I feeling the ABS pulsing when turning the wheel after brake job
I replaced front pads and rotors on a 2001 ford ranger 4.0, automatic 4WD with ABS. Before I compresssed the pistons I opened the bleeder screws and removed the cover on the master cyinder. After the installation I bled the front calipers. When I drive the truck and turn the wheel to the left or right I can feel the brakes ASB pulsing more so when backing up, there isn't a problem while driving straight. What and why did this happen and how can I correct it. Could you please tell me the correct steps to removing the caliper and bleeding the brakes. Could you leave an email address in case I have any further questions. Thank You.
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I am not familiar with your ABS as to how it is fed to the brakes but I am pretty sure I know what you are talking about. It sounds like your ABS is activating which is in my case the wheel hub. You will notice a wire harness coming down to your wheels and where that attaches is usually where the problem is. (problem being if I am correct when you brake you are getting a rapid pulsing rather than a smooth brake)
Normally a "pulsing" brake pedal means that that you have a warped brake rotor or the brake caliper is lose. I would start by taking the front wheel off and inspecting the brake pads and the rotor. If the brake pads are worn down bad replace them. Pay special attention to the brake rotors also as if the are grooved very bad, they should also be replaced.
The most common cause of brake pulse is wheel bearings, because the rotor wobbles.
The way to tell is that you will also feel it through the steering wheel, when not applying brakes.
If the rotor wobbles, it will also make the brakes spongey, because the wobble will cause some piston retraction, causing a longer throw when applying.
It is usually the fronts that go bad before the back. And one side before the other, often because a bad seal allowed water in. But you can tell by jacking up and feeling for play.
If not a wheel bearing, then I would consider ABS problem, or the rotor was installed wrong.
yes that is a very common feeling in warped rotors, if you feel the brake pedal the pulsing then you defintly have warped rotors, replace rotors and brake pads, never reuse pads when they have been in contact with a warped rotor, they will cause the new rotors to warp also
Ok, if the wheel bearing assembly was installed incorrectly the wheel would wobble and you would have a disconcerting feeling in the steering wheel. The rotors have to be within factory specs to be turned safely. What I would do is have the rotors checked with a micrometer and replaced.
have you check? the master cylinder. sometine when you get the rotors cut they dont come out right because they may be warped or to thin. if you did the job yourself you might have put the calipers in on the wrong side. this happens alot . if your rotors front and rear are fine then switch the calipers to the other side.