Help with Timing

[tbauer03]

Ok i just got my truck pieced back together and i unplugged the tan wire and set the timing to zero. The truck ran fine there but the dash had a check engine light. since it seemed to be running ok i reset the ecm by pulling the fuse and putting it back in. I then connected the tan wire and started the motor and it takes the timing way back off the timing and is probably running around 30 degrees before top dead center and there will be a repetitive popping coming out of the tailpipe however there is no check engine codes. I disconnected the the tan wire and ran it at TDC it appears to run fine but gives a code. Can anyone shed some light on this. Could i have messed something up. I had the motor apart to replace all the rocker arm studs but i don't think that has anything to do with the problem.
Thanks in advance

 

[jwaller]

when you unplug the tan wire it will set a esc code. then when you connect it back you will see the timimg mark move thats normal. I think you might have a plug wire crossed, check them first.

 

[tbauer03]

Props to Waller he saved the day
I had swapped 3 and 5