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!
219303
Joined
·
2,807 Posts
I think the third post in this thread explains the reason why you want to follow the advice of the fourth and fifth posts.
Since it's basically the same engine, the 2002 PCM should continue to work, but apparently it needs 2002 sensors and such. Apparently, they changed sensors and such for 2004, so you may be doing a complete rebuild of the electronics if you try to use a 2004 PCM.
It seems the trick is remaining with your 2002 electronics, and fooling the PCM into believing you still have a 2002 engine, by following the advice of the fourth and fifth posts.
Since it's basically the same engine, the 2002 PCM should continue to work, but apparently it needs 2002 sensors and such. Apparently, they changed sensors and such for 2004, so you may be doing a complete rebuild of the electronics if you try to use a 2004 PCM.
It seems the trick is remaining with your 2002 electronics, and fooling the PCM into believing you still have a 2002 engine, by following the advice of the fourth and fifth posts.
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
-
?
