Jeep Cherokee Forum - 97 4.0 - 2000 4.0 swap!!! Need help

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Zachary Giles

06-24-2018 01:56 PM

97 4.0 - 2000 4.0 swap!!! Need help

my 2000 4.0 blew and I had a 97 laying around. Did the swap. Everything switched over. Had to make a few new mouths for the engine but that was really it. It will not stay running or barley start. I got it started for about a min on its own. Timming? Does my coil pack rail need to be grounded? Any help please. Engine ran mins before I pulled it

dave1123

06-29-2018 02:41 AM

YES! The case of the coil rail needs to be grounded or the high voltage has nowhere to go besides back though the primary windings. Not good. It grounds thru the mounting bolts.

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