Has anyone else had this problem or maybe have a solution? My truck after 20 miles of driving each day developes a pull to the left under semi heavy braking. It doesn't do this in the morning so I think it might be heat related. Ford put on the new "Improved" rotors and I put on Porterfield pads, this was all done about 2k miles ago. The pull just recently started. Any ideas?

 

sounds like only one caliper is working. you may have to grease the slides or the piston could be stuck

 

Check your tire pressure on the side it pulls to, just to be on the safe side. These trucks are heavy, and the added front end squat during braking could load up an already low tire, and cause a pull. Sounds more like you are getting more braking on one side, but it's worth a shot...

No lights on the dash I suppose (ABS, etc)?

 

Thanks for the response.
Do you think heat could cause this? Like I said It works fine until things start to heat up.

 

Now that you mention it I did notice that the ABS light came on the other day but went back off in less then a 1/2 mile and i havn't seen it on since.

 

its possible certain metals expand and contract diferantly at certain temps.you may also have some air in the line if the dealer took them apart when the did the rotor change

 

Anything is possible. Keep in mind that as things heat up, they tend to expand. So after driving, if you dont have enough grease on your caliper sliders, it could be sticking and hanging up causing it to pull to one side under braking conditions.

 

How hard is it to grease the caliper sliders?

 

I have had similar issues... I am assuming that there is no brake biasing control on our trucks. Is this correct? Or even worse, am I confusing front-rear brake biasing with my own fiction of left-right biasing?

 

That ABS light coming on sends up a red flag. I wonder if it stored a code when it did it. There is a "proportioning valve" in the ABS system that balances pressure during heavy stops. This keeps the brakes from locking (hence the name), and it is responible for that little propeller noise you hear whenever you have to stop that three tons on a dime. That light makes me think trip to the dealership to let them check things out... better safe than sorry.

 

its easy as long as you have the tools . just unbolt the calipers and grease up the slides

 

Do you think this would be covered under warranty? Even though I've put new pads on.
P.S. It did not store a code I already checked for that

 

I can't see why not, unless the pads themselves were somehow the problem. With the ABS coming on, it seems like a no brainer...