Technical Car Experts Answers everything you need: brake pads

Brake pedal got loose,the pedal is fine when engine is off,but goes to floor when car is started.

The problem started after replace rotors and pads.This indicates,the part replacing is not done properly.

Clamp off the front brake hoses one at a time and see which wheel is causing the trouble.Also double check the pad installation and bleed the caliper.

Use a set of vise grips to clamp the brake hoses.
Look carefully at the brake pads and the rotor when you step on the brake pedal does the rotor flex back and fourth, Also check to make sure you do not have intake or a twist in the brake hose.

But if all checks out to be ok,then problem is possibly the master cylinder.It has to be inspected and replaced.

This will help.

Thanks.

See below latest solved car problems:----

How to replace Brake Power Booster?

http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-brake-power-booster.html

1997 Chevy Tahoe Brake lights not working?

http://technoanswers.blogspot.in/2012/02/1997-chevy-tahoe-brake-lights-not.html

How to service Drum brakes?

http://repairhelpcenter.blogspot.in/2012/02/how-to-service-drum-brakes.html

What type of problems usually noticed on Drum brakes?

http://repairhelpcenter.blogspot.in/2012/02/what-type-of-problems-usually-noticed.html

How to test Drum Brakes?

http://repairhelpcenter.blogspot.in/2012/02/how-to-test-drum-brakes.html

Brake Bleeder Screw Function?

http://repairhelpcenter.blogspot.in/2012/02/brake-bleeder-screw-function.html

Replacing ABS unit on Buick Century?

http://technoanswers.blogspot.in/2012/02/replacing-abs-unit-on-buick-century.html

How to Deactivate Airbag system on Ford Ranger?

http://technoanswers.blogspot.in/2012/02/how-to-deactivate-airbag-system-on-ford.html

Brake pedal is pulsating and vibrating?

http://repairhelpcenter.blogspot.com/2012/01/brake-pedal-is-pulsating-and-vibrating.html

All types of brake problems and repairs

http://howtobyme.blogspot.com/2011/11/abs-and-service-light-comes-on.html

What is Brake Drum Bar?

http://repairhelpcenter.blogspot.in/2012/02/what-is-brake-drum-bar.html

ABS light stays on but brakes work fine?

http://howtobyme.blogspot.com/2011/11/abs-light-stays-on-but-brakes-work-fine.html

VCS maintenance required on Toyota Camry?

http://howtobyme.blogspot.com/2011/11/vcs-maintaince-required-on-toyota-camry.html

VCS and ABS lights go on and off intermittently on Lexus?

http://howtobyme.blogspot.com/2011/11/vcs-and-abs-lights-go-on-and-off.html

ABS & Brake lights warning indicator steady on dash and speedometer not working for Dodge Ram?

http://howtobyme.blogspot.com/2011/11/abs-brake-lights-warning-indicator.html

Isuzu rodeo speedometer is jumping?

http://schematicsdiagram.blogspot.com/2012/01/isuzu-rodeo-speedometer-is-jumping.html

E-brake is stuck down on Ford Focus?

http://schematicsdiagram.blogspot.com/2011/12/e-brake-is-stuck-down-on-ford-focus.html

Brake warning light comes on and car will not start intermittently?

http://repairhelpcenter.blogspot.com/2011/12/brake-warning-light-comes-on-and-car.html

When the car stops, abs pump turns ON?

http://howtobyme.blogspot.com/2011/12/when-car-stopsabs-pump-turns-on.html

Where is Power Brake Booster located on 1995 Lincoln Town Car?

http://howtobyme.blogspot.com/2011/12/where-is-power-brake-booster-located-on.html

Sometimes ABS light comes on while Driving?

http://howtobyme.blogspot.com/2011/12/sometimes-abs-light-comes-on-while.html

How Anti-Lock Brakes Work?

http://technoanswers.blogspot.com/2011/11/how-anti-lock-brakes-work.html

Brake System Troubleshooting?

http://technoanswers.blogspot.com/2011/11/brake-system-troubleshooting.html

Car Brake lines have no pressure?

http://schematicsdiagram.blogspot.com/2011/12/car-brake-lines-have-no-pressure.html

Car Brakes Dragging?

http://repairhelpcenter.blogspot.com/2011/12/car-brakes-dragging.html

Car Brakes grabbing?

http://repairhelpcenter.blogspot.com/2011/12/car-brakes-grabbing.html

Car Brakes Making Noise?

http://repairhelpcenter.blogspot.com/2011/12/car-brakes-making-noise.html

Car Brakes Pulling?

http://repairhelpcenter.blogspot.com/2011/12/car-brakes-pulling.html

Pulsating Brake Pedal?

http://repairhelpcenter.blogspot.com/2011/12/pulsating-brake-pedal.html

Spongy brake pedal?

http://repairhelpcenter.blogspot.com/2011/12/spongy-brake-pedal.html

Hard Brake Pedal?

http://repairhelpcenter.blogspot.com/2011/12/hard-brake-pedal.html

How to Disconnect Power to EBCM on Pontiac Grand Prix?

http://schematicsdiagram.blogspot.com/2011/12/how-to-disconnect-power-to-ebcm-on.html

Where is ABS/TCS module located on 2005 Cadillac Deville

http://schematicsdiagram.blogspot.com/2011/12/where-is-abstcs-module-located-on-2005.html

How to Replace Power Brake Booster on 1996 GMC Jimmy?

http://schematicsdiagram.blogspot.com/2011/12/how-to-replace-power-brake-booster-on.html

Isuzu Trooper Shifts hard and Engine Revving in stop?

http://schematicsdiagram.blogspot.com/2011/12/isuzu-trooper-shifts-hard-and-engine.html

What is Brake Bleeder Screw?

http://repairhelpcenter.blogspot.com/2011/12/what-is-brake-bleeder-screw.html

How to replace car Brake Cable?

http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-car-brake-cable.html

How to Replace Brake Disc?

http://repairhelpcenter.blogspot.com/2011/12/how-to-replace-brake-disc.html

ABS motor keeps running?

http://schematicsdiagram.blogspot.com/2012/01/abs-motor-keeps-running.html

Anti-lock brake light stays on all the time?

http://technoanswers.blogspot.com/2012/01/anti-lock-brake-light-stays-on-all-time.html

Is it necessary to replace Brake caliper while replacing rotors and brake pads?

http://repairhelpcenter.blogspot.com/2012/01/is-it-necessary-to-replace-brake.html

Emergency brake Adjustment for Hyundai Tiburon?

http://schematicsdiagram.blogspot.com/2012/01/emergency-brake-adjustment-for-hyundai.html

How does Brake Backing Plate works?

http://repairhelpcenter.blogspot.in/2012/02/how-does-brake-backing-plate-works.html

Engine accelerates when brake is applied?

http://technoanswers.blogspot.in/2012/02/engine-accelerates-when-brake-is.html

Loss of acceleration?

http://technoanswers.blogspot.in/2012/02/loss-of-acceleration.html

1996 Chrysler LHS brake light circuit wiring diagram?

http://technoanswers.blogspot.in/2012/02/1996-chrysler-lhs-brake-light-circuit.html

How to replace rear brake pads on 2002 Lincoln continental?

http://technoanswers.blogspot.in/2012/02/how-to-replace-rear-brake-pads-on-2002.html

Brake pedal firm when engine not running goes to floor after engine starts?

http://technoanswers.blogspot.in/2012/02/brake-pedal-firm-when-engine-not.html

I have seen some cars needing a brake job at 25K miles and some not until 70K miles, just depends on the driving habits.

In brakes system there are many components.
This are few assembly and dis-assembly instructions direct procedures for Lexus brake components.
Go through all the components one by one, so it will give you complete detail of how to replace the brake parts when you face brake related problem in your Lexus.

2001 Lexus Ls 430.
Removing and installing procedure for
Lexus: Anti-lock Brake System Actuator?

Click the link below:---

http://howtobyme.blogspot.com/2011/10/lexus-anti-lock-brake-system-actuator.html

2001 Lexus IS 250 and IS 350.
Lexus: Actuator replacing for Anti-lock Brake System?

Click the link below:---

http://howtobyme.blogspot.com/2011/10/lexus-actuator-replacing-for-anti-lock.html

2001 Lexus ES 300 :---
How to replace ABS Actuator on 2001 Lexus?
Click the link below:---

http://howtobyme.blogspot.com/2011/10/how-to-replace-abs-actuator-on-2001.html