might want to look into a repair or replace of this and all it's components (stepper motor and TPS)
Throttle body issues do in fact affect transmission kick down and shifting, which could cause a "drag" like symptom or hold a gears too long.
Any change in driving with tow/haul mode?

ZeroTX

Or if the TB sticks open, causing a lean condition. I'm still worried that there's a major lean condition occurring, which would melt cylinders. Hopefully not, but it's a real risk on turbo engines.

Slowtrucker

I wonder if the ECU is messed up and having the brake controller active is triggering the problem. You talked about and showed lighter, smaller trailers and *I* assumed they did not have brakes. See if you can find a friend with a smaller trailer that has brakes to test. The change in electrical load is how VW managed to hide what they were doing by computer control.


Yes, it would be nicer if Ford did the testing but I would be willing to bet a six pack you have strained their tiny brains already and finding the cause of the problem will require going well outside normal procedures. That becomes a management problem because corporate America does not do well with apologize after the fact of breaking the rules and huge bureaucracies are created just to deal with asking permission, which is rarely if ever given. This is NOT a Ford peculiar problem but it has become an American problem.


Given all that horse manure, what ideas can WE generate that may aid in isolating the problem? I assume that was why you went public in the first place.


All the testosterone loaded posters need to get some chill pills because you are cluttering up a serious thread with your garbage. Tow weights, car overheats, other manufacturers, and rude remarks about natural selection simply make it clear your mind set is not attuned to solving problems if you can make them. /end rant

wolfpack219

It's just not normal, there is a malfunctioning part or ECU issue. I towed a 7,000 lb TT through northern NM in July, 100+ degree temps, major elevation changes, some at slow speed. Never once did my engine or transmission heat up outside normal ranges.

Thugzy

Could be a malfunction of the active grille shutters, they could be stuck closed

Especial86

iTrader: (1)

I'm Just gonna take a few stabs here with the info I'm presented with..

What would be great is a list of the codes the dealer cleared out when the OP brought this truck in for the starting and low idle issues. Might be worth seeing if the dealer has them documented somewhere.

I'm starting to think that there is one of the following.
A calibration issue either at the throttle body/throttle position sensor.
A mechanical issue with one of these components. (Maybe a dirty or damaged throttle body)
Or an information issue from a faulty sensor such as an ACT sensor (air charge temp), a MAP sensor, or even a coolant temp sensor or faulty cylinder head temp sensor.
I'd be more inclined to think all sensors are working properly and there is a mechanical defect in the throttle body (occasional rough idle, low idle, cold start/hard start all mentioned mention by OP)
There could be a slight crack or boost leak somewhere in the charge pipes or intake manifold as well.
Saw the video.
Overheating while loading the engine could certainly be due to a lean condition.

A boost leak or bad information being fed to and or reporting from the TPS sensor(s) could definitely cause a lean condition.

I'm sure the wastegate is getting its signal and vac reference from the TB dumping that vacuum when it opens, so that's why I'd also say there could be a boost leak if the throttle body itself checks out ok. After that I'd be looking for a bad sensor if all looks good.
After that start checking for failures at the waste gate and each individual component in the FI system..

Aashu

u haul offers truck for rent. Agree they are chevy but a sanity check of trailer can be done

MagneticScrew

👍🏽 Ive mentioned that earlier.

bubbabud

Enterprise rents 17 F150 I just returned one only problem V6 NA and no receiver, the one I mentioned in another response to this thread. The fans sounded like a tornado.

Cwprotek

I agree with the others saying test it out with a different trailer. Your truck is working way to hard.

2.7 with ​​​​7500 uphill.

2.7 towing travel trailer uphill. This guy is a member here.