09 motor swap

[Nick weir]

Recently rolled my 2009 . After getting better ,I got my motor going and made sure it was ok . I found a 2010 with a bad motor.
And put my 09 motor in .
It fired right up but has random misfires
I change the plugs and coils check injectors
Still miss fire
Some times it’s all , rest with my scanner then it may only be missing on 2 holes

I’m wondering if any one else ever swapped and that problem.or could shed some light on my problem

Thanks a lot

 

[Nick weir]

Recently rolled my 2009 . After getting better ,I got my motor going and made sure it was ok . I found a 2010 with a bad motor.
And put my 09 motor in .
It fired right up but has random misfires
I change the plugs and coils check injectors
Still miss fire
Some times it’s all , rest with my scanner then it may only be missing on 2 holes

I’m wondering if any one else ever swapped and that problem.or could shed some light on my problem

Thanks a lot

Sedan 4.6

 

[Charlie1982]

Are you using the wiring harness that was in the 2010? Did you use any of the old sensors that were in/on the 2009 motor? Not sure if that would make any difference or not, and someone else here will probably know more than I would...

 

[Nick weir]

Are you using the wiring harness that was in the 2010? Did you use any of the old sensors that were in/on the 2009 motor? Not sure if that would make any difference or not, and someone else here will probably know more than I would...

I did use the harness out of the 09 and transmission just dropped it all in as one . I tried my ecm in the car but won’t even start it

 

[Charlie1982]

I did use the harness out of the 09 and transmission just dropped it all in as one . I tried my ecm in the car but won’t even start it

I don’t know if anything changed between 2009 & 2010, but I would say there’s at least a small chance that one or more of the electrical/electronic sensors or other components that you swapped in along with the older motor might not be “talking” with the rest of the car. Just a guess, though.