can i put a 2005 3.7 in my 2003 liberty?


Asked by Oct 22, 2011 at 09:53 PM about the 2003 Jeep Liberty Limited 4WD

Question type: Maintenance & Repair

do i need to reprogram the ecu?

7 Answers

yes,everything will work,no on ecu.

3 out of 3 people think this is helpful.

papa thx for reply but i was told only a 2002 or 2003 engine will only work due to the reluctor rings on the crankshaft and cam not allowing the ignition and fuel injectors to fire not allowing the engine to start.

5 out of 5 people think this is helpful.

you were told wrong,00,01 02- 03 04 05 will work,every 3 years they change,

2 out of 2 people think this is helpful.

again thx papa i have found a very low mileage 3.7 out of a 2005 liberty with only 4k miles on it for 1400.00 and was hoping this engine would be a direct fit with no electrical problems and compatibility problems with the 2003 ecu.

3 out of 3 people think this is helpful.

My information tells me the reluctor ring on the crankshaft has to be changed and the tone gear on the camshaft as well! For the 2005 liberty 3.7 ! To be compatible with your system! The windows on the camshaft have a different sequence so it must be changed or timing will be off!

2 out of 2 people think this is helpful.

Ask your nearest Auto Zone Manager

Una pregunta yo tengo un Jeep liverti 2006 que le puse el mono blok de un 2002 sies compatible ono porque no me arranca nomás esterea pero no tiene chispa en las bujías gracias por su ayuda aber di alguien puede sacarme de estas duda

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