You must check your bushings on the rear shocks/struts on top and on the bottom any one if severely worn will cause the anti lock brake module to run and the traction control because it is sensing a slight movement both are controlled by the abs module for the system also the stabilizer links can cause a weight shift in the wheels letting a sensor activate you also have rear spindle bushings and wheel hubs that have sensor rings on the hubs if the spindle bushings are worn this allows it to twist and uneven traction is the result in the front you have strut rod bushings on each side that connect to the control arms again if worn it's allowing movement triggering the traction /abs sensors and also a worn cv axle will slip slightly activating the system start with the cheapest bushings and links and strut arm and spindle bushings and shock/strut bushings and mounts any movement will activate the system ok please post back with progress you made write down everything you've done so far and I will get back to you also tire treads that are different will cause uneven traction I'm a taxi mechanic in nyc.with 50 years experience in all phases of the automobiles mechanics and I will get you to the problem cause obviously I'm not there so I need you to communicate with me precisely what you have done so far because I can't check the vehicle myself good luck stephen
Is this a two or four wheel ABS system?
You still have a sensor issue. Perhaps too much brake dust in an ABS sensor mounting hole.
SOURCE: speedometer,mileage does'nt work,abs,traction,brake lights r on
no it does not; this is a massive short in the electrical system and, requires the services of an auto electrician like myself.
take the car in to an ASE certified auto electrical shop and, stop spending money on temporary fixes
the technicians can read the schematics and, fix your car right
SOURCE: BRAKE NOISE
Ive never heard of such a thing. Any vehicle ive ever driven the booster does not make that noise.. i dont know how to help you, but im pretty sure its not the booster, dont waste your money there
SOURCE: abs brake light on
actually you may not need to replace any parts. from what you are explaining on the vehicle you have a air lock in your brake lines. try and bleed the brakes again starting from the rear passenger than the drivers passenger than the passengers front and last the drivers front. than disconnect the negative battery cable for about 5 min to reset the lights and see what happens. please let me know if you need more assistance with this problem.
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SOURCE: 1988 Lincoln Mark VII, Bill
I have not heard of an ABS causing these problems. Usually, a loss of pressure is a hole in a brakeline or a bad master cylinder.
The first brakelines to leak on my 1988 Bill Blass where those going under the engine. Check in the frame where the lines are routed from the ABS to the front brakes.
I use a Vacuum Handpump Bleeder. As long as there is fluid in the Master, you should eliminate the air. If you have a leak when you draw down each wheel you may hear a whistling, deflating ballonlike sound of the air draw. My handpump has a gauge which will show a pressure drop.
Or you can go the other direction and disconnect the ABS lines to the wheels. When you draw the vacuum from the closed Calipers, there should be little air in the lines. However, a hole in the line will continue to drop the draw from that particular wheel Caliper. This would prove you have an opening in the line.
Pumps when you Brake? Do you mean you have to pump it to
get it to brake or it surges the brake pedal? When the rotor was changed, most likely you had to compress the Caliper to get it on and may have changed the pads while you were there. If that is the case then sometimes the seals in the Caliper will roll instead of sliding back properly. If this is the case and you have to pump the brakes because they are spongey then you will need to replace the caliper. If the brake pedal is surging when you apply the brake (which would also be felt in the steering wheel then the new rotor was either incorrectly installed or is warped.
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Also worn wheel bearings in the hubs will cause movement these systems are very sensitive to uneven movement ok start investigating from front to back you can go to rockauto.Com for some stuff to see what the parts look like if your not sure any broken bushings will activate the system so look for that especially you have a lot of work to do now and I just came home from a 12 hour shift tonight I'm taking my wife out so as Arnold says I'LL BE BACK! POST BACK FRIDAY NIGHT IF NEEDED
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