i have a 01 supercrew 5.4 triton...runs great,good on gas,no check engine,has power but i cannot power break or make it peel out.if i try to power brake it feels like it looses power i would really like to resolve this problem..Does anyone have any suggestions???

 

How many miles? Maintenance history? Is it a 2wd or 4x4?
You don't have to have a CEL for there to be maintenance issues. There are a lot of things you can do to help keep it healthy. The right oil and filter, a good flowing air filter, fresh plugs, 02 sensors, cleaning the throttle body and elbow, cleaning MAF sensor, new fuel filter etc.. the list goes on. All depends on mileage and maintenance. Fluids are the first and most important. Transmission, rear differential.. But if you have some miles on it, might be time for a good go through, freshen things up a bit.

 

Torque management. An aftermarket tuner can help with that - custom preferred as it offers the most flexibility.

Also be aware that available traction, vehicle weight, gearing, tire compound, road surface, etc, etc, all count here. As does heat soak ( pulls timing).

Any mods?

BTW - this has been discussed several times over the years.....

Here's a good primer: https://www.f150online.com/forums/1977740-post35.html

From this thread: ==> https://www.f150online.com/forums/ch...o-burnout.html


MGD

 

My 5.4 Screw wouldn't do a burnout when it was new!
Spend about 15K on it and you wont be able to keep them from spinning.

Phil

 

I believe it. I (99 SC 5.4 4x4) can get a nice bark on dry pavement from a stop, and can power brake.... but add a few tools and a passenger and it's not happening.