2008 INFINITI G35 Engine And Engine Cooling Problems

CAR WAS JERKING WHILE DRIVING. I WENT TO THE DEALER, WAS TOLD THAT A RADIATOR LEAKED TO THE TRANSMISSION, AND RUINED IT. DEALER FLASHED TRANSMISSION, BUT LATER I HAD "CHECK ENGINE" WARNING. I WENT BACK, DEALER TOLD ME THAT THIS IS BECAUSE OF A BAD TRANSMISSION. THIS IS NOT SAFE TO DRIVE A CAR IN THIS CONDITION. I STILL HAVE A POWER TRAIN WARRANTY, BUT NISSAN REFUSES TO REPAIR TRANSMISSION, BECAUSE, THEY SAY, TRANSMISSION PROBLEM WAS A SECONDARY ONE, AND THE PRIMARY WAS A RADIATOR. NISSAN TWICE REFUSED TO REPAIR UNDER WARRANTY. *TR

I RECENTLY PURCHASED THIS CAR FROM A NISSAN DEALERSHIP AND IT HAPPENED ON THE FIRST AND SECOND DAY OWNING IT. THE FIRST DAY HAPPENED WHEN I PULLED INTO THE GAS STATION TAXING TO THE GAS PUMP AND ALL THE SUDDEN, THE STEERING WHEEL STARTED TO GET HARDEN. I LOOKED AT THE RPM GAUGE AND IT WAS DOWN TO ZERO WHILE I WAS IN "D" MODE. SO SHIFTED TO PARK AND RESTART THE ENGINE, THEN IT WORKS AGAIN. THE SECOND INCIDENT HAPPENED WHEN I WAS AT A STOP SIGN TURNING RIGHT. IMMEDIATELY AFTER RELEASING THE BRAKE PEDAL, I TURNED THE STEERING WHEEL AND THE ENGINE STALLED; THEREFORE, THE STEERING WHEEL WAS HARDEN. THEN I SHIFT BACK TO PARK AND RESTART AGAIN. I'M NOT SURE IF THIS IS COMMON TO ANY G35X BUT THIS IS A SAFETY ISSUE. I DO NOT WANT TO IMAGE MYSELF GOING INTO A ROUND-ABOUT AND THE CAR...

NEW VEHICLE DRIVEN ONLY 4K MILES WHEN NOISES STARTED EMANATING FROM THE ENGINE COMPARTMENT ANYTIME RPMS EXCEEDED 4000. DEALER DIAGNOSED PROBLEM AS A BURNED OUT TRANSMISSION REQUIRING REPLACEMENT. HAD THE TRANSMISSION SEIZED UP WHILE DRIVING, IT COULD HAVE LED TO A VERY DANGEROUS SITUATION. *TR