Anti lock has nothing to do with it. the brakes operate without ABS. run the motor then turn it off. pull the vacume hose off the power booster and listen for a suction sound. if none. plug it back and start the car. pull the hose and put your thumb on it. it should ****. the booster depends on vacume to work. If you have vacume to the booster and the pedal is hard, change the booster.(scrap yard)
Testimonial: "Didn't follow up with most of what you said in the beginning of this post but the end of it, we found out the motor was bad, on the power brake booster. We're laboring to find a replacement part that is affordable and doesn't cost what a used vehicle runs for around here. ^_^ I agree with you just saying."
where is the powerbooster located? My understanding is it should be in the car, drivers front side, behind the brake pedal, etc. Would I be correct in this conclusion?
I'm asking to ascertain whether or not I have a powerbooster instead of acting like I know more than I really do. I know nothing about this vehicle.
Your car has a brake booster. It is located behind the master cylinder on the fire wall.Hydraulic or vacume. If your ABS light is on ,go under dash on drivers side and find diagnosis test plug in. lump A to H terminals and turn on ignition. the ABS light will flash and count them( EX. 1234-123 is 43) this will give your code. let it repeat 4 to 5 times
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SOURCE: anti lock brakes
Brake system warning lights illuminate to alert the driver to various brake system conditions and are usually located on the instument cluster.
Each time the vehicle is started, the ABS control module performs a diagnostic self-check of the ABS system. During this self-check the ABS warning light in the dash panel insert will illuminate for a short period of time . After the self-check has completed the ABS warning light will go out.
If a malfunction is detected within the anti-lock braking system during the diagnostic self-check, the ABS warning light will illuminate and remain ON and ABS will be turned OFF, until the cause of the malfunction is repaired. How ever the conventional braking system will remain fully operational.
The brake warning light will illuminate if the brake fluid level becomes low or if the parking brake is engaged.
Hope that helps...........
SOURCE: Bad Brakes
I would be looking at the ABS valve. one way to test the booster is to start the vehicle while you ae depressing the brake pedal, you should feel the brake pedal drop a little bit, this is a sign that the boostr is working properely. you may want to check to see if there is any air in your system as well.
hope that this helps.
SOURCE: excessive brake pedal travel and 'soft' brakes
the brakes have to be bleed you wrote that when you start the car the pedal goes to the floor that means the booster is working fine take it back and tell them you want the brakes bleed
SOURCE: anti lock brake system
If the light is not on it may not be the ABS that is pulsating on slow braking but it may be that your have warped brake rotors, even if the rotors were replaced with the pads the new ones may be warped already, we always check new rotors on a brake lathe before installing them because we have seen this happen many times
SOURCE: 1999 f150 anti lock brakes
John, My 99 F150 had an abs light on and I found the right side front wheel sensor wire had fallen off of the inner fender mount and burned the insulation and grounded the wires together, I taped up the wires and tied it up and the light went out. Your ABS module is located directly beneath your air cleaner next to and just above the steering gear box. It is black plastic and silver alumnium. Says Kelsey-Hayes right on and has six brake lines attached to it. As for the rear brake take that drum off again and have someone help by pushing the brake pedal down while the drum is off press lightly and very slowly, verify that the brake cylinder is moving, do not push hard and fast as it will probably blow the pistons out of the cylinder! If is is frozen replace it and bleed and it should be fine. The brake light is probably on for low fluid. Let me know how it goes.
Hope this helps ??
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Forgot to include I have a 3.8L, 6 cyl.
OK So I found out today that the car we have does not infact have a powerbooster. Sorry for the misinformation. It has a hydraulic assembly ABS and from what i can understand the part costs $800-1500 NEW. to add insult to injury, from what i can find, it has to be discontinued, as I cannot find used ABS's aanywhere.
let me re-write this. I have since posted this, found out, that it is instead, the power brake booster motor that is bad. I have labored strenuously searchin for a replacement for it that is less than $350, even $300 and I can find almost nobody that has it. But just so everyone is aware it's the power brake booster motor that is bad. It has trouble turning on. Long story short... I've figured out the problem just looking for a replacement part in my spare time.
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