2002 MAZDA MAZDA6 Engine And Engine Coolingexhaust Systememission Control Problems

FROM THE DAY I DROVE MY NEW 2002 MPV HOME THE TRANSMISSION MIS-SHIFTED AND BUCKED. I CALLED THE DEALER THE FOLLOWING DAY AND THEY TOLD ME THAT "THE TRANSMISSION COMPUTER WAS LEARNING MY DRIVING HABITS AND IT WOULD GO AWAY. AFTER 3 MONTHS THE PROBLEM PERSISTED AND BEGAN STALLING AT LIGHTS. I TOOK THE CAR IN AND THEY SAID THEY COULD FIND NO PROBLEM. WHEN I ASKED THEM WHAT THEY NEEDED TO REPAIR THE PROBLEM THEY SAID THAT THERE WERE NO COMPUTER UPGRADES FOR THE TRANSMISSION AND I WOULD HAVE TO WAIT UNTIL THERE WERE. A YEAR PASSED AND IT CONTINUED TO BUCK AND STALL. I TOOK THE CAR IN AGAIN AND TOLD THEM I THOUGHT IT WAS A "LEMON" AND I WANTED IT REPAIRED. THEY TOOK THE CAR AND "FIXED IT" BUT IT HAS CONTINUED TO MIS SHIFT REGULARLY. AT AROUND 25,000 MILES THE ENGINE LIGHT CAME ON AND...