question on cam/crank sensor

was wondering what the man purpose of the cam/crank sensor controls. does it control spark and fuel devilery?

It detects tdc. I know it controls spark, Idk about fuel.

it controls spark timing and injector timing (a simplified explination, but it should do).
they do a few other things, also.

I own a 1995 Galant 2.4  manufactured 7/94. I was told that my crank sensor had failed due to a no spark condition. I purchased the Crank Position Sensor and labored removing the PS, AC, and Alt belts and their mounts. Once I managed to get the Crank Pulley Off, the space where the C.P.S is supposed to be isn't there. Not even the bolts. I refered to Chilton's(waste of money book) to see where the CPS was located and it told me that it was where it was supposed to be. I have no idea where it is. I called Mitsu Motors and they tell me the same that Chiltons does. I have the book and the picture sows where it is but I dont see it. It is supposed to be located behind the crank wheel and needs to be bolted off....A little help please

did you remove the timing cover?  its behind the timing belt.

I did and I did not see the C.P.S. I removed the timing cover and belt . I removed the crank pulley and did not see it where it is supposed to be....could it be elsewhere. Vehicle was manuf. on 7-1994 4g64

actually, now that you mention it, Im not sure that year galant has an idividual crank sensor.   

I was told by the auto parts store that it had one. If it doesn't have a crank sensor, what would i need to check to find out why I dont have a spark? I thought all 4g64 had crank sensors? Is there a web site I can visit that you know where i can check up on it using my vin and year of assembly

no, up until 94 or 95 most only had a distributor (which included the crank sensor.  it was known as the "top dead center" sensor at the time.), which is the most common failure on that year galant.

ok i put on a hall effect cas on  yesterday. when i went to take if for a test drive i pulled out on to the road and the had no power, it was boosting fast but was not going anywhere. now when i had the optical cas the car ran great no problems at all.