2009 Kia Optima power train problems

“WHILE DRIVING THE CAR WHEN COLD THE CAR DOWNSHIFTS HARD INTO FIRST AT ABOUT 20 MPH. ALMOST AT SOMETIMES FEELING LIKE I HAVE BEEN HIT FROM THE BACK. MY NECK HAS STARTED HURTING FROM WHIPLASH. THIS IS A VERY HORRIBLE PROBLEM THAT NEEDS TO BE FIXED. IN STATES WHERE ROADS BECOME WET, ICY, AND COVERED WITH SNOW, THIS CAN CAUSE A LOT OF DAMAGE/ POSSIBLY DEATH.”

“TRANSMISSION DOWNSHIFT VERY HARD FROM 2ND TO 1ST. DEALER RESET MODULE 10 MONTHS AGO. SOLVED PROBLEM. PROBLEM RECURRED. DEALER RESET MODULE BUT PROBLEM CONTINUES. CHECKED INTERNET, PROBLEM SEEMS TO BE WIDESPREAD.”

“WHEN CAR IS SLOWING DOWN AND /OR APPROACHING A STOP SIGN IT GIVES A HARD JERK. EVEN IF TRAFFIC SLOWS DOWN ON THE EXPRESS WAY IT GIVES A HARD JERK. THIS HAS BEEN GOING ON SINCE NOVEMBER 2020.”

“DRIVING AT 70 MPH, ENGINE DIED AND CAR STARTED SMOKING. PULLED TO SHOULDER, FRONT END OF CAR CAUGHT FIRE. FIRE DEPARTMENT EXTINGUISHED WITH FOAM. CAR A TOTAL LOSS.”

“CAR LURCHES AT 20 MPH WHEN SLOWING DOWN TO A STOP. THIS HAPPENS AFTER JUST STARTING THE CAR, ONCE DRIVEN ON THE HIGHWAY IT DOWNSHIFTS WITHOUT LURCHING FORWARD. THIS HAPPENED YEARS AGO AROUND 70,000 DEALER FLUSHED TRANSMISSION AND IT WAS OK UNTIL NOW AT 120,000. SEEMS LIKE THIS IS A COMMON REOCCURRING PROBLEM THAT SHOULD BE RECALLED.”

“MY 2009 KIA OPTIMA WITH 90,000 MILES IS EXPERIENCING A HARD DOWNSHIFT INTO FIRST GEAR WHEN IT DECELERATES TO ABOUT 20 MPH. IT IS SO ABRUPT, IT FEELS AS IF THE BRAKES HAVE BEEN APPLIED VERY RAPIDLY. THE CAR JERKS FORWARD AND IS ACCOMPANIED BY A CLUNKING SOUND FROM THE TRANSMISSION. IT MOSTLY HAPPENS WHEN THE VEHICLE IS COLD AND GOES AWAY AFTER IT HAS WARMED UP. IT JUST STARTED AND I HAVE NOT TAKEN IT TO BE SERVICED.”