Timing belts can break prematurely and cause serious engine damage. When replacing a broken timing belt, the crankshaft position sensor should also be replaced as it most likely has suffered damage as well.Google+
Car Problem Reports
Kia Optima Crankshaft Position Sensor May be Damaged if Timing Belt Breaks
Kia Optima Problem
Engines Affected: 2.4L 4 Cylinder, 2.7L V6
Average Mileage: 110,493 mi (53,000 mi - 186,952 mi)
it just shut off while driving and acts like it wants to crank but won't and i have had the timing belt replaced and got heads fixed on the motor. i replaced the fuel pump and spark plugs
Visitor, 2003 Kia Optima, 2.7L V6, 145,000 mi
This was recalled on the '01 and '02 Kia optimas. Mine is an '03. Just my luck. Also now the driver's sdie door won't open. This car is like freaking Christine.
Visitor, 2003 Kia Optima, 2.4L 4 Cylinder, 120,000 mi
replaced cylinder head and pistons belt waterpump C. P. S. timimg belt and balancer belt trys to start but fail ...
Visitor, 2003 Kia Optima, 2.4L 4 Cylinder, 53,000 mi
new timing belt at 50,000 miles
Visitor, 2003 Kia Optima, 2.4L 4 Cylinder, 60,999 mi
My driver door is stuck as well and its a 03