97 4.0 - 2000 4.0 swap!!! Need help

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06-24-2018, 01:56 PM

Zachary Giles

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Model: Cherokee (XJ)

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

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06-29-2018, 02:41 AM

dave1123

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Location: Manlius, east of Syracuse, NY

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Year: 2000 XJ Sport & WJ Laredo

Model: Grand Cherokee (WJ)

Engine: 4.0L

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.