NHTSA Complaint #10850510 — 2009 DODGE AVENGER

2009 DODGE AVENGER RPMS WOULD RISE AND FALL 200-300 AT IDLE. EXHAUST/MUFFLER WOULD RATTLE. HAVE BEEN TO MULTIPLE SHOPS AND THEY CANNOT DIAGNOSE THE PROBLEM. IT IS TAKING LONGER TO START UP. THE ALTERNATOR WAS REPLACED 2 MONTHS AGO. THE BATTERY WAS REPLACED LAST WEEK. YESTERDAY, IT WAS CHECKED BY AN AUTOZONE EMPLOYEE FOR CODES AND NOTHING CAME UP. I STARTED THE CAR AND IT QUICKLY DIED THERE AFTER. DROVE IT AROUND ALL DAY AFTER THAT AND NOT A PROBLEM. TODAY IT HAD A VERY ROUGH START, RPMS WENT ABOVE 2000 AND BACK DOWN TO ABOUT 400, CONSTANTLY, AND CAR WAS SHAKING A LOT. I BACKED OUT OF THE GARAGE AND WHILE I APPLIED THE BRAKES, IT ALMOST DIED. I BARELY GOT IT IN PARK BEFORE IT DID DIE. THE WHOLE TIME THE CHECK ENGINE AND ETC LIGHTS STAYED ON. THIS IS A FIRST FOR BOTH TO STAY ON. ETC HAS CAME ON BEFORE AND STAYED, THEN NEVER SHOWED UP FOR ANOTHER 1-2 YEARS (NOW0. CAR HAS ALMOST 87,000 MILES.