cherokee

sparkn89

sparkn89

Well-Known Member
Joined
Sep 12, 2006
Location
Canton N.C.
for you cherokee guys? how do you tell a 4.0 from a 4.0 h.o. and a 87 4.0 from a 94 4.0? if you can help me it would be great guy thanks.
 
4.0 ho came between 91 and 94 I believe. Throttle body has 4 bolts holding it on if it is a HO motor or newer. The pre-91 motors were a renix flavor and had 3 bolts on the throttle body, other than that they are pretty similar looking from the outside. I think the older renix motors also had a funky heat shield kinda thing between the intake manifold and the exhaust manifold.
 
pretty sure all 4.0's after 91 were 4.0....or it just may be that ive never seen a regular 4.0 after 91. the HO came in 92 and pretty sure there were no older ones made, since its a differnt system.

the HO's sport HO badges on the bottom left of the hatch. as for spoting it on just the block or with the motor out of the suv..........its gonna be hard
 
1991 was the first year of the HO. 1990 was the last year of the renix engine. The computer and washer bottles are moved around compared to a 1991 or later
 
Probably more information that you wanted.

Engines

2.5L I4 carburated - 105 hp @ 5000 rpm, 132 ft lb torque @ 2800 rpm - used in 84-85 models
2.5L I4 TBI (fuel injected) - 117 hp @ 5000 rpm, 135 ftlb @ 3500 rpm - used in 86 and updated in 87-90 to 121hp
2.5L I4 MPI (multi-port injection) - 130 hp @ 5250 rpm, 139 ft lb @ 3250 rpm - used in 91-00

GM 2.8L V6 - 115 hp @ 4800 rpm, 145 ft lb @ 2400 rpm - used in 84-86

Renault 2.1L 4cyl. Turbo Diesel - 85 hp @ 3750 rpm, 132 ft lb @ 2750 rpm - used in 85-87

Italian VM 2.5L Turbo Diesel - 140 hp, 236 ft lb torque - used in overseas XJs

4.0L I6 EFI "Power Tech" - 177 hp @ 4750 rpm, 220 ft lb @ 4000 rpm - used 87-90
4.0L I6 MPI "Power Tech HO" (High Output) - 190 hp @ 4750 rpm, 220 ft lb @ 4,000 rpm - used in 91-95 and updated in 96-01 to 225 ft lb torque @ 3000 rpm (00-01 models use a distributorless ignition system)


Any time I need stock specs on my Cherokee I check out this JeepForum thread.

Any time I'm about to start a project I check out this thread.

I'm pretty sure the Renix XJ (87-90) had a knock sensor so look for that.
 
The later HO motors around 00-01 have a head thas does not flow as good as the earlyer HO heads.
 
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