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Pedal still goes to the floor after changing everything on the brake system but the proportional valve.

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Make?Model? year? what have you replaced? why did you replace it? what testing have you done? what are the results of the tests?

Posted on Nov 11, 2010

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Posted on Jan 02, 2017

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1 Answer

Why wound brakes work?


Lots of parts replaced for no reason,it seems

All you have to do is learn how to bleed brakes

That is the only problem

Oct 02, 2014 | Cars & Trucks

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I converted my 82 jeeps manual brakes over to power now dont have a full pedal why?


You need to use the valve on the frame. If you can't bypass the one on the booster, you'll have to get a booster off an older model.

Aug 31, 2014 | Cars & Trucks

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Fleetwood problem


Pretty normal to not be able to lock the brakes without the assistance of the booster, it'll take a lot of pedal pressure without it. It's also normal for the pedal to feel harder without the booster, this goes for any car/truck with power brakes. Try it with any other car you have and you'll see.

I've worked on several old Cadis but don't recall what year they started using front disc. If it's been changed from drum to disc you'll likely need a different proportioning valve and possibly a different master to get them to work right. Talk to the seller and ask if the brake feel changed when they replaced the master and if they changed any other parts.

Mar 31, 2017 | 1968 Cadillac Brougham

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1990 dodge dynasty. car had no brake pedal,replaced master cylinder ,got good pedal, and solid stream from all but the left rear,changed the proportioning valve,now have good stream and solid pedal,until...


There must be a leak or air in the system, try bleeding the system with the car running, have some one pump pedal threee times and hold while you bleed, tell them when to pump and hold. start at right rear wheel then move to left rear then right front and last left front, when done check lines and connections for leaks, make sure to bleed system good, let me know what happens and also does this car have abs system

Sep 02, 2013 | Dodge Dynasty Cars & Trucks

1 Answer

My brake fluid leaked out and the pedal goes to the floor, but does pump-up (after adding fluid), took it to a mechanic who replaced the fluid, master cylinder and booster, but it still acts like it has...


I assume that the mechanic bled the brakes after the job was done?If the brakes were not properly bled it could leave air trapped in the system causing the symptoms you described.

Oct 11, 2011 | 2000 Dodge Caravan

3 Answers

Have a 1993 dodge Caravan SE. Purchased it from a man which converted it from ABS to hydraulics. I didn't know it had brake problems till i got it running. He put on a 3 outlet 2 inlet proportional...


if something goes wrong with abs the brake system it reverts back to standard system!! If you can pump brake pedal up and hold it and start engine and it drops thats normal.You say low pedal if you go 15mph on road and check where pedal is when brakes apply.Power brakes will push aLMost to floor while stopped but while moveing you`ll almost go to slide or will go into slide if pedal is pushed to floor.Get on some gravel at 10 mph and hit brakes to a complete stop get out and check to see if all 4 tires slid or 2 front or only 2 rear. this will get you closer to problem good luck.

Jul 12, 2011 | 1993 Dodge Caravan

1 Answer

1998 bravada brake problem


If you have not replaced any brake lines or brake calipers, then It sounds like that the brake proportioning valve or the brake master cylinder if defective. If the the brake pedal goes to the floor, the master cylinder is at fault. If not, the proportion valve, which is part of the ABS valve body is defective. Have your local garage check these two components for possible problems.

Jan 11, 2009 | 1998 Oldsmobile Bravada

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