Okay guys I have a 07 h3 3.7 the timing Chain went and I decided to replace engine Now it’s all installed it will not start display on Dash says low power mode the thing is it cranks fine and fires but will not run
it’s giving me a throttle position code so I replace throttle body with position sensor no better then gas pedal sensor same no better replaced ignition switch today still nothing Could it be a computer issue I have replaced all sensors too

 

was the engine from an 07? cam position changes from older to newer. some hve one some have 2 sensors.

 

It’s a o7 motor and both cam sensors are new

 

did they do a crank relearn yet?

 

No I was told it has to run to relearn is that True?

 

yes it is true.
make sure all the bulk head connectors are seated properly especially the fuse box. check for bent pins snd corrosion. and make sure you have not missed any ground points. the harness are old and brittle maybe moving them something got pinched or pulled. especially the wiring going down to the transmission.

 

I’ll be checking all that thank you