1998 monte carlo LS surging?? Please help?!

[m_gadbois02]

when driving 70 - 80 mph, i can feel this wierd surge on and off like every 2 second its like a heavey vibaration, feels like its comming from the front and i can feel it in the steering wheel and gas pedal. only at that speed though. Any Ideas what could be wrong?

[richtazz]

normally, speed related problems are either wheel balance related (bent rim, out of balance tire, etc..) or a bad hub bearing. If you have older tires, and haven't rotated them , it will cause uneven wear, which can cause cupping of the tread, and a vibration.

[kamikaze_k77]

I have same problem as you - thought that it was a balancing issue, so i had tires balanced - no help. I found that my right-rear bearings were starting to go - have nbot had time to repair yet, but i think it will do the trick!

[Josh Z]

if that doesnt work and the car shakes it could also be that one of the rotors are warped i just had that problem