Question about Buick LeSabre

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Wheres the remote proportioning valve on 2005 buick lesabre

Getting ready to replace the master cylinder and read about remote proportioning valve attempted to bleed brakes and having trouble with soft pedal

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  • Buick Master
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Just work as though it wasnt their and stop getting technical and worring about things that dont concern you with changing the master cylinder as this is the cause of the soft pedal ,the internal seal between fron and rear chambers has failed causing the soft pedal now no excuses get out and do it and stop looking for any excuse not to do the job it will not get done by talking about it

Posted on Jan 03, 2013

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Posted on Jan 02, 2017

  • 474 Answers

SOURCE: my 94 c1500 has very

You still have air in the system. You will have to bleed more. I had to bleed a quart of brake fluid out of each wheel to get good brakes on my 1996 GMC.

Posted on Jul 29, 2010

  • 11 Answers

SOURCE: REAL LOW BRAKE PEDAL. WHEN BLEEDING BRAKES I KEEP

I've got a 2000 ram had the same problem.... first i changed the master cylinder .... i thought it was the abs valve ... before i spent the $200..... i asked a buddy he said the brake booster was bad changed it and the pedal felt like it did when the truck was new....

Posted on Nov 20, 2010

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1 Answer

Brake proportioning valve


It could be your break line is clogged with air bubbles or your brake pads/shoes are contaminated. If not that I'd say you need to replace your master cylinder. You can buy a used master cylinder online for pretty cheap.

Sep 17, 2013 | 2001 Buick Regal

1 Answer

Not getting break fluid to the back lines


Hmm, well you're not telling us much like the make model year? Anyway to take a stab at it you may have a bad master brake cylinder or even a bad proportioning valve. Check to see if you have pressure at the proportioning valve. If so then the master cylinder is fine and your proportioning valve needs to be replaced. But if there isn't any pressure there then of course it's your master cylinder. But again since I don't know anything about your vehicle I'm assuming it's an older one with a standard type of braking system. As you get newer then you get into much more things that could go wrong.

Nov 22, 2012 | Cars & Trucks

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

1 Answer

95 Buick LeSabre, brakes will only hold for a week then have to re bleed the system.has new master cylinder,Any ideas


Check all your brake lines especially those going to the bleeder valve where you find the most air when bleeding. Also check for leaks at the rear of the master cylinder and at the calipers and wheel cylinders. If either half of the master cylinder is going low, that shows you there is a leak somewhere. If it's staying full, I'd suspect the master as having an internal bypassing problem.

May 27, 2011 | 1995 Buick LeSabre

1 Answer

Air in brakes. tried to bleed them and they still go all the way to the floor. what do i do?


Make sure you have all leaks are fixed and the brake fluid full. If so find your proportioning valve normally under the master cylinder where you fill the brake fluid. Tap on the valve with small hammer while someone is pumping the brake pedel fast and hard. Then try bleeding the brakes again.

Nov 05, 2010 | 1994 Buick LeSabre

1 Answer

I need a break line diagram for 1995 ford countur


It doesn't connect to master cylinder. The line should connect to a proportioning valve, then from valve to master cylinder.Star at master cylinder and follow lines to proportioning valve.

May 25, 2010 | 1995 Ford Contour

2 Answers

The two round cylinders that are on a 1988 Buick lesabre master cylinder that screw into the master cylinder and the brake tubing screws into them - What are they called, what do they do, can they be...


they are called brake proportion valves,they are not serviceable.they are different part #s for front & rear brake lines.check with your local buick dealer

Mar 23, 2010 | 1988 Buick LeSabre

2 Answers

Brake pedal goes squishy and fluid in the front of the engine on top..not back by the master cylinder


If you look down under the radiator in the area of the power steering pump, nestled in the crossmember you should see some brake lines going in and out of a rectangular steel block. It should also have a single wire going in the top. That is the proportioning valve which adjusts brake pressure to the wheels. One of these lines is likely the source of your leak. Hope this helps.

Sep 07, 2009 | 1997 Buick LeSabre

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