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I'm trying to find out if 1963 Plymouth Savoy came stock with a brake proportioning valve

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If I remember correctly you havedrum brakes all the way around on that car. If so, there's no valve.

Posted on Oct 06, 2009

Testimonial: "Thanx a lot, working on an old pro stock drag car, it's been butchered. Thanks again"

  • Richard Scordino Oct 06, 2009

    Look up **** Landy...he ran stuff like that and had lots of good ideas.


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What does the proportioning valve do?

Assuming you're talking about the brake system...
The proportioning valve is on the rear brakes only when the vehicle has rear Drum Brakes.
What it does is limits the brake line pressure to the rear brakes during normal stopping. This way the rear brakes don't lock up and cause the vehicle to fish tail or spin.
When you press the brakes harder than normal, the proportioning valve opens more to allow more line pressure so you're able to stop faster.

Jul 10, 2014 | 1983 Jeep CJ7

1 Answer

Brake proportioning valve

H Colin, The brake proportioning valve adjust the amount of effort required for maximum efficiency with different loads in the vehicle. The brakes in most vehicles are proportioned for approximately 60% front brakes and forty percent rear. The valve makes small adjustments to braking between front and rear. Regards john

Jun 16, 2013 | Ford Taurus Cars & Trucks

1 Answer

My 99 Plymouth grand voyager has a recurring brakes problem.What could be wrong?

Fixed--- I don't think so !!

3 Mechanics-that is sad

How about the power brake booster?
Was that checked & the vacuum check valve okey?

You wouldn't be happy if that solved the issue & you
got the valve off the wall on a trip thru the parts store
& installed yourself

What about ABS Issues?

What happens if you command the valves open
with a scan tool,bleed system & test drive with scanner
and valves still open or disconnect the motor to it & drive
around a few days.

I remember a load leveler valve under the back on
the drivers side on some caravans?

The fluid has to go somewhere,if not back into the reservoir,
then the abs unit maybe.

Better check the not leaking part yourself, unless you don't
loose any fluid

You bleed them there okey for 3 days,why,that is the key,
then what?

Oct 02, 2012 | 1999 Plymouth Grand Voyager

1 Answer

Put in new calipers and brake pads but I am getting no pressure on the passenger side front brakes. Tried bleeding the brakes but I am getting nothing from the bleeder on the passenger side, no air or...

it sounds like you are having trouble with one of the centering valves
trace the line back to the valve if it is off to one side most times you
eather have a broken brake line or air in the line but the centering
valve tells all

Oct 15, 2011 | 1998 Plymouth Voyager

1 Answer

Installed new master cly.,bench bled, bled rr, broke off lr bleed valve (not opened), bled rf, tried bleeding lf but getting no fluid to caliper. is problem with proportiner valve?

The problem is probably that you must do the lr before moving to the front. The air in the lr will make it too spongy to bleed the front.
A wheel cylinder is only $25, so you might as well just replace it. And if you use vasoline or brake lube on the bleeder, it will not rust up on you next time.

Proportioning valves are not supposed to block a bleed. They can malfunction, but should not supposed to. And if you have the back working, that should reset the proportioning valve anyway. You can't leave the back. It must be finished.

Jun 07, 2010 | 1990 Plymouth Voyager

2 Answers

1999 Plymouth Breeze - rear brakes locking up

You have a proportioning valve stuck. From the master the brake lines will run down the wheel well to another valve then out to the front calipers and rears when the prop valve sticks or freezes it then causes the rear or front system to lock up or not proportion the system evenly. 2. If that is not the case you may have contamination in the lines or the rubber brake hoses whick allow fluid to pass through it will not allow it to return almost acting like a back check valve therefore keeping you brakes on.

Jul 13, 2009 | 1997 Plymouth Breeze

1 Answer


Sounds like a proportioning valve, it controls how the fluid is dispersed between the brakes.

May 07, 2009 | 1998 Plymouth Voyager

1 Answer

93 Plymouth Voyager Bendix-10 ABS failure. Chrysler will not acknowledge parts unlimited warranty for actuator piston and pump assembly per NHTSA Campaign ID Number 96V099000. What can I do?

I have had the same problem on two Chysler vans..(1993 and 1994).. the ABS brakes on these cars are the pits.. Dodge will charge you big $$$ to replace the whole unit (which will break again).. plus they don't honor LIFE TIME warranty... The solution..
Rip out the ABS..and put normal brakes's not big deal and will cost about $150. You need a Brake Booster, Master Cylinder, Proportion valve and a Brake pedal... and a Saturday.. I've done it twice now.. I got all the parts (via the internet) from a junkyard in illinois (a common 'Kit" that they sell)

Mar 18, 2009 | 1993 Plymouth Voyager

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