Can u tell me were the crank sensor os on my 2004 kia optima with a 4 cylinder is located

no scan tool errors told DTC.wow. or just guessing"?
well if you shop at the Kia site. Oem parts seller
and tell time your VIN, (not told) then you see all transmission parts. and how many speed sensor are there , 1 to 3 possible. for most transmission.
or buy the shop manual on your unstated transmission
no VIN
2.4 or 2.7L engine,USA?
i think the tranny is Hyundai.
wow dealer sells no transmission parts.!
the schematic shows 2 pulse generators inside the box
gen A and Gen B,

Normally all speed sensors are located on the transmission near output shaft.

This car have a Crankshaft and camshaft sensor the crankshaft sensor is loceted in near the pulley crankshaft and the camshaft sensor is located in the camshaft cover behind the radiator. good loock

The ignition failure sensor (this is the module you want) has 4 wires and is located near the back of the engine close to the coils

Sorry I do not have a pic but the information I just read says that on either engine that car could have came with the Crankshaft Sensor is located on the transmission case next to the flywheel. I hope this is at least a little helpful.

1 all of you are stupid, and why would a crank sensor be located in the tank?!!!!
2 problem is the ignition failure sensor. had the same thing

Usually mounted on the lower part of the cylinder head, most likely close under the intake manifold....Check the connection before changing the unit....Regards Johngee

A crank-no start condition can definitely be caused by a faulty crank sensor; if after testing the crank sensor and finding it defective you will need to clear the codes and drive for at least a couple of drive cycles to see if the emission codes are legitimate or were simply induced by the failure of the crank sensor.

it would be the cam sensor

do you still need help? let me know