New issues popped up after sitting
 

i removed the trans and removed the wiring harness to do some work, put everything back in and it started right away then died. Then a P0343 came up and now the car starts very rough and i also noticed that the RPM Is not reading on my dash and on my shift light. I removed the harness to clean some things up i nevwr tore into the engine, what could it be? I get the code but before i took the trans out it ran perfect.

Did some digging, I used a good working cam sensor and it still threw the P0343 code. From more research I learned that the crank sensor is what actually gives the signal to the tach, on my OBD reader there is RPM showing on my DashCommand app so it is logging it but it is just not coming up on my dash tach/shift light. Also things I learned, sometimes a crank shaft sensor relearn needs to be done when getting a new sensor, if i were to change it I wont know if thats it until I take it to the tuner (missing trans). This brings me to the next thing is that I do not have a trans on the motor, I only turned it on to have stabil run through it because I will need it to sit a little bit longer. The other thing, I pulled the battery off of it so it wouldnt get messed up, the battery has been off for over 7 months, could that cause some issues with the tune and such? I also read that the back of the head grounds from the harness are important, well I checked those and those are good. What else is left for me to check? I dont think the cam is walking because the car ran perfect before the trans started to go out.