2007 Mazda CX-7 Brakes Problems

WHEN I APPLIED THE BRAKES THE BRAKE PEDAL WOULDN'T DEPRESS, AND I COULDN'T STOP THE CAR QUICKLY. FORTUNATELY I TRIED PUMPING THE BRAKES WHICH WORKED. THE CAR GOES INTO THE MAZDA DEALERSHIP TOMORROW FOR REPAIRS. THE VEHICLE IS A MAZDA CX-7, 2007 MODEL, WITH APPROXIMATELY 25,000 MILES ON IT. *TR

I HAVE A 2007 CX7 MAZDA AND APPROXIMATELY 3 WEEKS AGO, WHILE @ A STOP SIGN THE ENGINE REVVED UP. THREE DAYS LATER @ A RED LIGHT, THE ENGINE AGAIN REVVED UP WHILE MY FOOT WAS ON THE BRAKES. THIS TIME THE CAR MOVED FORWARD TOWARDS THE CAR IN FRONT OF ME. I PLACED THE CAR IN PARK AND THE CAR CAME BACK TO NORMAL. THEN ON APRIL 21ST, WHILE REVERSING THE CAR INTO A PARKING SPACE IN FRONT OF THE LOCAL LIBRARY, THE CAR AGAIN REVVED UP AND WAS REVERSING. MY FOOT WAS AGAIN ON THE BRAKES. AFTER THE SECOND OCCURRENCE, THE CAR WAS TAKEN TO THE DEALERSHIP AND NOTHING COULD BE FOUND. A VEHICLE DATA RECORDER WAS INSTALLED. THE CAR WAS RETURNED TO THE DEALERSHIP AFTER THE THIRD OCCURRENCE. A NEW ACCELERATOR PEDAL IS BEING INSTALLED ALTHOUGH THE EXACT CAUSE OF THE PROBLEM IS STILL UNKNOWN. *TR

I WAS DRIVING ON A SNOW-PACKED INTERSTATE HIGHWAY WHEN THE CAR AHEAD OF ME STOPPED. I APPLIED THE BRAKES IMMEDIATELY. MY SPEED WAS ABOUT 25 MPH. THE ANTI-LOCK BRAKING SYSTEM IMMEDIATELY RESPONDED, BUT MY SPEED DID NOT DIMINISH APPROPRIATELY. I STRUCK THE CAR AHEAD. ABOUT 20 MINUTES LATER, I TRIED TO STOP AT A RED LIGHT AND THE VEHICLE SEEMED TO CONTINUE WITH LITTLE OR NO BRAKE FORCE ACTUALLY BEING APPLIED. THE ANTI-LOCK SYSTEM SEEMED OVERLY SENSITIVE. *TR

VEHICLE HAS MINIMUM BRAKING EFFORT ALLOWED DURING ACTIVATION OF ANTILOCK BRAKES. BRAKING DISTANCE IS 105 FEET (MEASURED) FROM 25 MPH TO ZERO WITH ANTILOCK BRAKES APPLIED ON SNOW COVERED ROAD. VEHICLE MUST DECELERATE TO BELOW 20 MPH BEFORE ANTILOCK SYSTEM IS DEACTIVATED AND VEHICLE WILL COME TO A COMPLETE STOP. VEHICLE IS UNSAFE TO OPERATE DURING LESS THAN PERFECT DRIVING CONDITIONS. *CN