Crankshaft Senser?

My car has been dieing for months now. just die out of the blue or the tack and trac dies and a restart fixes it. I finally got a SES light on and got it read at auto zone. sure enough..crank senser...do you think this is causing my prob? ...although it's easy to see the senser near the H balancer. will the balancer come off easy after reomoving the bolt or will I need to use my pully puller...there is no room for a conventional puller. or will it just come off. bought the senser then read the dir. looks like I'm taking it in huh?