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Discussion Starter #1
I just swapped in a ‘14 engine in my ‘12, I used my original trans and pcm but used everything else from the ‘14 , all sensors, engine harness and rack and pinion. All harness connections and everything else connected perfectly. When I go to start it all the dash lights go out and come back on when I release the key. Is the ‘14 engine harness not compatible on the ‘12 or am I missing something?
 

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PCM may not recognize the engine causing the issue. Try the 14 pcm

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Maybe the starter is bad sucking everything down or you have a bad ground.
 

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Discussion Starter #6
Maybe the starter is bad sucking everything down or you have a bad ground.
I’m thinking it’s a ground issue. I drove the car into the shop before I pulled the engine out of it. Also once I finally got my laptop to stop crashing I got a U0100 loss of communication to ecm/pcm
9972
 
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