Q: Brand new motor will not start

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My son bought a rebuilt motor from a company on the internet and he has never been able to get it started the only thing i can think of is that when he was putting things back together he had the battery hooked up and had every thing hooked up to the alternator and then dropped it and the sparks went crazy and after that he finished hooking every thing up and tried to start it for the first time and it would not start do you think he fried the computer the only code it comes up with is one that says something about the auto shutdown so I check the auto shutdown relay and fuse the they check out OK are the motors in jeep made different for different yrs I know that some 4.7 have either a 16 tooth or 32 tooth thing on the crankshaft and the motor has the right one on it is there something else that could be different here is the vin if it help 1J4GW48N44C102579 Thanks so much for your help and time

My car has 178000 miles.
My car has an automatic transmission.

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