pulsing pedal on dry pavement

[Woody35]

no codes it just spradically been happening for the last three months. during light braking the pedal will pulse like im on ice or snow. then my reaction is to quickly get off the pedal then i reapply it and everything is fine. brakes are all under a year old all the way around and resovior is full with new fluid a year ago. also bled the brakes then. no lights no codes. also i can do a full on panic stop at 50 mph and abs works fine.

 

[btfarm]

Sounds like a lighly warped rotor that once it gets warm (with the initial apply) it straightens out.

 

[ak diesel driver]

have you checked for any loose parts?

 

[Woody35]

everthing is tight that i can see. dealer just did the rotors:mad2: would a dying abs module do this?

 

[ak diesel driver]

I doubt it. I would tend to agree with BT if everything else is tight. Put a dial indicator on it and see if there is any warpage.

 

[Woody35]

will do thanks guys

 

[WarWagon]

Check the sensor and sensor wires on the ABS. In fact disable the ABS unit to rule it out.
Drums can also cause pedal pulse. So can hard spots that 'refuse' to get turned out as the cutting tool will bounce off them. That leaves a hard spot that will give you a pulse 3000 miles or so after a brake job. You set a hard spot after a panic stop and then sitting on the brakes without moving. The red hot pads stay in contact with the rotor while the rest of the rotor can cool... leaving a hard spot under the pads.