History: I just bought a 2004 5.4L F150 FX4 4x4 SuperCrew with 89k miles and noticed a possible transmission problem.

Symptoms: I'll try to describe it as best as can but with the truck in drive and when I let off the brake the truck starts to move forward like normal, but when I give it gas it feels like the e-brake is on until I reach about 5 mph. The resistance isn't steady, it lightly jerks until it finds its grip and then the truck goes just like it was new and shifts through all the gears and works perfectly normal. Another way to explain it, is it feels like the rear tires are spinning out in dirt before they grip and the truck gains full traction. It seems to be more noticeable when reversing up an incline.

About: Trucks transmission fluid seems to be normal, but then again I just bought the truck and might have just been changed. The engine seems to be working just fine and I don't think this prob in engine related, I think its somewhere past the motor.

Help!: I have searched and searched multiple forums and I cant seem to find any postings that describe this symptom. If I missed a post I can you help me find the post I should be reading? If not can someone tell me what this problem might be? Any help would be greatly appreciated!

 

Do you get the same response if you place it in manual low to start off?

 

Hmmm... I'll have to check.. What would that mean if it doesn't? Or if the problem still does happen?

 

sounds to me that your first gear is slipping and just about to go out but then again your rear brakes could be sticking you could find out by taking off fast if it just runs up high rpms your transmission is slipping an if it rpms are low check your brakes

 

I have the same truck with 127k miles and it does that too... but its done that since i bout it with 64k miles almost three years ago... it hasnt gotten worst or better. Just do what i do and drive it till it breaks...

 

my transmission was doing something similar to that. when i would first take off it would feel like the truck was lacking power until i got to 10 mph or so. turned out it was a check ball in the transmission, #7 i believe. they had a tsb on that item. i didn't catch it soon enough and had to have the tranny rebuilt.