2015 Kia Optima
Problems, recalls and owner-reported issues
Engine is the leading concern among 1,008 owner complaints filed for this model year. This is the 2nd highest complaint count among 20 Optima model years with reports.
Of the 2015 reports, 31 involved a crash and 74 involved a fire. 23 people were injured and 1 person died.
What owners report most often
Recalls and investigations
Service brakes, hydraulic, antilock/traction control/electronic limited slip, control unit/modulePark outsideSep 25, 2023
Kia America, Inc. (Kia) is recalling certain 2010-2019 Borrego, 2014-2016 Cadenza, 2010-2013 Forte, Forte Koup, Sportage, 2015-2018 K900, 2011-2015 Optima, 2011-2013 Optima Hybrid, Soul, 2012-2017 Rio, 2011-2014 Sorento, and 2010-2011 Rondo vehicles. The Hydraulic Electronic Control Unit (HECU) may experience an electrical short, which can result in an engine compartment fire while parked or driving.
An engine compartment fire while parked or driving can increase the risk of injury.
Owners are advised to park outside and away from structures until the recall repair is complete. Dealers will replace the HECU fuse, free of charge. Interim notification letters, notifying owners of the safety risk, were mailed November 14, 2023. Owner notification letters were mailed March 29, 2024 through June 18, 2024. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC284.
Campaign 23V652000 on NHTSA.gov
Service brakes, hydraulic, antilock/traction control/electronic limited slip, control unit/modulePark outsideMay 10, 2021
Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles previously recalled under recall 20V-519. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
An electrical short in the HECU increases the risk of a fire while parked or driving.
Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. Dealers will install a new multi-fuse, and inspect the HECU for leaks, replacing the HECU if necessary, free of charge. Owner notification letters were mailed on July 2, 2021. This recall supersedes previous NHTSA recall number 20V-519. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC212.
Campaign 21V331000 on NHTSA.gov
Service brakes, hydraulic, antilock/traction control/electronic limited slip, control unit/modulePark outsideAug 27, 2020
Kia Motors America (Kia) is recalling certain 2013-2015 Optima and 2014-2015 Sorento vehicles. Brake fluid may leak inside the Hydraulic Electronic Control Unit (HECU), possibly resulting in an electrical short.
If the HECU short circuits, there is an increased risk of an engine compartment fire.
Kia will notify owners, and dealers will inspect the HECU for leaking brake fluid and replace the HECU if necessary, free of charge. Owners are advised to park outside and away from other vehicles and structures until the recall repair is completed. The recall began October 20, 2020. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC197.
Campaign 20V519000 on NHTSA.gov
Fuel system, gasoline, delivery, hoses, lines/piping, and fittingsDec 19, 2018
Kia Motors America (Kia) is recalling certain 2011-2017 Optima, 2012-2017 Sorento and 2011-2018 Sportage vehicles that previously received an engine replacement under recall number 17V-224, warranty, or the Knock Sensor Detection System (KSDS) Product Improvement Campaign. The high pressure fuel pipe that connects to the fuel pump outlet may have been damaged, misaligned or improperly torqued during the engine replacement procedure, possibly causing a fuel leak.
A fuel leak in the presence of an ignition source can increase the risk of a fire.
Kia has notified owners, and dealers will inspect and replace the fuel pipe, as necessary, free of charge. The recall began January 17, 2019. Owners may contact Kia customer service at 1-800-333-4542. Kia's number for this recall is SC172.
Campaign 18V907000 on NHTSA.gov
Representative owner complaints: engine
647 reports, newest first. Show all
Steering, Electrical system, Engine, Aug 29, 2020
8/27/2020 CAR HAD BEEN AT THE KIA DEALERSHIP 2 WEEKS BEFORE FOR THE SAME ISSUE...CAR SHUT DOWN ON THE FREEWAY AFTER 'CHECK HYBRID CHARGING SYSTEM' LIGHTS FLASHING 'SHUT DOWN ENGINE' LIGHTS FLASHING. KIA HAD DETERMINED CAR JUST NEEDED A 'HYBRID BATTERY UPDATE' FAST FORWARD...I WAS DRIVING TO VISIT MY MOTHER IN IDAHO, DRIVING ABOUT 75 MPH ON THE FREEWAY, WHEN THE SAME THING HAPPENED: 'CHECK HYBRID CHARGING SYSTEM, SHUT OFF ENGINE.' ALL THE LIGHTS STARTED FLASHING, AND 'POSSIBLE BATTERY MANAGEMENT SYSTEM ISSUE' DIAGNOSTIC FLASHED ON THE RADIO SCREEN. THE CAR STARTED LOSING POWER BEFORE LOCKING UP COMPLETELY, WHEEL LOCKING, SHUTTING OFF AND SPINNING OUT ON THE HIGHWAY. LUCKILY ANOTHER OTHER CARS WERE CLOSE BY OR ELSE THIS WOULD HAVE EASILY TURNED INTO A FATAL CRASH. 3 HOURS ON THE SIDE OF THE ROAD AND A $450 TOW INTO THE NEAREST KIA DEALERSHIP WHICH WAS 2 HOURS AWAY.. AND I FIND OUT IT'S A BLOWN HEV FUSE AND THE HYBRID SYSTEM/BATTERY HAS FAILED COMPLETELY. NOW I'M STUCK WITH A DEAD CAR. FAILED AT AROUND 79,500 MILES. THIS IS NOT THE FIRST KIA OPTIMA HYBRID TO DO THIS!!! RECALL THESE CARS BEFORE THEY KILL SOMEBODY!! I SHOULD NOT HAVE TO WORRY ABOUT A 5 YEAR OLD CAR SHUTTING DOWN AND LOCKING UP ON THE FREEWAY WHILE DRIVING. ESPECIALLY WITH KIDS IN THE CAR. I WILL NEVER BUY ANOTHER KIA AGAIN. IT HAS THE 10 YEAR 100,000 MILE WARRANTY WHICH KIA IS SAYING COVERS NO PART OF ANY REPAIRS. ODD SINCE THIS IS A KNOWN ISSUE WITH THESE HYBRIDS!! RECALL THESE DEATH TRAPS!!!
Engine, Aug 26, 2020
PROBLEMS WITH ACCELERATION. PUT ON LIMP HOME MODE. I TOOK IT TO DEALERSHIP AND IT TURN OUT THE KNOCK SENSORS AREN'T WORKING AND I NEED TO REPLACE ENGINE.
Engine, Aug 20, 2020
THE ENGINE STARTED TO KNOCKING WHILE I WAS DRIVING ON A CITY STREET AND CAN'T PICK UP SPEED OVER 60 MPH AND KNOW THE ENGINE LIGHT IS ON
Engine, Aug 17, 2020
I WAS DRIVING HOME FROM WORK AND MY CAR STALLED ON ME OUT OF NO WHERE. I WAS ABLE TO GET STARTED. ALL MY LIGHTS ON MY DASH BOARD CAME ON AND MY CAR WAS MAKING A BAD RATTLING NOISE. I WAS ABLE TO DRIVE IT HOME, STILL STALLING FROM TIME TO TIME. I GOT IT TOWED TO A MECHANIC SHOP. HE SAID IT SOUNDS LIKE A BAD ENGINE AND IT SOUNDS LIKE IT COULD BLOW. I'VE HAD MY CAR FOR 2 YEARS AND HAVE NEVER HAD A PROBLEM WITH IT. IT NEVER MADE A NOISES BEFORE OR ANYTHING TO INDICATE MY ENGINE WAS GOING OUT. I GOT MY PILES CHANGED ON 8/11/2020 AROUND 2:30PM AT MURPHYSBORO, IL WALMART. THIS INCIDENT HAPPENED ON 8/13/2020.
Engine, Aug 16, 2020
I WAS DRIVING DOWN THE STREET AND MY CAR STARTED JERKING, SHAKING AND MAKING NOISES. IT WAS UNSAFE TO DRIVE HOME, SO I PULLED OVER AND HAD THE VEHICLE TOWED HOME.
Engine, Aug 10, 2020
WHILE DRIVING DOWN THE ROAD AND COMING TO A STOP LIGHT I WENT TO TAKE OFF AND LOST ALL POWER. I BROUGHT MY VEHICLE INTO THE SERVICE FACILITY WHERE I BOUGHT IT FROM AND I WAS JUST TOLD I NEED A NEW ENGINE. I HAVE A 2015 KIA OPTIMA LX WITH 64,000 MILES.
Engine, Aug 4, 2020
AS I WAS TRAVELING ON THE HIGHWAY, I PULLED UP TO A RED LIGHT, WHEN THE LIGHT CHANGED MY VEHICLE WOULD NOT ACCELERATE AND I THERE WAS AN 18 WHEELER COMING UP BEHIND ME WITH MY 80-YEAR-OLD GRANDMOTHER IN THE CAR. THANK GOD I WAS ABLE TO GET OUT OF THE WAY IN TIME. I JUST BOUGHT THIS CAR WITH LOW MILES AND I HAVE OIL IN IT AND OUT OF NOWHERE THERE'S IT'S LOUD TICKING NOISE COMING FROM THE ENGINE AND SOMEHOW MY OIL IS BACK LOW AGAIN. THIS SO TOTALLY ON KIA SO MANY COMPLAINTS NOT ENOUGH RESOLUTION.
Engine, Jul 30, 2020
THE CHECK ENGINE LIGHT IS ON AND THE VEHICLE LACKS ACCELERATION. A LOUD TAPPING IS COMING FROM THE ENGINE. THIA STARTED ON JULY 25, 2020 WHILE DRIVING ON THE HIGHWAY.
Structure, Engine, Fuel/propulsion system, Jul 29, 2020, crash, fire
I WAS DRIVING ON THE FREEWAY AND ALL OF A SUDDEN THE CHECK ENGINE AND ALL LIGHTS CAME ON. I COULD NOT ACCELERATE OR STOP THE VEHICLE THE BRAKES DID NOT WORK I COASTED OFF TO THE SIDE OF THE FREEWAY AND HIT THE GUARD RAIL BECAUSE I HAD NO BREAKS. THEN I HAD A TOW TRUCK COME AND PULL ME OFF THE FREEWAY TO SEE IF I COULD START MY VEHICLE HOWEVER IT DID NOT START ALL THE LIGHTS WERE ON THE DASH ON AND THE CAR WAS SMOKING AND SMELL LIKE FIRE I HAD THE CAR TOWED TO THE MECHANIC TO FIND OUT WHAT IS WRONG. THE MECHANIC SAID THE ENGINE IS FRIED BECAUSE THE OIL PUMP WAS NOT BEING PUMPED INTO THE MOTOR THEREFORE IT LOCKED UP HE SAID I BELIEVE THERE IS A RECALL ON THIS VEHICLE FOR THE SAME REASON I CHECKED THE RECALL AND THERE IS NOTHING IN THE SYSTEM THAT A 2015 KIA OPTIMA IS UP FOR RECALL. I BELIEVE KIA NEEDS TO REFUND THIS VEHICLE THAT HAS ONLY 88,000 MILES IN THE ENGINE NEEDS TO BE REPLACED KIA NEEDS TO CALL ME
Power train, Engine, Jul 26, 2020
I WAS DRIVING ON INTERSTATE 40 IN TENNESSEE AND MY CAR JUST STOPPED RUNNING. I WAS IN RIGHT LANE AND I PULLED OFF TO SHOULDER. A DOT EMERGENCY REPAIR TRUCK STOPPED AND TRIED TO JUMP MY CAR, BUT NOTHING HAPPENED, NOT EVEN A NOISE OR ANYTHING. CALLED AAA FOR A TOW.
Suspension, Other or unspecified, Engine, Jul 24, 2020
I WAS DRIVING AND OUT OF NOWHERE THE CAR STARTED TO BOG DOWN AND THE CHECK ENGINE LIGHT CAME ON. IT CONTINUED TO DO IT EVERY FEW SECONDS AND WAS GETTING WORSE THE WHOLE WAY TO THE SHOP, WHICH WAS THE CLOSEST ONE I COULD FIND AS SOON AS IT STARTED DOING IT. THE SHOP RAN THE ERROR CODE AND GOT A KNOCK SENSOR ERROR. I HAD KIA COME PICK IT UP AND TAKE IT TO THE SHOP. THE SHOP PERFORMED A BEARING CLEARANCE CHECK AND THE VEHICLE DID NOT PASS SO THEY REPLACED THE ENGINE AND INTAKE MANIFOLD DUE TO "CATASTROPHIC FAILURE". WHILE REPLACING THE ENGINE THEY FOUND THE TURBO HAD PLAY AND SO THEY INSTALLED A NEW TURBO ASSEMBLY. AFTER ENGINE REPLACEMENT THEY FOUND THE STARTER SEIZED, THEY REPLACED THE STARTER. AFTER ENGINE REPLACEMENT THEY PERFORMED THE ECU UPDATE AND RESET ADAPTIVE VALUES, THEN PERFORMED WIRING SIGNAL INTERFERENCE CHECK WHICH STARTED OK. IMMEDIATELY AFTER GETTING THE VEHICLE BACK FROM THE SHOP I NOTICED A LOUD NOISE COMING FROM FRONT DRIVER WHEEL AREA. SHOP ENDED UP REPLACING CALIPER AND WHEEL BEARINGS ALONG WITH NEEDING AN ALIGNMENT. ALL HAPPENED AROUND 58K MILES. LUCKILY STILL UNDER WARRANTY. SHOP SAID IT WAS JUST A BAD ENGINE. NOTHING I COULD OF DONE COULD OF CAUSED IT.
Electrical system, Engine, Jul 16, 2020
I PURCHASED A NEW 2015 KIA OPTIMA. COMPLETED REGULAR MAINTANENCE ON IT, AND THE ENGINE FAILED (LOCKED UP) AT 138,000 MILES. LATER, I WAS ADVISED THE 2015 KIA OPTIMA AND OTHER KIA'S WERE FOUND TO HAVE FAULTY ENGINES. KIA DID NOT OFFER ASSISTANCE AT THE TIME, BUT ARE NOW OFFERING ASSISTANCE SINCE I HAVE TRADED THE KIA WITH A LOCKED MOTOR. I HAVE BEEN GIVEN THE RUN-AROUND FOR WEEKS AND TODAY A "REGIONAL MANGER" CALLED AND OFFERED ZERO ASSISTANCE AND BASICALLY TOLD ME THE FAULTY MOTOR WAS NOT THEIR PROBLEM. WHEN THE MOTOR LOCKED UP, I WAS PASSING A CAR ON THE HIGHWAY. THE OPTIMA STALLED WHILE I WAS IN ON-COMING TRAFFIC, AND THEN THE MOTOR DIED. I WAS ABLE TO PULL OVER SAFETLY, AND THE CAR SMELT LIKE AN ELECTRICAL FIRE, IT NEVER STARTED AGAIN.
Electrical system, Service brakes, Engine, Jul 16, 2020
THE BRAKE LIGHTS WOULD NOT GO OFF WHEN I TURNED MY CAR OFF. THIS ENDED UP KILLING MY BATTERY. WHEN I GOT THE BATTERY RECHARGED IT ALLOWED THE CAR TO START WITHOUT THE BRAKES BEING PUSHED IN. ALSO I NOTICED THAT THE STOPPER HAD BROKEN. THIS ALLOWED THE COMPUTER TO THINK THAT THE BRAKES WERE ENGAGED EVEN THOUGH THE PEDDLE WASN'T PUSHED.
Engine, Fuel/propulsion system, Jun 25, 2020, fire
TL* THE CONTACT OWNED A 2015 KIA OPTIMA. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY OVER 40 MPH, THE VEHICLE SUDDENLY STALLED, THERE WERE NO WARNING LIGHTS. THE CONTACT HAD THE VEHICLE TOWED TO THE DEALER LANGDALE KIA (1508 N ASHLEY ST, VALDOSTA, GA 31602; (229) 242-0715) WHO DIAGNOSED THAT THE ENGINE FAILED AND NEEDED TO BE REPLACED. THE VEHICLE'S ENGINE WAS REPLACED UNDER WARRANTY AND THE FUEL PUMP WAS REPLACED UNDER THE RECALL NHTSA CAMPAIGN NUMBER: 18V907000 (FUEL SYSTEM, GASOLINE, ENGINE). THE CONTACT STATED APPROXIMATELY 10 DAYS LATER THE VEHICLE SUDDENLY CAUGHT STARTED TO SMOKE FROM UNDERNEATH THE HOOD OF THE VEHICLE. THE CONTACT STATED THAT APPROXIMATELY 5-8 MINUTES LATER THE SMOKE DRASTICALLY INCREASED, THEN, THE VEHICLE CAUGHT ON FIRE. THE FIRE DEPARTMENT EXTINGUISHED THE FIRE AND A FIRE DEPARTMENT REPORT WAS MADE. THE VEHICLE WAS TOWED AND DEEMED TOTALED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 117,284. *LN*JB
Vehicle speed control, Engine, Fuel/propulsion system, Jun 24, 2020
THE CAR SPED IS FASTER THAN WHAT THE SPEEDOMETER DAY. THE CAR JERKS WHEN YOU ARE SITTING IDLE. THE OIL LIGHT KEEP COMING ON WHEN THE OIL STICK SHOW THAT'S ITS OIL IN THERE. CAR DON'T PICK UP SPEED FAST ENOUGH CHECK ENGINE LIGHT CAME ON. *TR
Engine, Jun 22, 2020, fire
WHILE DRIVING DOWN THE HIGHWAY WAS TRAVELING AROUND 65 MPH ON DRY STREET IN THE FAR LEFT LANE (FAST LANE), MY CAR STARTED MAKING A SOUND LIKE METAL CLICKING AND THEN CAR STARTED SMOKING. MY HUSBAND GETS OVER TO THE SIDE OF ROAD AND THE SMOKE GOES FROM GRAY TO BLACK AND WHEN HE LIFTED THE HOOD UP FLAMES COMING FROM REAR AND PASSENGER SIDE OF ENGINE! LUCKILY SOMEONE PULLED OVER AND HAD FIRE EXTINGUISHER TO PUT OUT FIRE. FIRE AND POLICE BOTH ARRIVED ON SCENE AND REPORTS MADE. VEHICLE TOWED HOME; WAITING TO TOW TO DEALER TO FIND OUT CAUSE OF FIRE. REGULAR MAINTENANCE AND UPKEEP ON THE VEHICLE AND NO LIGHTS OR WARNINGS JUST FIRE. KIA KNOWS THERE IS MAJOR PROBLEMS WITH THESE ENGINES AND CHOOSE TO ONLY RECALL CERTAIN YEARS WHEN THEY BASICALLY KNOW ANY VEHICLE BETWEEN 2011 AND 2018 CAN BE AFFECTED. DON'T KNOW WHAT THE OUTCOME WILL BE BUT VERY UPSET THAT VEHICLE CAUGHT ON FIRE AND KIA STATES SINCE IT'S OVER 100,000 MILES THERE'S NOTHING THEY CAN DO. *TR
Engine, Jun 17, 2020
MY CAR ENGINE LIGHT CAME ON. I TOOK CARE TO DEALERSHIP. DEALERSHIP KEPT CAR FOR 2 1/2 WEEKS AND ULTIMATELY WILL NOT PAY FOR REPAIRS. NO RECALL REPAIRS HAVE EVER BEEN DONE ON MY CAR SINCE I HAVE HAD IT AND I WAS NOT NOTIFIED OF ANY RECALLS. RECALL IS FOR HIGH PRESSURE FUEL LINE AND THE DOCUMENTATION STATES IT NEEDS TO BE REPLACED IN MY CAR. *TR
Fuel system, Gasoline, Engine, Jun 11, 2020
TL* THE CONTACT OWNS A 2015 KIA OPTIMA. THE CONTACT STATED THAT WHILE DRIVING AT 60 MPH, THE VEHICLE STALLED WITH THE CHECK ENGINE WARNING LIGHT ILLUMINATED. THE CONTACT PULLED OVER AND THE VEHICLE WAS TOWED TO MIKE MURPHY KIA (6150 ALTAMA AVE, BRUNSWICK, GA 31525) WHERE THE VEHICLE WAS DIAGNOSED WITH ENGINE FAILURE. THE DEALER CONTACTED THE MANUFACTURER FOR APPROVAL TO HAVE THE ENGINE REPLACED UNDER NHTSA CAMPAIGN NUMBER: 18V907000 (FUEL SYSTEM, GASOLINE, ENGINE). THE MANUFACTURER NOTIFIED THE CONTACT THAT THE ENGINE REPLACEMENT FAILED AND THAT ANOTHER ENGINE NEEDED TO BE ORDERED TO REPLACE THE DEFECTIVE ENGINE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 130,000.
Engine, Jun 8, 2020
WE PURCHASED THIS CAR BRAND NEW AND WE HAVE HAD TO REPLACE THE ENGINE AND STARTER TWICE DUE TO OIL LEAKING THROUGH EXHAUST. NO OIL LEAKS ON GROUND WERE VISIBLE. NO LIGHTS WARNING LOW OIL. BOTH TIME CAR BROKE DOWN ON ROAD. ABOUT TWO YEARS APART. WE REPLACED PARTS WITH USED MOTORS AS THAT'S WHAT WE COULD AFFORD. *TR
Engine, Fuel/propulsion system, Jun 6, 2020
ENGINE LIGHT JUST STARTED FLASHING AND NO ACCELERATION WHATSOEVER. TAKES FOREVER JUST TO GET UP TO 30 MPH. CALLED KIA AND WAS TOLD THEY DON'T KNOW IF THERE'S A RECALL OR NOT ON THAT YEAR. NOT HELPFUL AT ALL. I'M AFRAID FOR MY DAUGHTER TO EVEN DRIVE IT NOW AND IT'S HER ONLY FORM OF TRANSPORTATION TO WORK. *TR
Structure, Engine, Jun 3, 2020, fire
ENGINE CAUGHT FIRE! HAD PICKED THE KIA OPTIMA UP THE DAY BEFORE FROM THE DEALERSHIP, WHERE THEY HAD INSTALLED A NEW ENGINE, BELTS, AND HOSES. HAD DRIVEN 40 MINUTES FOR A DOCTOR APPT. GOT OFF THE FREEWAY. AS I WAS APPROACHING THE LIGHT (ABOUT 3 BLOCKS FROM FREEWAY), NOTICED GRAY SMOKE COMING FROM UNDER HOOD ON PASSENGER SIDE. WITH A BROKEN LEFT ARM, HAD TO GET OUT AND ACROSS TRAFFIC. SAW THE FLAMES AS I WAS CROSSING THE STREET. IN UNDER A MINUTE, THE FRONT OF CAR WAS ENGULFED IN FLAMES. *TR
Engine, Jun 3, 2020
WHILE DRIVING ON THE EXPRESSWAY, THE CAR MADE A NOISE AND THE GAS WOULDN'T GIVE THE CAR POWER. I PULLED OVER TO THE SIDE AND WHILE DOING SO THE CAR SHUT OFF. AFTER HAVING IT TOWED TO THE MECHANIC THEY SAID IT IS A SEIZED ENGINE. THIS IS THE SECOND KIA THAT THIS HAS HAPPENED TO!! *TR
Engine, May 29, 2020
MY 2015 KIA OPTIMA SXL TURBO IS MAKING A KNOCKING SOUND WHEN I HIT THE GAS. IT ALSO STALLED ON ME WHILE AT A STOP LIGHT. SOLENOID ALSO HAD TRACES OF METAL SHAVINGS. *TR
Engine, May 27, 2020
I HAVE A 2015 KIA OPTIMA. THE ENGINE HAS A DELAYED ACCELERATION WHEN TAKING OFF. MAKES A STRANGE NOISE WHEN TURNING. SMELLS LIKE IT IS BURNING OIL AFTER DRIVING A SHORT PERIOD OF TIME AND THERE IS AN EXCESSIVE NEED TO REPLENISH THE ENGINE OIL. OIL IS EXTREMELY DARK. SOMETIMES THERE IS WHITE SMOKE COMING FROM THE EXHAUST. HARD TO ACCELERATE ON THE FREEWAY AT TIMES. *TR
Engine, May 27, 2020
MY 2015 KIA OPTIMA SXL TURBO IS MAKING A KNOCKING SOUND WHEN I HIT THE GAS. IT ALSO STALLED ON ME WHILE AT A STOP LIGHT. *TR