Recently my 04 g35 de shot a multi misfire code
I have done everything possible to try and diagnose/ fix it with no luck
(Motor was replaced at 130k)
replace spark plugs
coil packs
fuel pump/fuel pump sensor
a/f sensors
maf sensor
and valve covers aswell as the gaskets

brought it in to a shop for a ecu/ecm scan. wiring all checked out. But was told that the fuel temp is reading -45 degrees constantly (if that means anything)


What could possibly be left to fix on my G any help is appreciated!

 

Did u do any work on the car right before this happened?

 

have you tried with new injectors? Or maybe camshaft or crankshaft position sensors?

 

If it never worked properly after the swap I'd guess the shop who did the engine swap didn't line up the flywheel on the alignment dowel so the whole thing is reading wrong crank position.