Swapping 4.0 from a 97 Manual Tj to a 4.0 Auto TJ - Jeep Wrangler Forum
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Old 05-08-2013, 05:51 PM   #1
Usmctank84's Avatar
Join Date: Feb 2011
Posts: 118
Swapping 4.0 from a 97 Manual Tj to a 4.0 Auto TJ

Hey guys,

I guess to start out I own a 1997 Jeep Wrangler Tj 4.0 sport with a 5 speed manual transmission. My wife loves jeeps almost as much as I do and felt bad because she can't drive my jeep because it's a manual. So I ended up buying her a 1998 Jeep Wrangler TJ 4.0 sahara automatic to drive around (I know, what a great husband). The sahara had a "timing" issue when I purchased it but the issue ended up being no compression in 2 of the 6 cylinders with the lower part of the engine making a lot of noise :0. So I was thinking out of the goodness of my heart I would swap my 4.0 sport engine into her Sahara. I know they are the same engine and only 1 year difference in the Jeeps but was making sure its 1) possible because I'm going from a manual jeep into an automatic and 2) if there is anything else I need to exchange over like the engine computer or anything else. I've searched seemingly dozens of websites, forums etc. but when I type it in the search it brings up v8 swaps and 2.5 to 4.0 swaps but haven't seen anything pertaining to what I'm doing. I don't know that mileage is relevant but both jeeps have under 110k on them. Any one done this or has advice? Thanks so much in advance.

Semper Fi,

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