Misfiring With a Knocking sound?

I have a 96 Cherokee 4x4 4.0L with 118,000. So far, I have replaced the plugs, the distro cap, ignition rotor, and wires. Also, had a fuel injector that was dead-- replaced that.

Car still knocks, puts, misfires and hesitates. The knocks usually occur in drive when coming to a stop, or begin to accelerate at low RPMs. Very uniform sound the knocks have-- and they almost sound like a piston --- clickclickclickclick--- any ideas? Not sure how to Describe it better. Sounds like its coming from the lower part of the engine, closer to the cabin.

College classes start Tuesday, and I barely have any money and no way to get rides there-- really hoping to figure it out this weekend

help??

no codes?

have you checked the usual suspects TPS, CPS? Oxy sensor?

goodburbon said:

no codes?

have you checked the usual suspects TPS, CPS? Oxy sensor?

Click to expand...

The codes it's throwing are misfire all Cylinders

How can I check these parts without replacing them? I have already spent a bunch on parts I didn't need, and I am broke.

Do these parts cause a knocking sound as well as the misfires when they go bad?

Update---

Took it to Autozone again, it's pulling a P0202 and a P0141

I read the code chart AS;
P0202==Injector # 2 Cyl malfunction
P0141==02 sensor heater circuit bank 1 sensor 2 malfunction
Hope this helps

Have you found what the problem was ?????