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Chris , Shop Foreman
Category: Jeep
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Experience:  Jeep Certified Master Tech
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How can u tell you tell if it is a 2002 to early 2003 engine

Resolved Question:

How can u tell you tell if it is a 2002 to early 2003 engine as I have a 2002 jeep liberty and have found a 2003 3.7 liter are the plugs different on the computer hook ups or does it say jtec on the computers as he is including them
Submitted: 3 years ago.
Category: Jeep
Expert:  Chris replied 3 years ago.

Welcome and thank you for allowing me to assist you! The 2002 and 2003 Liberty 3.7 engines both use a JTEC type PCM (engine computer) with 3 connectors. It was not until 2004 that they used the NGC type PCM with 4 connectors. You should be able to use your existing PCM with the 2003 engine. The only thing you may need to do is to swap the sensors and/or fuel injectors from your 2002 to the 2003 engine if the connectors at the sensors or injectors are different. Otherwise it should be a fairly easy swap.


I hope this information helps, and let me know if you need further assistance with this.




Customer: replied 3 years ago.
So he stripped engine with all the wiring harnesses intact so as long as the plugs fit into each other all will be good
Expert:  Chris replied 3 years ago.

Yes that is correct.




Chris, Shop Foreman
Category: Jeep
Satisfied Customers: 12421
Experience: Jeep Certified Master Tech
Chris and 2 other Jeep Specialists are ready to help you
Customer: replied 3 years ago.
Expert:  Chris replied 3 years ago.

You are welcome! And thank you for using just answer!




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