Jerky braking

On Mon, 07 May 2007 16:12:33 -0700, Douglas rearranged some electrons to form:

Warped rotors are a possible cause. Take it somewhere that can check for this. Your local oil change kid is not the right place.

It's possible the grease on the caliper slides has dried up. That can also cause the symptoms you're describing. Get some white lithium and re-lube them and see if that helps. Also, check you're rotors for any rust or a rusty-looking spot about the size of a brake pad. You don't say where you live, but high humidity (like here along the coast) can cause bad things to a vehicle that sits up.

SC Tom

I only ever take my truck to a Ford dealer. Thats why I figured if two different dealers gave my jerky breaks a clean bill of health then there can't be anything seriously wrong.

But me thinks if I ask them to take a closer look next time I'm quite sure they will find something.

Try backing off the wheel nuts and then retighten to proper torque in the proper sequence.

I also vote for the rust on the rotors. I'm assuming you don't drive the truck much. If it is rust, you should vigorously ignore it. Somebody in this group might tell you spend some time and money trying to stop them from rusting, but you should resist them.

If you feel it in the pedal and / or steering wheel, it's probably front rotor warpage. Take it to a reputable shop, not the dealer, and have them checked and then machined. Left unchecked the vibration when braking will cause other front end problems, like ruining the wheel hub assemblies, and front end components.

Don't "ignore it vigorously", like another reply suggested. It will not go away. If you do, it'll cost you more in the long run.

Spdloader

Your likely have warped rotors. When they get hot they warp more and as they warp more they get more hot spots which make it warp more still and causes brakes to chatter like you are seeing. It is the worst when brakes are hot. SInce you farm out work anyway I suggest you take it too a good brake shop and get front rotors replaced no turned because if they are warped when you turn them to flatten them you will have differences in thickness in rotor which will lead to future warpage. This is not a rare problem. A non dealer brake shop would likely be cheaper than dealer and may do a better job because brakes are their bread and butter while it is not a dealers main roll.

----------------- TheSnoMan.com

Yeah, i got a 95 f`150, and it was sitting for a good 2 months during that time it didnt leave my driveway. Now that its on the road again, i felt the same thing, my rotors and drums are fine. The problem seems to be getting better slowly. It could be your brake lines. Try bleeding them, That should definately work if your rotors and drums are fine. Try using brake cleaner on the drums and rotors, just to clean them off, it could help.