Question about 1991 Mercury Cougar

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My ex wife put power steering fluid in the brake master cylinder and drove the car across town..... what should i do

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Immediately **** out the contents of the master cylinder, replace with fresh brake fluid, and flush the system.

Flushing can be done by doing a good old fashioned manual bleeding consisting of one person opening and closing the bleeder screws and one person working the brake pedal or many shops will have a brake flush machine that will make quick work of the job.

The P/S fluid in the brake system will cause the seal to bloat and eventually fail. We see several cars every year that this happens to. If its caught early a system flush will take care of it. If ignored everything gets replaced (master cylinder, brake hoses, calipers, and wheel cylinder). We have had a few over the years that where ignored for so long that the brakes eventually locked up.

Posted on Sep 30, 2010

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My 99 explorers fuel pump went bad so i had to push it out of a parking lot. My wife got behind the wheel and took it out of gear and we started pushing i looked down and noticed that the reverse ligh


I doubt it. The brake system would not know or care what the transmission was doing.
You could move the truck with the trans in reverse as long as it was not running. No difference from being in drive or reverse.
I have pushed power steering fluid out of the pump by turning the wheel with the engine off, but never brake fluid from the master cyl.

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Can i put brake fluid in my power steering 94 plymouth grand voyager?


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Put power steering fluid or automatic transmission fluid (dextron)

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Bleed power steering/brake unit 2002 GMC Sierra 3500


The slash that you placed between the words steering/brake have me concerned. I certainly hope you did not think that these two systems are co-joined? The power steering system is a hydraulic system completely separate and isolated from the brake system. They also use two completely different types of fluid. Putting brake fluid in the power steering system would destroy it just as putting power steering fluid in the brake master cylinder will destroy it. The type(s) of rubber used in the seals for each of these systems demands they use their own fluid. Any cross-contamination will require a complete draining, cleaning, and replacement of ALL rubber components and seals. This would include the power steering pump and rack for the power steering system, and for the brake system the master cylinder, all calipers and wheel cylinder as well as the proportioning valve. If there is an ABS unit, it will need serviced as well.

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Brakes had power steering fluid


Power steering should still work fine. I would say there is still air in the line, or it is bypassing inside the master cylinder.

May 12, 2013 | 2001 Oldsmobile Alero

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I accidentally put power steering fluid in my master cylinder. What should i do?


take something like a turkey baster and remove the fluid from the master, then reverse bleed the entire system. Power steering fluid WILL ruin anything in the brakeing system with rubber type parts.

Jan 12, 2011 | Chrysler Town & Country Cars & Trucks

1 Answer

I need to top up the power stering fluid and need to know what tipe to use 1988 chevy silverado C3500 454 The power steering looks like it is incorperated into the brake booster


power steering is at the front of the engine and runs on the belt. The reservoir cap looks like this:
73b4b95.jpg To top off steering fluid, use standard steering fluid.

The reservoir in front of the brake booster is the brake master cylinder reservoir. To refill, use standard brake fluid. If it the truck is using brake fluid, check for leaks at the back of the master cylinder and at all wheels.

Please let us know if you have more questions.

Sep 25, 2010 | 1988 Chevrolet Silverado 2500

1 Answer

What is the best way to compress my 2008 Town & Country brake caliper? It doesn't seem to move when I use a c - clamp.


Open the bleeder valve,put an old brake pad across piston,and use clamp.
Remove some fluid from master cylinder,in case you push it back and over flow it.

May 21, 2010 | Cars & Trucks

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Location of the brake fluid input


the brake fluid resivoir is above the master cylinder on the firewall. so on the left side near the windshield. the power steering resivoir is closer to the front end and is distinguished by not being connected to the master cylinder..

Feb 08, 2010 | 1987 Mercedes-Benz 300-Class

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How to replace master cylinder. what is the relationship between it and the power steering?


If you have a hydor booster the power steering pump runs your power brakes, make sure power steering level is at max, to replace master cylinder, unscrew both brake line, then unbolt both nut that hold master cylinder 15mm nut's, remove master cylinder, fill new master cylinder with DOT 3 brake fluid, bench bleed new master cylinder, new master cylinder will come with a bleeder kit, before installing, then install new one.

Jan 28, 2010 | 1997 Chevrolet Astro

1 Answer

MY CAR WAS FINE THIS MORNING . MY WIFE PUT BRAKE FLUID IN AND NOW I AM HAVING SOME MAJOR PROBLEMS. THE BRAKES DONT WORK , NO REAL PRESSURE ON THE PEDAL AND THE CAR SMOKES ALOT. THE SMOKE IS ENOUGH TO...


Sounds like she has a bad power brake booster/master cylinder. The master cylinder is leaking fluid into the brake booster which is sucked into the intake and burned which causes the smoke. Put a new booster and master cylinder on, and problem will be fixed.

Jun 09, 2009 | 1995 Acura Legend

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