Crankshaft pulley bolt or harmonic balancer failure
ENGINE AND ENGINE COOLING
47 NHTSA complaints · 2007-04 → 2021-12
“TRAVELING AT 40MPH CRANKSHAFT BOLT BROKE OFF INSIDE CRANKSHAFT SPROCKET CAUSING HARMONIC BALANCER AND BELT TO FALL OFF. ALSO HAD TO REPLACE A/C COMP, WATER PUMP AND TIMING BELT DUE TO DAMAGE. 1ST INSTANCE. *TR”
“CRANKSHAFT BOLT BROKE WITH APPROX 75,000 MILES. KIA ISSUED SERVICE BULLETIN AND REPLACED THE BOLT. BUT THE MOTOR WAS DESTROYED WHEN IT BROKE AND CONTINUOUSLY OVERHEATED AND WAS UNDRIVABLE. IT REQUIRED A NEW MOTOR”
“CRANKSHAFT PULLEY BOLT_WHILE DECELERATING TO MAKE A TURN, I LOST MY POWER STEERING AND POWER BRAKES. THE BRAKE AND BATTERY INDICATOR LIGHTS CAME ON. THANKFULLY, I WAS NOT INVOLVED IN A POTENTIALLY SERIOUS ACCIDENT”