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high speed and heavy braking will produce a pulsation in the pedal
that is the abs working properly and the pulsations are the brake release and reapplying
intermittent abs light indicates a wire or wheel sensor problem at one of the wheels
Check the abs sensor on that wheel and it's wiring. It sits very close to brake disk and could be loose or fouls by dirt and corrosion. Easy to replace.
The service engine light does not affect the abs.You most likely have a broken wire in your abs system which is affected by suspension movement.A code reader which does abs codes will tell you which wheel circuit is turning on the abs light.When there is no abs available the track will turn off.
I have three 1997 Olds Cutlass's. They do it to! Nothing to worry about. They will do that in response to a bump, or washboard road driven over at a certain speed. The wheel speed sensor on each wheel tells the computer how fast each wheel is turning. If one wheel speed is faster than the other three, as when you hit a bump, the computer thinks it is loosing traction and flashes the light, and may or may not engage the ABS system to even up the speed on all four wheels.
Now if that light comes on, and STAYS on, that is another matter. It will only do that if a wheel speed sensor becomes faulty, and then the ABS light will override the traction light.
most lickly one of the frt wheel bearing assy. sensors is bad. unless the light stays on all the time it is hard to figure out which one is bad without a scanner to monitor the system while you drive.
hi when you say hits a bump which wheel is it that hits the bump or is it the ront end hits a bump or rear and what did the fault codes say and what makes you think its not the sensors yates210456
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