So bout 3 weeks ago I was running my truck kinda hard whenever the check engine light popped on and tach was on 0 but truck was still running! Well after drivin 4 bout 5 miles the tach started workin again! Well next day I stoped at the auto store and they ran the codes! P0336 if I remember rite! They reset it and been fine! Last nite I headed out drivin easy and tach went 0 and check engine light came on! Drove it back home and cut it off! Now it won't start! I changed the sensor 2 years ago? Could it b bad already, or have I bumped the wires puttin in a new starter! Also I 4got where the sensor is! Let me know whatcha think! Thanks

 

Could be a loose connection,I think it is behind the balancer idk.I would think that you have to do a crankcase learn after you do it ( replace it).Someone will chime in here of were it is.

 

Its in the rear of the block, back by the starter. you have to remove the starter to replace it. Very simple 20 min job

 

yeah its behind the starter...and mine does this from time to time too...and it has a new sensor in it...and yes it should be 20 min job unless the oring is rusted to the block from 10 years on rust belt driving ask me how i know this...

 

well the connection was good, so i took off went an bought a new! 70 bucks from advance auto! put it in and fired rite up and check engine light went off! hopefully it fixes it 4 along time ! thanks 4 the help yall