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Originally Posted by wylie
Hello out there.
I have a 99GT and I've just done the front brakes,rotors and pads,the old ones where shot and braking is much better now however when braking at hi speed there is a slight pulse at low speed you don't feel a thing.
The back brakes weren't as bad as the front so I didn't replace them.
I didn't use cheap rotors so I'm hoping thats not the problem.
But the problem is how do I tell where the pulsating is coming from? could it be the back brakes?
If it is the front wouldn't I feel something on the steering wheel? because the steering is smooth even though I feel the pulsating while stopping, its seems impossible to tell which wheel is the culprit.
I know the simple solution is just do the back brakes but I'd hate to do that and find out it was the front.
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Hey Wylie. Had the same problem on my Regal LS. I procrastinated on the rear disc pads and rotors. As a result went through 2 sets of rotors and pads on the front. Seems like the front were overworking due to the imbalance. When the rear brakes are up to snuff it takes the load off of the front. The pulsating or modulation I was getting was actually from the front. On the final repair I had all 4 rotors turned down and installed medium quality pads all around (Duralast brand) and its worked like a champ since. Good luck!
Thrasher CAI, DHP v1.0 PCM,
3.25 SC pulley, CAIT GMAF, Hi-Flow CAT,
u-bend delete, 160 TS, TB spacer,
MSD 8.5mm wires, Autolite 104 Spark Plugs,
Goodyear Gatorback Serp. & SC Belt,
Nitto NT555R Drag Radials