I did engine replace on a 2002 Wrangler and I wound up with the old 4.0L. Id like to swap this into my 88 4.2 Eagle and keep the FI setup so Im looking for a stand alone harness out of an 02 harness or a link to someone making one or should I even use this block or just move to an OBD1 motor? Thanx
I don't have much experience with those engines compared to the renix motors but have some experiences with them. By the year, I believe that uses a long coil pack with three coils that feed two cylinders each. One coil goes bad, you replace all 3 at once. Instead of a distributor it has a cam sensor and the PCM decides which coil to fire and when. On that vintage of engine, can you pull the cam sensor and stick a distributor in it's place and run obd1 or did they change the block? The jeep I imagine uses a security system from the factory, so you would have to look into what it would take to get past that to use a factory PCM. Mopar and the aftermarket may also have a PCM that would run the engine, as I'm sure there have been quite a few swaps from a carburated engine to a 4.0 performed already. Also just remembered that at least one eaglepedia has a 4.0 swap how to in it already, I will try to find it and post it here.
found a few links that have quite a few great pointers in them, and a 4.0 head swap if you want to go that way instead, as well.
Joshpit's 4.0 Swap Article
http://amceaglesden.com/guide/Joshpit%27s_4.0_Swap_Article (http://amceaglesden.com/guide/Joshpit%27s_4.0_Swap_Article)
PDF version with fixed link. cant fix it on the wiki anymore, so will provide link here instead.
http://www.amceaglesden.com/images/PDFS/Joshs%204.0%20Walkthrough.pdf (http://www.amceaglesden.com/images/PDFS/Joshs%204.0%20Walkthrough.pdf)
Can I swap in a Chrysler 4.0?
http://amceaglesden.com/guide/Can_I_swap_in_a_Chrysler_4.0%3F (http://amceaglesden.com/guide/Can_I_swap_in_a_Chrysler_4.0%3F)
4.0 head swap tips by tougeagle
http://amceaglesden.com/guide/Great_Tips_from_tougeagle (http://amceaglesden.com/guide/Great_Tips_from_tougeagle)