Is the '96 & up 4.0l the same as my '95?

Venomfab · Mar 17, 2013

I am going to be swapping the motor from my '95 cherokee for a wrecking motor, and have found a pretty good deal on a '98 4.0l from a cherokee. Would this be a direct swap, or is this something that will take a lot of work, if its possible at all? I know that '95 and older is OBDI, and anything after is OBDII.

Thanks for any help.

Tim_MN · Mar 17, 2013

Any 1990-2001 XJ Cherokee or 1993-98 ZJ Grand Cherokee 4.0 L engine block will interchange. 1987-1995 YJ Wrangler blocks will also interchange with XJ and ZJ.

Remove and re-use as needed or required from your original engine: Intake/Exhaust manifolds, flex plate/flywheel, cylinder head, distributor-less ignition or distributor assembly, engine sensors, fan belt driven accessories and mounting brackets.

Venomfab · Mar 17, 2013

I want to replace the entire long block. Head too. I've read something about having to drill and tap the head on the newer 4.0's for the earlier temp sending units.
Ever hear anything about that?

Wayne Sihler · Mar 17, 2013

98 and up head has no hole tapped for the temp gauge sending unit.
Some have drilled &tapped for the sending unit. Others have moved the temp sensor to the T-stat housing,,,a drill& tap proposition also.

ev700401 · Mar 18, 2013

Autometer also has a fitting that goes inline with the heater hose for a temp sender relocation.

Venomfab · Mar 18, 2013

Any difference between the auto and manual?
I wouldn't think so, but a few wrecking yards have asked.

Demonoid369 · Mar 18, 2013

Venomfab said:
I want to replace the entire long block. Head too. I've read something about having to drill and tap the head on the newer 4.0's for the earlier temp sending units.
Ever hear anything about that?

im no expert but the reason why they drill and tap is because the 97+ sending unit on the thermostat area is bi-something something lol it tells the gauge and computer the temp, eliminating the second temp sensor. but since yours is older, you would need to drill and tap to place the second sensor for the older system

Demonoid369 · Mar 18, 2013

Wayne Sihler said:
98 and up head has no hole tapped for the temp gauge sending unit.
Some have drilled &tapped for the sending unit. Others have moved the temp sensor to the T-stat housing,,,a drill& tap proposition also.

i think mid 97' does too because mine is a 97' and it has the coolant sensor at the thermostat and its the only sender and when i went to replace mine i had to order a 98' sender though.

cruiser54 · Mar 18, 2013

Venomfab said:
Any difference between the auto and manual?
I wouldn't think so, but a few wrecking yards have asked.

No.

Is the '96 & up 4.0l the same as my '95?

Venomfab

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Tim_MN

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Venomfab

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Wayne Sihler

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ev700401

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Venomfab

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Demonoid369

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Demonoid369

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cruiser54

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