2002 dodge caravan 4 cyl brake problems?

while driving brake pedal went to floor with no stop until at bottom wheels locked up when came to a stop pedal still on floor i released pedal which came back up and when i pressed pedal again i had great pedal response all the way back to the shop i had master cylinder replaced two weeks ago this is the second master ive had installed in 6 months and now the mechanic says he cant figure out problem

Update:

also no leaks and had the rear wheel cylinders replaced about in feb. do to a mardi gras bead taking out my break line lol

Comments

  • You have too much air in the system.

    Watch him as he bleeds each wheel starting from the farthest from the driver. You should hear no squirts when the air is out. I'd go back though and check that master cylender. It sound defective or a line is loose. Before you do that see if the master cylender is topped and check for leaks on the ground too.

    Best of Luck

  • sounds like the calipers or sticking. Jack up the front and rotate the wheels by potential of hand, in case you hear or sense a dragging sound the calipers or no longer freeing as they ought to. The pins that the calipers elect the flow on my be undesirable or must be greased with a definite grease made for this. The piston of the calipers won't be going back in as they ought to using trash develop at the back of them. steel pads will final longer. once you replace them.

  • Have you ever heard of a "run-on sentence"? THAT'S what your problem is.

    I simply cannot understand your unpunctuated, uncapitalized rambling. Do you think you could at least ATTEMPT to write something semi-intelligible? That way, NORMAL people could possibly answer your question.

  • It could be one of your rear brake cylinder

  • sounds like you have got a bad master cylinder,buy one from a quality place,not made in mexico,thry work for free,try napa

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