Question about Chrysler New Yorker

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I have a es300 lexus with a brake fault ,i have tested everything while the car is stationary and all tests apear ok...the problem is at times the brake pedal goes hard and the car is really hard to stop,lucky the first time it happened no one was in front,it will go back to normal but this is happening to often to drive safely...please help i was thinking it might be the booster...

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Hi George, Your problem very well may be caused by the booster failing. The problem could be a broken or loose connection of the pipe or one way valve between the intake manifold and booster. A leaking intake manifold gasket could also result in booster failure. I suggest taking the vehicle for diagnosis and repair as soon as possible. Another common fault in braking systems is failure of the return seal in the master cylinder. If that happens the common symptoms are a hardening of the brake pedal together with the brakes locking up after a few applications of the brakes. Regards John

Posted on Oct 13, 2013

Testimonial: "thanks john,i removed the abs fuse and completely flushed the brake lines,all working good now ,but not sure for how long...thanks."


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Posted on Jan 02, 2017

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SOURCE: 97 sierra ABS problem

ABS comes on all by it self at low speed braking, A GM defect with their brakes!!!! Sensor thinks the tires are locking up an puts on the ABS, my advice pull the ABS fuse the brakes work better!!!!! Sensor is **** never had a problem with my Honda's ABS I sent a letter to GM 0 response, never will buy one again!!!

Posted on Feb 28, 2009

  • 231 Answers

SOURCE: Bad Brakes

I would be looking at the ABS valve. one way to test the booster is to start the vehicle while you ae depressing the brake pedal, you should feel the brake pedal drop a little bit, this is a sign that the boostr is working properely. you may want to check to see if there is any air in your system as well.
hope that this helps.

Posted on Oct 16, 2008

  • 1 Answer

SOURCE: 97 ford e350 brake pedal goes to the floor...

1992 Ford E350-same brake concern, pedal goes to floor! Replaced master cylinder, brake booster, frt pads and rotors. Replaced rear shoes wheel cylinders, and drums, vehicle stops but pedal goes to floor, squeaze off rear flex hose and pedal is solid. Takes 2 > 3 pumps normally to get hard pedal then goes to floor, wouding in longer brake wheel cylinder pins would fix the problem???? P/S hope you can help.

Posted on Nov 17, 2008

  • 97 Answers

SOURCE: brake pedal pressure "whistling" whether totally stopped or braki

There is a seal where the rod from the booster connects to the foot pedal that is probably leaking

Posted on Jul 26, 2009

  • 252 Answers

SOURCE: 96 Lexus ES300 When you depress the brake pedal,

Hi there

Few things: When you say it 'slides' to a stop. Do you mean the pedal sinks to the floor with the same pressure as you first applied? If so, the master cylinder needs an overhaul or a replacement, as the seal around the plunger/piston has deteriorated.

If that is not the case, and you get a pulsating feel through the brake pedal, this is the ABS working. If it is not an emergency stop, then the rear brake pads are low, which causes the ABS to trigger too early (and by the sounds of it it is the left rear brake pad).

Seems odd how Toyota mechanics could not work that one out, they own Lexus. Alas, if it's not on their fool-proof computer screen then they pass the buck.

Good luck and please vote for me if this helps you.

Posted on Jun 30, 2010

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