Engine Mechanical problem
1991 Jeep Cherokee 6 cyl Four Wheel Drive Automatic 200000 miles

My 91 jeep cherokee 6cyl 4.0L, when warn check engine light comes on, and car will stall on acceleration. I have changed air filter, fuel pump, fuel filter, plugs, rotor, cap, changed fuel pump relay. Cleaned fuel tank, fuel rail, and fuel injectors. What are where is the possible stalling problem?

Thanks