Question about 1998 Buick Regal

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How to bleed brakes on 98 regal, I changed rear brake lines but I don't think fluid is going thru the proportioning valve or ABS. I am used to the older brakes ( 70's and down.)

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Sometimes you can tap on the proportioning valve while someone pumps the brake if nothing breaks loose you may have to replace the valve.

Posted on Aug 07, 2010

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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

No pressure on brake pedal 95 suburban 2500 4x4 7.4L


try bleeding your ABS block first, if that doesn not work could need a master or proportioning vavle. Some scan tools are capable of bleeding the ABS system on some vehicles, and some you have to bleed manually.

Apr 07, 2012 | 1995 Chevrolet Suburban

1 Answer

I just replaced the brake master cylinder and rear wheel cylinder on my 1987 toyota pickup, and now I have no fluid going to the back brakes. Bleeding them does nothing


check for fluid before and after the proportioning valve by disconnection the line after the valve and applying the brakes, if no fluid after valve try before valve if fluid is there then it is a bad proportioning valve. you did bleed the master cylinder before connecting the brake line and trying to bleed the brakes all at once right? If the master cylinder was not bled first then a lot of air may have been forced into the rest of the brake lines.

Oct 01, 2011 | 1987 Toyota Pickup

3 Answers

Why can't I get brake fluid to the back brakes?


faulty proportioning valve that runs off the mater cylinder

Sep 19, 2011 | 1997 Chevrolet Blazer

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

Need to rest my proportional brake valve on my 1996 sonoma 4x4 I replaced all the brake lines to the ABS, the ABS brake light stays on and I have only less than half the brake fluid flow at the rear


By the sounds of it you need to bleed your brakes the ABS light should go out by itself if this is done unless their is a ABS problem.Remeber when you bleed brakes that have ABS you must have the vehicle running when you bleed them.

May 03, 2011 | GMC Sonoma Cars & Trucks

1 Answer

Driver side brake not bleeding properly after bleeding left side and changing rotors, calipers, and pads?


first of all make sure master cylinder is full of brake fluid.then you crank car leave foot off brake pedal. watch abs light on dash it should turn off in 10 seconds if not have car towed to garage or dealer. they have to use a scanner to scan the abs brakes if abs light turn off in 3 seconds. then starting bleeding from master bleed the lower brake line fitting at the proportional valve followed by the upper brake line fitting. keep eye on brake fluid in mastercylinder dont let run dry.next prime the abs hydralic modulator.connect the bleeder hose to the rear bleeder valve on the modulator.place the other end into a container partially filled with cleab brake fluid.make sure the end of the hose is submerged.open the bleeder valve slowly about 1/2 to 3/4 turn have an assistant depress the brake pedal and hold it in the depressed position. when the flow of fluid ceases close the bleeder valve.repeat process until no air bubbles are present in the fluid.then tighten the bleed valve securely. start bleeding brakes. your bleeding sequence is right rear - left front - left rear - right front.WARNING IF ALL FAILS YOUR BRAKES DONT FEEL SOLID AND FEEL VERY SPONGY.DONT DRIVE CAR. HAVE IT TOWED TO DEALERSHIP.THEY WILL HAVE TO PRESSURE BLEED YOUR BRAKE SYSTEM.

Nov 17, 2009 | 1999 Oldsmobile Alero

1 Answer

Very little (almost nonexistent) rear brakes. Cannot stop rear wheels even with wheels off the ground. Replaced MC, wheel cyl.,Rubber hose, booster, proportioning valve, bypassed rear ABS, shoes, drums,...


What happens when you try to bleed the rear brakes? If nothing comes out, trace each line back toward the proportioning valve--something would be blocking flow of fluid. Disconnect each line at the forward end and see if fluid comes out of the valve openings. You will need a scan tool to complete the bleeding process with ABS. Suggest buying a Chilton's manual for this truck because of the complexity of the ABS system.

Sep 30, 2009 | 1997 Dodge Dakota

1 Answer

No brake fluid flow to right rear brake


the stratus is know for clasped rear brake hoses .This stops the flow off brake fluid. try opening the brake lines at the master cylinder that go to the rear.pump up brakes first! if you got fluid than check the brake line if this is rear disc brakes on the line at the rear will be a built in proportioning valve.if drum loosen rubber hose line before the rubber part to see if you have fluid. If you do replace the brake hose! On you 74 challenger by the way i love dodge! any way on the valve there is a small button on the front of the proportioning valve that pops out it needs to be tap in lightly. also hit the brake peddel kind of hard a couple off times if that doesn't work. thanks for your question


p.s that hex bar on the is a junction not a proportioning valve .

Apr 29, 2009 | 2001 Dodge Stratus

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