Question about 1993 Dodge Grand Caravan
My power brakes just stopped working. I am still able to stop the vehicle if I press the brakes all the way to the floor, and am driving slow. The brake pedal is soft when pressed and I noticed there is fluid slowly dripping/leaking out. What would be causing this issue and how can I fix this?
You have a failed brake master cylinder, you need to have it replaced and then the system bled of air. This requires special tools for the ABS brake system hydraulic control module.
Posted on Oct 30, 2012
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Posted on Jan 02, 2017
These are front or rear brakes? Drum or disk? I don't know the specific vehicle but there are only a few things that can cause this.
Air in the brake lines. If you disconnected ANY of the brake lines while doing this then there is air in the line. This will cause the brakes to feel spongy or soft. You need to bleed the brakes at the bleeder valves on each wheel. A small hand vacuum pump will help a lot, a good service manual will have specific details as to how. Brake fluid is not compressible but air is. The excess pedal travel is caused by the trapped air compressing. Even a little air in the lines will cause this.
Rear Drum Pads mis-adjusted. When replacing rear drum brake pads it is often necessary to back them off from the drum a bit to remove the drum. When new pads are installed you have to readjust them to be lightly in contact with the drum. There is a self adjusting mechanism but often corrosion or damage disables it. To use the self adjusters, put your car in reverse, drive backwards at moderate speed for a few yards and step on the brakes. The self adjusters are mechanical and should actuate to tighten the rear drums. You may have to do this a few times as the adjustment is small. One good way to check for this problem is to test your parking brake handle. If it feels loose and won't hold the car from moving then your rear brakes are in need of adjusting.
Damaged or Warped Disks. This can cause disk pads to ride a small distance away from the disk instead of just lightly skimming across the disk surface. Since the idea with brakes is to turn you light weight large foot motion into a super strong small motion at the pads, a little gap at the pads adds up to a lot of pedal travel. If your disks are warped you might be able to have them turned (machined straight) at a brake shop, but they can only be turned so far, so older, worn disks will need replacement. This fault is often accompanied by a pulsation in the pedal when you step on the brakes.
Posted on Feb 18, 2010
IF YOUR HEARING IT IN THE CAB YOU MAY HAVE A LEAK AT THE BOOSTER WHERE THE PEDAL ENTERS IT GET UNDER THE DASH AND PRESS THE PEDAL BY HAND AND SEE IF YOU CAN HEAR IT COMING FROM WHERE THE PEDAL ROD GOES INTO THE FIRE WALL
Posted on Dec 09, 2009
SOURCE: Brake problems
by repressurize, do you mean 'pumps up'. If everytime you hit the brakes (allowed to sit for a few moments between uses) it starts applying the brakes near the 'normal' pedal position, then it sounds like the master cylinder has gone bad.
Other less likely causes, lots of water got in the brake fluid (assuming nonsynthetic brake fluid) and has turned to junk.... Might try power bleeding the system, but my bet is the master cylinder.
Posted on Mar 05, 2010
Well if you have bled it correctly starting at the farthest out(PS Side Rear) and working to the closest(DR Side Front) and you make sure to close the bleeder valve before letting up and repumping the peddel,then I would say that the seals in your new master cylinder may be bad.When you bled the second or third time if there was no air then I would say you have a bad master cylinder.If there was air then you have another problem.Well hope this helps and good luck.
Posted on Mar 14, 2010
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