hey guys does any body know where the crank senser is it a 1994 s10blazer

4.3l 4x4 thanks mike

TBI or CPI?

it a tbi

I don't think it has one :shrug:

If you have a distributor I think your cranksensor is integrated in there.

thank you the turck will start once it warms up it brakes up i will take the whole distributor out of my other truck and put it in there and see what happens

Your welcome, But before you decide to take either distributor out you NEED to make several location marks, If you have a VORTEC motor you will definitly have to do it step by step.
1) remove dist cap
2) make mark on cap and distributor corresponding to rotor position
3) make a mark at distributor base where it's bolted down to the intake (might want to clean the area first with brakekleen)
4) remove dist mounting bolt and wiring
5) slowly pull up on dist to remove
6) reinstall then check timing (specs should be located on hood sticker)

THANK YOU AGAIN WHEN I TOOK THE CAP OFF IT LOOK BAD AND IT WAS NEW SO I PUT THE OTHER CAP ON THE TURCK WILL STAY RUNING PUT CUT OUT AT HIGH RPMS
THE COIL IS NEW I DON'T KNOW IF THE KNOK SENSER HAS SOMETING TO DO WITH IT
OR THE FUEL PUMP I GOING TO TRY CHANING THE DIST FIRST THANKS MIKE