Question about Cars & Trucks
Changed the brake pads
Front rotors are warped. They come warped brand new in the box all the time.
Posted on Nov 18, 2014
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Posted on Jan 02, 2017
Is it possible that you are hearing the abs pump running in the engine compartment? It sounds like an ABS problem with one of your wheel speed sensors.
Posted on Mar 01, 2009
on the inside of wheel is a small bolt that bleeds the brake you my need a extra hand so some one can pump brakes, start from the back then the front, have person who is helping pump brakes a few times then tell to hold pedal down after confirm the pedal is down brake open the bleeder valve then close when fluid shoots out do this Intel feel brake pedal comes up a little after the one move to next bleeder valve. back to front.driverthen, passenger then move to the front and do same. this may help!!!
Posted on Mar 26, 2009
How hard are you stepping on the brake pedal? What you are describing sounds like the ABS system activating. When you step on the pedal hard enough to engage the ABS the light will come on, in some cars it will blink. You will also feel the thumping/vibration in the pedal since the system works by repeatedly engaging and disengaging the brakes. If it is happening when you step lightly on the brakes then you may have a bad wheel speed sensor or possibly a bad or miss-adjusted brake switch.
Posted on May 01, 2010
Well, guess I don't need to tell you this is dangerous and that your front Rotors are probably trashed.
This sounds like either a bad Master cylinder or a leaking Brake booster. There can also be a bad check valve on the Vacuum line plugging into the Brake booster. There is a rather large line with a plastic fitting, sometimes a 90 degree fitting on the end and the check valve is in the plastic
You can test the Brake booster with the engine running and using an approved Brake cleaner safe for rubber and plastics. Cover the outside bottom of the hood so spray does not get on your paint. Then spray around the Booster. If the engine RPM changes, you have a leak. Save the actuating rod, and replace the Booster. Spray the check valve, if RPM changes replace it.
Now for the Master cylinder, pressure gauges can be attached to the front fluid discharge to measure if the internal pistons are sticking. But you may spend more Labor in testing, than the part is worth.
My reasons for choosing these parts as defects are that your "Brake or ABS" warning lights are not on so the problem would be before those monitoring devices. The Vacuum system is not monitored and you hear hissing. The Master cylinder is not monitored before the ABS unit.
I hope you find my solution helpful.
Posted on Dec 01, 2010
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