have a 1998 z71,brakes pulsated when braking,i put on new rotors,i dont feel it in the pedal but the truck does not stop smooth,like it still pulsating.can it be in the abs,or any ideas.t
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Me thinks the Front rotors are not ON properly. Are they one piece or composite? My original composite rotors were thinner, allowing the hub to protrude into the rim center. If not put on properly they would not sit flush on the rotor.
If you think its the ABS, try pulling the fuse and take it for a ride.
Cheers
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So.........it does have a pulsing pedal..??? OR.....it does NOT have a pulsing pedal.. ???
2 posts......same day......confilicting info.Anywhooooo....... have you thunked maybe the pulse MAY be coming from the rear....and NOT the front ?? .WAS ANY brake work done to this thing just PRIOR to the symptom showing up?? Have you had the brakes inspected (FOR FREE) at a brake shop??
(wink wink)
MOST COMMON cause of pulsing brakes, (in the pedal or not).........are.......... Warped rotors Cheap REPLACEMENT rotors that need to be machined Warped Rear rotors or drums Calipers loose...(guide worn or guide pin bushings......letting caliper move around)
A suggestion ??? Clamp off BOTH front brake hoses at the calipers, go for a test drive, USE COMMON SENSE ......don't go any faster than need be and use a street that's isolated as much as possible from traffic. See if the symptom goes away. If it does...then unclamp ONE of the hoses and see if the symptom comes back. THEN ....clamp the hose again, unclamp the OTHER side and check for the symptom. IF.....the symptom is narrowed down to the FRONT brakes using this technique, then clamp off the REAR hose and test drive it again. Because of your limited diagnostic experience on brake systems......we need to try and narrow down the AREA of the symptom then ....scrutinize the brakes in that area. (see list above)
ANYWHOOOOOO....... still not clear after reading BOTH of your posts if the pedal pulsates or not. Either way...if you've replaced the rotors and the EXACT same symptom is still present then it's time to either do the test above, or take ALL THE TIRES off.....and do a solid inspection of the brake linings, calipers and caliper mounting, and condition of the REAR brakes also.
Pulsating is one the easiest symptoms to cure.....and using the list i posted , you should be able to find it easy enough.
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