i just bought an 89 firebird with a 305 tbi motor. the car turns over but i cant get it to fire. i unscrewd the fuel lines and established that it is getting fuel. i then checked for spark and i am not getting any spark. so as i start looking at the distrubuter i noticed a sensor the wasnt connected and ive tried to track where it goes and i just cant find it. the sensor is in the back by the distributor it has what looks like one black and one orange wire conected to it. do any of you know whats its for and if it could be my problem? let me know if a picture would help. thanks