Hello everyone, I have been having an issue with my 04 150. I thought I had a warped rotor so I replaced the front brakes and rotors and that did not fix the issue.

When applying the brake, it sounds and fells like a warped rotor, but no pulsation in the pedal, truck just shakes a little and feels like a flat spot on tire.

It only does it when applying the brakes. Could it be the rear brakes causing this?

 

Could very well be. Rear rotor could be warped/bad pads or both.
If everything checks out, small possibility you could have a caliper beginning to seize

 

YES! I had the same problem with my 04 F-150 when I purchased it second-hand, changed the fronts assuming they were warped, turned out the REAR discs were warped. So much that the pedal would seem a bit low due to the piston being pushed in more than normal.

New discs and Akebono Pro ACT pads (ceramic, very little dust and stop great), and zero vibes/pulsation.

 

This is a common problem with Ford Trucks. I get calls all the time from Ford Truck owners looking to replace and upgrade their rotors because of the warping issues. Replace your rear rotors and you should be good to go. Check out our products at www.sp-performance.com.

 

Rotors don't "warp" anymore... The brake market calls it "runout". *eyeroll*

 

DId you re-install the front calipers correctly? ears to the inside of caliper? Wheels correctly torque?

 

You are absolutely correct. According to rotor manufacturers, the rotors do not warp, they wear unevenly due to the rotor runout. The every day market knows this as "warping".

 

It's actually brake pad material build-up on the rotor...

 

Jesus... Soda through the nose burns... lmao

 

Thanks everyone, I am going to change rear brakes, rotors, parking brake ect this weekend.

I am also doing to check all calipers as well.