when driving and press brakes hard right front caliper locks up but if turn car off wait a little while works fine. i took it to the dealer they find nothing wrong and say it dont look like its locking up. but the service writer says it could be the spead sensor but theres no codes and they wont change it unless they can make it happen ad its happen 3 times to me but truck wont do it when i need it to happen. any help would help. thanks

 

Anyone please????????

 

Caliper is probobly bad. I take it that the vehical pulls to one side. Find the speed sensor and disconnect it, and see if the problem goes away.

 

Often times it's a stuck slide pin in the caliper. You need to grease them. Welcome to guzzle's Front Caliper Slide Pin Upgrade Web

 

The thing is i checked the caliper and it sqeeextremly smooth and the pins have been greesed but stills happens. And it does pull when it happens and the truck shakes violently at 45mph and above when this happens. Any other ideas ?

 

Sounds like if it shakes violently the rotor is warped and the stuck caliper is causing the brakes to grab to cause the shaking.

Pull the calipers off the rotors, and push the cups in, and see, the that the side of the vehical that's pulling... see which caliper is giving you a hard time to push the cup in. If the cup is hard to push in and the other side isn't hard to push in, then the one that is hard to push in, is bad, and is the problem. GABESH?

 

But the rotor cant be warped becouse it dont shake all the time. I have had the truck for 4 months and this is the third time it happens. If the rotor was worped or out of round and the caliper was bad and sticking it should do it all the time but it dosent. The truck drives perfect. When this happens all i gatta do is turn the car off and wait 20 minutes or so and it drives normal again. Thats why im asking becouse it so wiered of a problem.

 

I recently had basically the same problem with my 98' F-150. It ended up being the return brake line. The one that is flexible. Caliper on the right front was basically brand new, yet would stick. After checking things over I took off the brake line and could not blow air through it. Bought a new one which would allow air to pass and lo' and behold the problem went away. Sounds like brake fluid is getting to the caliper but is slow to return hence the problem going away after several minutes.

 

Ok, then you have a control module problem. Have a scantool done and look up the code yourself, if the dealer can't find it. I had to do that on my wifes car, on the Hyundai site. The shop scanned it but could find the code.

 

Mine began having the same symptons recently. I took it to Ford today and they said the caliper is bad. Reccommended that I have both front calipers/pads replaced at an astronomical cost. Just turned 35K. Doesn't sound right to me me. Any suggestions?????

 

I have extended warrenty but my problem is they wont replace nothinh till it happens while they have the car.

 

My right front caliper was hanging up and caused a "death wobble", the wheel also got hot. New whole caliper at Advance Auto was only about $50. Easy to change and fixed the problem.

 

I have this same problem on my 1994 f250 turbo with 65000 miles. First it was my left front several years ago so I change the caliper and the it started on the right and changed that caliper.Even after I changed the calipers it has happened and just did it the other day.Same thing lots of vibration and pull. Stop for awhile and it releases and back to normal.Its a intermittent problem... anymore ideas

 

I agree with the brake line theory. Usually it pulls while braking to the opposite side of the offender?

 

Ima try the slide pin ugrade first and see if it helps.