Hello, i'm having brake problems and i'm not quite sure what needs to be fixed. It feels like the rotors are warped (hard pulsing...almost to a dangerious extent sometimes), except it only starts after i've been driving the car for awhile (10 minutes of city driving). I do know that the front rotors where turned before I bought the car (about 15k miles ago). Any help would be greatly appreciated, i'm trying to get my car in good running order before I try to sell it for an LS1 (its a 98 v6). If it was the rotors I would be feeling hard choping at all stops, not just select times...right? Could this be an ABS sensor, or something to do with the calpers/pistons/etc? The car has 57k easy miles on it...

I have searched this forum and many others for several months now and cant decide what it is.

Thanks,
-Justin

 

At what "Select" times do you feel the chopping at?

 

I ment while slowing down or coming to a stop, sorry about that.

 

buy new rotors even if old ones where turned they will still pulse after driveing 4 awhile

 

The stock rotors could warp again that quicky. Yes, they are THAT good. Also check the lug nut torque. If they're too tight it'll cause warping too.