Question about 2002 Jeep Liberty
Okay, this is driving me nuts! I have a 2002 Jeep liberty with a blown 3.7L engine. I am going to replace it, but am having trouble finding a 02/03 engine around here locally. I find plenty of 04/05/06 3.7 engines and was wondering if I would be able to drop one of those in? I understand they have different crank reluctor wheels and possibly cam reluctor wheels. I was thinking of putting a 04 engine in and then also swap my PCM for a newer 2004 PCM with the later engine tune that should be calibrated for the 04 engine. Does anyone have any knowledge if this should work? I would expect the wiring harnesses to be the same between the 02 and 04 engines and would think everything would just bolt right up and fire up. Any input would be greatly appreciated, thanks!
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@example.com Thanks for your help.
Posted on Apr 21, 2012
I have just done that engine swap - check my recent post as now the engine turns but wont start - Jeep dealer says -04 engine part numbers on the 3.7 Liberty are the same as the 02-04 Dodge 1500 3.7 - which engine was easier to find & cheaper than the Liberty. I bought the 04 & switched out all of the sensors off my 02 except the crank sensor. That may be why it wont start - I called the parts store & they said the sensor was different. I will let you know how it works out - I will be working on it tomorrow..
Posted on Jun 28, 2009
I build a 2002 3.7 engine in a2004 jeep.the car will not start. take it out again and chahge the crank gaer and the cam gear.the car start running very good,but they took out the 2004 cats out and i build the 2002 cats in,but my engine light still on.they show me the 2 codes,420 and 430.
Posted on Apr 08, 2012
There are also different camshafts, different valve springs, engine will have different emission profile, but in range of adaptation I think.
If you want to have exact this same profile, You should move also camshafts and springs to newer one.
You have to change right cam gear, crankshaft reluctor, intake, probably oil smoke and pan (depends of what model engine is), all sensors. There is also ring in back of crankshaft whitch will block putting 2002 transmission converter, you need to have special tool to remove it. This says that it's lot od work, what we are doing now, nearly all new engine disassembled... in few days we'll try to fire engine, let's see...
ad4le - is Your finally running?
Posted on Feb 24, 2010
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Posted on Jan 02, 2017
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