K, I'll do my best here. I have a 1995 F250 4x4, super cab, 8' long box with 460 and about 260000K. About 6 months - 1 year ago we noticed it was burning really rich. It always had since we owned it but we figured it was getting worse. It's not, or wasn't, a daily driver so it wasn't high priority. Well the daily driver was stolen and now we are using the F250. The milage was getting worse and worse but not consistent. Sometimes it would be worse than others. One day, out of nowhere, it started shifting really really hard. Like, jerks the whole truck. It started with reverse then quickly progressed through all other gears. The same day, I was trying to get the truck home and was driving about 70K/hr when i suddenly lost power to the wheels. It was like I slipped into neutral. I was able to coast into a nearby parking lot and turned the truck off for a bit. When I restarted it everything seemed fine. It took only a few starts before the hard shifts were back. We've changed a bunch of the easy stuff TSS, MAP, TPS. We recently changed the TC clutch pack and everything worked really well, no codes posed up, for about a week. Now its revving really high and hard shifting between second and third, but again, its very intermittent. Reverse sometimes shifts hard too. Otherwise, the shifts seem normal or so smooth you can barely tell its shifted at all (which I also don't like). The milage is TERRIBLE!! I drove probably about 20k today and used over 1/3 tank. I don't know where to go next. I'm getting so frustrated. We had the transmission serviced about 3 months ago and they said it was in really good shape. Last night we got an EGR code. I am tired of putting money into the same problem with no resolution.

 

What's a TC clutch pack?

There should be codes stored with these symptoms. Maybe you don't have the right tool to read them.

 

Is it possible you could have a vacuum leak? It wouldn't cause all of those problems, but it could certainly be the cause of a few of them.

 

The solenoid pack. I'm a girl, I'm trying here, lol.

 

We've checked the vacuum lines. They're good.

 

Code reader now shows a 332 - insufficient EGR flow and a 452 - vehicle speed sensor signal fault