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Jeep Wrangler YJ
YJ General Discussion
Manual vs. Automatic ECU for 4.2 to 4.0 swap
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<blockquote data-quote="machoheadgames" data-source="post: 436774" data-attributes="member: 18789"><p>You can use any 91-95 4.0 PCM on a manual 4.0. The only picky combo is a 94-95 automatic. Those need the 94-95 PCM for their locking torque converter. Their TC will burn up if the PCM is not locking it up in 3rd.</p><p></p><p>You can not use any 2.5L PCMs to run any 4.0 drivetrain.</p></blockquote><p></p>
[QUOTE="machoheadgames, post: 436774, member: 18789"] You can use any 91-95 4.0 PCM on a manual 4.0. The only picky combo is a 94-95 automatic. Those need the 94-95 PCM for their locking torque converter. Their TC will burn up if the PCM is not locking it up in 3rd. You can not use any 2.5L PCMs to run any 4.0 drivetrain. [/QUOTE]
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Jeep Wrangler YJ
YJ General Discussion
Manual vs. Automatic ECU for 4.2 to 4.0 swap
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