My Jeep Grand Cherokee 1995, goes out down

My good friends:
I have a Jeep Grand Cherokee 1995, 4x4, 8 cyl. And it goes out when the speed is decreasing, as an example, when stopping to pass a stop, the RPM gets down to zero and turns off.
To recommendation, I have replaced the crankshaft sensor, air and gasoline filter, spark plugs, cleaning body cleaning, verify and all the fuses are well, it does not give me any fault code; I'm going to change spark plug wires, and it's still the same. So I will appreciate tell me what I can do the most. Change the computer?

Check your air decontrol valve (IAC)

command to clean the acceleration body and verify that the mileage functions because the sensor is damaged produces that fault but first clean the acceleration body

I already clean the acceleration body and the IAC valve, and the failure continues to be presented. I will continue with the PCV valve. Thanks for your orientation.

My good friend, I already cleaned the acceleration body and the IAC valve, this is not possible to check its status with the Scaner, I will clean the PCV valve and see what an answer I get. I am thinking that it could be the computer. What do you think, thanks.