Question about 1993 Mercedes-Benz 190

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I have replaced a master cylinder on a Sprinter x reg 412

I have replaces a master cylinder on a Speinter x reg 412 with abs had bad pedal before and after fitting new cylinder any suggestions? Have bled with pressure machine

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Hello,good day,hoping no air in the system,try to check your vacuum side,vacuum pump or hoses,ty

Posted on Aug 29, 2009

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With some abs systems you have to do an intesive bleed but you need the mercedes star diagnostics machine because its a set programme.

Posted on Jun 27, 2009

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1 Answer

Abs brake system


Best case scenario bad vacuum pressure to the brake booster. Worst case bad abs control module or valve body/motor the abs system works by add and removing hydraulic pressure through valves and electric motor. Try using block off plugs at the master cylinder( remove lines plug outlets at master cylinder) check if brake pedal position and pressure is good(if there is no change problem is master cylinder or brake booster/ vacuum) if plugging at master cylinder solved issue repeat procedure at abs valve body after reinstalling lines from master cylinder if your problem returns your issue is in the abs valve body if plugging at the abs solves problem reconnect at the valve body bleed each line one by one testing between each line until you find the problem

Apr 11, 2014 | Hyundai Cars & Trucks

1 Answer

1999 corolla, brake pedal goes to the floor. how can we fix the brakes?


is the abs light on?the abs system only effects the pedal when you are stopping quickly to activate the system. you still have a hydrualic brake pressure problem. are the rear brakes shoes or pads? rear shoes out of adjustment can cause a low brake pedal.even though the master cylinder has been replaced doesn't mean you got a good part.if the part was a remanufactered part very likely it is bad. to determine if it is the master cylinder, plug off the lines from the side off the master cylinder and hit the brake pedal. if the pedal stays up look for a problem elsewhere in the system. if the pedal drops the the master cylinder is defective.

Jun 11, 2012 | Toyota Corolla Cars & Trucks

1 Answer

BRAKES BLED PEDAL GOES TO FLOOR WHEN STARTED


if a master cylinder is bad and you are sure you have all the air out and no leaks.pedal will go to floor , running or not. if booster is bad it will cause a hard pedal. but if master cylinder is bad it will turn on a brake light on dash if it works. make sure the wheel cylinders are not leaking. I beleive that the master cylinder is bad, or you have a leak somewhere. If the master cylinder is functioning properly, the brake pedal will depress to a certain depth and no further.

Apr 20, 2012 | 2000 Chevrolet Blazer

1 Answer

2007 dodge sprinter van brake bleeding


SOME SPRINTERS HAD RECALLS ON MASTER CYLINDERS YEARS 2006-2009 CHECK DEALER FOR MAYBE RECALL,IAM NOT SURE WHY YOUR BLEEDING THE BRAKES IF YOU HAD OPENED A LINE OR CHANGED A CALIPER THERE MABE AIR IN THE LINES-I ALWAYS USE A PRESSURE BLEEDER OR YOU CAN GRAVITY BLEED SYSTEM BY OPENING EACH BLEEDER SCREW UNTILL GOOD FLOW THEN CLOSEING-IF BLEEDING FOR MUSHY PEDAL CHECK BRAKES AND THICKNESS OF ROTORS-ARE THEIR ANY CODES -IS THE ABS LIGHT ON-IF ALL CHECKS OUT GO TO MASTERCYLINDER

Dec 30, 2011 | 2007 Dodge Sprinter

1 Answer

2000 Chrysler Grand Caravan, replaced the front driver brake caliper, the brake lines from the master cylinder to the ABS and the rubber hose from the caliper to the brake line, bled all the brakes but the...


i suggest a bad master cylinder, but 1st answer this, when you apply brakes firmly and keep pressure on the brake pedal, does pedal go down while you're holding pressure on the pedal? if so, the master cylinders bad. and also have you checked the vacum to the brake booster?

Aug 24, 2010 | 2000 Chrysler Grand Voyager

1 Answer

Soft brake pedal


yes brakes need to bleed again starting with the caliper farthest from master cylinder abs pump is fine

May 27, 2009 | 1993 Volvo 940

1 Answer

Replaced master cylinder bled as per specs but have dead pedal intermitantly. does this have to do with the abs system needing bled, if so how is that done.


Try changing the brake booster. The abs has nothin to do with the brake pedel. All the abs does is electronically adjust pressure applied to each wheel to keep the wheels from lockin up and sliding. You've either got a bad master cylinder or your brake booster is bad

Apr 30, 2009 | 1995 Honda Accord

1 Answer

1999 Chevy S10 Blazer 4x4. Replacing rear pad's,& Bleeding Breaks


have one person in the blazer pumping the brake pedal and then hold to the floor, crack the bleeder then tighten, release pedal, repeat till all air is out one side at a time, if this does not work then your ABS unit is bad witch if u follow your lines from your master cylinder u will find a black box with a motor on it, or the master cylinder itself is bad, it also can cause u to have no pedal, replace the master cylinder first, most likely cheaper.

Mar 11, 2009 | 1997 Chevrolet S-10 Pickup

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