Trans slips only after overdrive has been engaged

[BradM]

06 f150 5.4L
Shifts fine driving around on side streets but when I get to higher speeds it starts slipping. Even if I come to a complete stop it will slip going into every gear. Anybody know what's up? Common thing?

[Broncojohnny]

Common thing, those trannies are shit.

[LS1Goat]

When is the last time you've changed the oil and filter in the transmission? Is it low on fluid? How many miles? As I mentioned in another thread, I've had problems with torque converter stutter/slippage on 4R70/4R75E trans before. Fortunately, the fix was just to do a flush. Then install an external trans cooler to address the problem of heat over time. I say that assuming you don't have a factory tow package. The ATF breaks down over time due to heat and affects lockup. As with all auto trans, most problems are heat related. Sure, it could be something like a bad OD band or a misfire, but I would start with the basics.

[RJDCobra]

Being a 5.4 3v make sure it's not misfires. If it has factory spark plugs then they definitely need to be replaced. The service on those 5.4 3v plugs has been changed to every 60k. Being if the transmission is or was slipping that bad for that long the fluid should smell burnt by now. If your cruising speed and you lightly step into the gas and it's acting up I bet it's misfires.

[Baron Von Crowder]

Common thing, those trannies are shit.

the 4r70w/4r75w are far from shit.

[Broncojohnny]

the 4r70w/4r75w are far from shit.

Ever towed with a truck that has one? You might change your mind.

[Baron Von Crowder]

Ever towed with a truck that has one? You might change your mind.

yeah, and I put one in my 69.

[BradM]

Yall were supposed to say "Replace this $8.00 part" Anybody know what a reman runs?

[CyaNide]

the 4r70w/4r75w are far from shit.

They fail more than you think. Usually just over 100,000 miles.

CN

[Baron Von Crowder]

Ive got 40 of them on the shelf if you need one.

What are we compairing them to? The 4l60?

[ktm300hater]

Ive got 40 of them on the shelf if you need one.

What are we compairing them to? The 4l60?

I'd be interested in one. Pm me a number if you want to sell one

[BradM]

Ive got 40 of them on the shelf if you need one.

What are we compairing them to? The 4l60?

Do you know how much they cost? This is the first time I have had to pay for a tranny to take a dump on me.

[Mysticcobrakilla]

Lol

[slow84lx]

Common thing, those trannies are shit.

Solid auto transmission.

[lowthreeohz]

It really isnt though.