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Replace Master Cylinder and Brake Booster At Same Time?

15319 Views 11 Replies 7 Participants Last post by  Drunken Elvis
My 2005 Town and Country van has over 250,000 miles on it. Yesterday, when I went to back it out of the driveway, I stepped on the brake pedal, heard a pop, and the brake pedal went to the floor.

None of the lines going to any of the calipers are leaking. I looked near the master cylinder and saw a brake fluid. I am not sure the brake booster or the master cylinder are bad, but with the amount of miles and the age of this vehicle, should I have both parts replaced?
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I will take another slower, more detailed look tonight. I did a quick look at the flexible lines that connect to each caliper last night, and did not see any leakage. The brake line connection area of the master cylinder looked wet, that is what got me considering it to be a master cylinder problem. That and the popping sound seemed to come from right under the hood.
You are right about the replacing the whole van comment. I am going to take a second look tonight to see if I can locate the leak. Besides this latest brake episode, I need to replace a passenger side lower control arm, and inner and outer tie-rod ends on both sides.. That, and I have an oil leak to track down. It is our "utility" vehicle for taking yard waste to the recycling center, materials from lumberyard, etc. I am thinking of searching for another van to use for those types of tasks, but one that has around 100,000 miles on it. I applaud some of the really high mileage van owners on this site. They really must stay on top of their vehicle maintenance to have a high mileage vehicle that is dependable.
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Thanks everyone for the help on this. I had time this morning to take a closer look, I removed the battery and battery tray to for a better view. There are two small metal mesh hoses under the master cylinder. The lower of the two hoses burst. Photos below.

Can anyone identify these two lines so I know what part I am looking for? And if you have any advice on remove and replace of these lines, that would be appreciated, too.

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OK, these are the primary and secondary lines from the master cylinder to the hydraulic control unit. Has anyone replaced just these lines before? If so, do you have any advice?
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