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Posted on Jun 11, 2008

2003 Liberty Engine Swap Blown Motor How to fix timing.

Hi all, I have a 2003 Jeep Liberty, we took the 3.7l engine out and replaced with a 2004 3.7l ( out of a 04 liberty), everything installed great, we are left with one last problem. The new engine has a different reluctor wheel around the crank(more teeth), and our timing is off in coordination with the pcm on the 03 liberty. How can correct this timing problem, im sure someone has swapped a year or two newer motor before and solved this problem. Any help would be greatly appreciated, my baby has been sitting for over a month now. Just need to fix the timing and she will fire right up...Thanks Everyone for your help...Chad

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  • Posted on Jun 25, 2009
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Hey, did you ever figure this out? Ever consider swapping PCM's for a newer 04 PCM that would be tuned for this engine?

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Will a 2003 3.7l Jeep motor swap with the same motor from a 2004? Jeep liberty

auto or stick shift??????
the EKG engine it is.
are you talking just a long block swap using all original
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why not look it up.?
at jeep.com
or at Hollanders, call the wrecking yard, they use this service
they can tell tell you what fits. and not by year,
or they'd go broke fast.
the 3.7 is not only used on this one car, why limit self.?
my 2010 WK has it.


facts (to avoid issues) history of the block.
In 2005, the 3.7 engine was treated to numerous economy and idle-quality changes, with a new cam profile, lash adjusters, rings, and a 9.7:1 compression ratio.

seems 02 to 09 works for sure.
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now jeep real, this the real p/n of said engine.
R2637056AB
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http://www.moparpartsoverstock.com/p/__SPORT/ENGINE-Long-Block--Remanufactured/6823869/R2637056AB.html
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I want to change a 3.7 motor off of 2004 jeep Liberty 2wd in order to fit my 2002 jeep liberty 4wd?

engine swaps are complex as is mixing engines to wrong transmissions.
so both are 3.7L, is that it?
you never said what exacty didnt fit.
the flex plate to TC
or TC to A/T pump side mismatch.
????????
if its the flex then get the correct flex plate.
or call jeep parts? ask them for the right parts
the side of the trans has the trans part number
my guess is all you need is the correct flex plate for engine to TC.
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2002 Jeep Liberty 3.7L Engine Swap to newer 2005 engine

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2002 Jeep Liberty 3.7L Engine Swap to newer 2004 engine

Has anyone made this work yet? I have the same problem 2002 jeep 3.7 and just installed a 04 motor. Timing is off. Some one had a good idea of mounting the crank gear to the out side of the harmonic ballancer and mounting the sensor with a bracket. What about the cam gear on the left side. Does the timing cahain have to come off to remove it? Or has any one swaped the wiring harnest, and computer.
Please email me back. [email protected] Thanks for your help.
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