MY MAZDA MPV IS JUMPING WHEN I HAVE TO STOP. WHEN GOING DOWN THE HIGHWAY I DON'T HAVE ANY PROBLEMS.THE CAR IS NOT RUNNING HOT AND MY OIL HAS JUST BEEN CHANGED. MY TRANSMISSION LIGHT IS BLINKING . ANY HELP WOULD BE APPRECIATED.
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Re: car jumping when brake is applied
I'm pretty sure that your front rotors are warped. Is tis problem only happening when you apply the brakes? If it is, replace the front pads and get new rotors. Be sure when you install the front tires back on, torque the wheels to 90 lbs.
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Probable culprit would be the electric solenoid that releases the gear shift linkage when you apply the brake pedal. Since it's electric, a dead battery will cause the same result. Check to see if your brake lights are working. If not try replacing your brake light switch as this also gets power to the above mentioned solenoid.
This is a safety feature to prevent children from accidentally putting a car in gear.
I was browsing unsolved problems. If you still have the problem, I'll try to help you. But it's going to be awhile trying to communicate back and forth. First...Check the engine for spark. Take off a plug wire and stick a screw driver in the wire end and place the metal part of the screw driver next to something on the van that's metal. Have someone crank it over for just a second or two and see if a small spark jumps from the screw driver to the metal part. I'll check back for your answer.
This could be caused by the brake pads wearing down so far that the metal rivets that hold it together are now rubbing on the rotor. It could also be glazed pads or excess builup of brake dust. I would recommend checking brake pads first. If they are still good clean them, and maybe apply some brake pad goo. They sell that to help stop brake squeal at most auto parts stores.
we had a very similar problem on our 2003 mazda mpv. at first we were also told coils. we changed all the coils out and the problem came back. we found out that it was a leak in the egr valve and gasket. there was also another leak found after that. when the leaks were fixed, the problem stopped. i suggest checking for leaks in your engine, this could be the problem.
I had a Mazda 626 with a similar problem, the car seemed to 'shut down' with no warning, even at highway speeds, as if I just turned the ignition key to 'Off'; After trying to fix it unsuccessfully by replacing several electrical parts, the problem was found to be a defective ignition switch, it was replaced and the problem went away.
you could have a brake booster issue. you can do a simple test on another car by leaving the engine off and press the brake repeatedly 3 or four times will use up the vacuum in the brake booster. Once you have done this does it feel like the brake pedal in your van?