how do i fix multiple cylinder missfire on 96 jeep cherokee?

Answer 1

check the timing, valves, and plugs

Answer 2

check your engine codes or have a diagnostics check done ,but I am betting it is coil related .
If it was 1 or 2 pluggs or a couple of wires I would say "replace both" but I would think about coil or coils if your having multiple missfire issues at all times.
use a spark tester and see if you may not be getting spark at all cylinders from your coil or (coils if distributor-less equipped)to the pluggs .coil packs are a little expensive for some vehicles .but on a vehicle 10yrs old I would replace them anyway ;fresh coils will give it better spark regardless .

Answer 3

Assuming you have changed your plugs and plug wires already. Check your distributor cap you could be getting a ring fire on your distributor. If contacts look worn change it. And you have tried a couple of different brands of gasoline.

Next You could be having a timing problem check your timing.

I've also had a case where a fuel pump going bad would cause that when you get up to around 4.000 RPM.

Another place to look is your injector system and injectors.

Answer 4

XJ's are hard on plug wires, start the motor after dark, lift the hood and look to see if the wires are arcing to something

Answer 5

if it has a 5.2 v-8 and you have tuned it up an eleminated an injector problem then an often overlooked problem could be at fault....the lower intake gasket

Answer 6

plugs ,wires ,cap and rotor

Answer 7

CHANCES AREYOU HAVE BAD PLUGS AND WIRES REPLACE WITH NEW