What causes a crankshaft to crack? I got an oil change and a new air filter, and later that day my car wouldn't start and I was told that my crankshaft was cracked.

Have you put an OBD on it to check the error codes?

try checking your crankshaft or tps throttle position sensor it could cause you to lose power at times

change the crankshaft postion sensor and the mass airflow sensor and the Idle AIr Temperature sensor to make sure im most likely sure ist the crankshaft sensor also make sure that you have a clean air filter not enought clean air could cause the car to stall also inspect your injectors make sure that they arent cracked or leaking i would put some fuel injector cleaner just to be sure

Not fuel filter. Is your engine light on? Could be accelerator pedal position sensor. Does it do it only when you are accelerating?

Take it from the resident expert at my hazardous zone for reliable answers: CPS

could be crankshaft sensor or camshaft sensor. see if you can pull the code from the ECM, should still be in the computer's memory.

first remove the plugs and try to turn the engine by hand(slowly), if the engine locks stop, remove valve covers and check each valve keeper, i think you may have dropped one , if not a nut or washer may have found its way into the piston chamber

hi did you get a solution for this? the same thing happened to me too.I had my oil change yesterday and today I saw the engine oil pressure lights come off and the oil started leaking very bad and the mechanic told me that the oil filter housing cracked.

try changing the fuel filter. with that many miles on it could be clogged. most people forget all about the fuel filter which is typically on the passenger side on the frame rail near the tire well.

THE STARTER IS GOING BAD