Hey folks newbie to this great site .i have a question that probably you experts can help me out with .2008 f150 fx4 has some shuddering so I replaced my rotors and pads and slide pins and re assembled .shuddering has not gone away .chexked my wheel bearings as well and no play Was wondering if you guys had any ideas ? Was going to replace rear brakes and possibly upper and lower ball joints any help would be greatly appreciated

 

When does it start shuddering? When accelerating, braking or coasting?

 

When i am braking

[QUOTE=ManualF150;5251382]When does it start shuddering? When accelerating, braking or coasting?[/QUOT

 

I would check your rotor's runout.

 

Run out is 2000 so I think it’s ok . I was going to replace my bearings?

 

Usually pulsation through the brake pedal is indicative of warped rotors. However, depending on the severity, you may not feel it.

Can you take a picture of both sides of the rotors?

I really don't think there is anything mechanically wrong with your truck.

 

The rotors are brand new and not china

 

Check the tie rod ends.

 

You sure the ABS isn't kicking in?

 

Arod - I moved your issue to its own new thread, since it has nothing to do with the problems posted in the other 11-year old thread.

As glc suggested, you MAY be feeling the ABS engaging. Sometimes, it can seem a bit overactive in my opinion. If the rotors aren't warped, there's little else that can cause what you are experiencing. I certainly wouldn't think this would be caused by faulty bearings.

- Jack

 

are you using ceramic brake pads?......i too had similar issues when using ceramics up front.... even after I cut the rotors...3 weeks later...same thing...more like BITING...not ABS pulsing. Went to semi-metalic front ceramic rear.. seems to work