Crank sensor and camshaft sensor

Watch the video of the replacement job 2004 Hyundai Sonata Optima V6 2 7 crankshaft position sensor location and...

cam and crank sensors are notorious for acting up when their temperature changes; if its got the code, it's probably bad.

Have you ever replaced the timing belt?? If not the problem is likely to be a loose worn out timing belt. A floppy belt will play havoc with the sensor signals and trigger a check engine light and a camshaft sensor code.

this sensor is located in the front of the motor near the crank shaft balancer, or in the rear by the cylinder head where the transmission meets the engine.

Hi There is only 2 areas that would cause this. The ignition control module or the crank angle and camshaft sensor.
You will need to run a diagnostic check to insure that this is the problem areas.

is there spark if they did a motor rebuild did the crank positioning or the camshaft posioning sensor get damaged

should be at the right rear of engine block just ahead of the transmission

most likely a crank sensor assuming it is just cranking without starting possible fuel pump

The crank shaft sensor on that model should be on the driver side towards the back of the tranny its not hard to get to.

It is located on the front of the motor....looks like this: