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 Post subject: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 4:22 pm 
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okay i gotta 2003 se neon and i did a engine swap from a 2002 neon rt and it wont start now , on my 2003 neon my crankshaft sensor was in the front under the headers, and the 2002 neon engine the crankshaft sensor was in the back i had to splice the sensor and run it to the back ?? now what ......


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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 4:48 pm 
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Location: Altenburg, MO
Wrong forum. But the '03 PCM will not run the '02 motor. The '03 uses a NGC PCM and the '02 uses a SBEC PCM. Crank signals are different.

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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 5:21 pm 
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n00b
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Location: western WI
moved...


Nope, it will never start the way you have it now. The '02 crankshaft has what could be called 7 notches per revolution for the crank sensor to read. The '03 has what could be called 30 notches per revolution. There is no way to "convert" one to the other. You can either find another '95-'02 engine or change out wiring as needed and use an '03-'05 computer.

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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 5:53 pm 
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Neon Mechanic
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Correct, like everyone said you cannot drive a pre 03 engine with a 03-05 harness and PCM.

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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 6:02 pm 
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lets c well my car is a 2003 se neon i have a 02 rt engine in it but same harness n same comp


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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 10:05 pm 
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Neon Mechanic
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you will need at minimum the R/t computer and wiring harness from the 02. They changed engine controllers from 02 to 03.

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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Sun Apr 17, 2011 10:28 pm 
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i got the 02 comp n harn


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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Mon Apr 18, 2011 5:32 am 
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Neon Mechanic
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texasSrt23 wrote:
i got the 02 comp n harn

Then get to installing. You need the 02 harness and PCM if you want to run that 02 engine.

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 Post subject: Re: 2002 neon rt engine swap in a 2003 se neon
PostPosted: Mon Apr 18, 2011 6:27 pm 
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http://www.facebook.com/?ref=logo#!/photo.php?fbid=10150153763793742&set=a.10150153763098742.294618.529573741&type=1&theater ................


do i change out the fuse box 2??


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