pulsing brakes on a 99

[lab-rat]

I am having what I think is a problem with my brakes on my 99 cobra. Sometimes, when I hit the brakes, it sounds like a wood pecker and the pedal has a pulsing, almost like when anti-lock brakes are active. It is not the anti-lock brakes being active, that is to say that I am not having to be on the pedal hard for this to happen. It is sporatic, not ocurring at any specific pedal effort level or speed that I can tell. Has anyone experienced this as well?? any help would be great, as I am a little new to the "hydra-boost" brake systems, not sure how to diagnose the problem.....

 

[Boss75]

Wow. That is exactly what has been happening on my 99 as well. I never could describe it very well though, but I'm glad to know someone is also having this problem (though I feel your pain). Anyone know what this is?

 

[RedTwilight]

My '96 had something like what your describing. I a good chance that your rotors are warped. I replaced mine and the vibration completely stopped!
Hoped I could help.
Trinity

 

[lab-rat]

I do not think it is the rotors... the pulsing is too fast and doesn't seem to vary with speed. It only varies in intensity with pedal pressure. Has anyone else experienced this and had it fixed...???