2007 MAZDA MAZDA6 Engine And Engine Coolingexhaust System Problems

MAZDA6 2007 MARCH: CAR LOSES POWER FOR NO APPARENT REASON AND WITH NO WARNING. IT MAY BE A FAULTY EGR VALVE. WHEN FAILURE HAPPENS THE CAR WILL NOT ACCELERATE. THIS HAS HAPPENED ON NARROW ROAD AND ON MOTORWAY WHEN OVERTAKING. BOTH TIMES OTHER ROAD USERS HAVE HAD TO TAKE EVASIVE ACTION TO AVOID HITTING MY CAR AS IT SLOWED. *TR

PURCHASED BRAND NEW 07 MAZDA 6WITH 41 MILES ON IT ON JUNE 30, 2007. AS OF JULY 2, 2007 WAS RETURNED TO THE DEALERSHIP SERVICE DEPT WITH ONLY 150 MILES. HEARD A RATTLE COMING FROM THE AREA OF THE CONVERTER, AND ALSO A HIGH PITCHED SPEALING COMING FROM THE ENGINE AREA WHEN THE VEHICLE WAS STOPPED AND ONLY IN REVERSE AND DRIVE AND WHEN THE VEHICLE GETS HOT. SERVICE DEPT. REPAIRED SOME SPRINGS AND A DOUGHNUT SEAL IN EXAUST PIPE GOING TO THE MANIFOLD. PICKED CAR BACK UP ON JULY 5, 2007 WITH NOW 170 MILES ON IT, DROVE HOME ABOUT 7 TO 8 MILES AND HEARD THE SAME RATTLING AND HIGH PITCHED SQUEALING, ONLY IT WAS WORSE, ALSO NOW THE VEHICLE FEELS LIKE IT'S SLUGGISH, AND NOTICED THAT WHILE DRIVING ONCE AGAIN BACK TO THE SERVICE DEPT. THAT DAY, WHILE ON THE HIGHWAY DRIVING 55 MPH AND TRYING TO...