2013 Chevy Cruze LT 1.4 L Turbo 233 on the odometer 76 on new engine swap has ran really rough since the swap got done I have checked everything from plug to plugs timing new timing chain everything and still cannot get it to run smooth it throws anywhere from four codes to 26 codes at a time cannot get it to run smoothly cleared codes by going down the road and it got full engine power back full Boost brand brand new for about 5 minutes and then started running really rough again tried clearing the codes again did not do anything any help would be very appreciated picture has the code that is throwing as of right now as I'm typing this

 

if you’re timing is correct and everything else is also, nothing is loose or not connected, you may have to do some PCM relearning, idle relearn, things like that, or you may have a PCM issue, check all your connectors, wiring, grounds, with an engine swap anything can happen, you’ll just have to do some diagnosing and try to narrow it down.

 

Sounds like a wiring or ECU issue possibly a bad ground, damaged harness, or faulty sensors since the problem comes and goes. Double-check all connections, especially around the new engine. The P0171 lean code could point to a vacuum leak, bad MAF, or fuel delivery problem. A scan tool with live data would help narrow it down. If all else fails, the ECU might need checking or replacing.