Dodge neon
2 Answers
One reason might be the PCM, which has to match the motor, and if you swapped PCMs then it has to be reflashed for the anti-theft system.
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BritishTech77 answered 6 years ago
Yep he's right! Either Reflash pcm or take the old pcm which not sure if it would fit with wiring. Providing you have same plugs, sensors etc.