Dodge Repair Questions? Ask a Mechanic for Answers ASAP
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My name is Vlad.
Unfortunately you can not fit a 2005 engine into a 2001 Neon without replacing wiring and computer.
2001 and 2005 have different engine computers and crankshaft and cam shaft sensors and signals are also different so 2001 will not recognize 2005 signals even if you rewire it.
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