Have had this on going issue with my 92 ranger 2.3 2wd. Runs fine for a bit then starts running rough and will stall and sometimes does not wanna start back up and will spit and sputters under load. Have tried new air mass new ignition coils new icm new egr new egr position sensor new pcv new 02 sensor new plugs and wires new idle control valve new egr solenoid new crank position sensor and new pcm still have the same issue nothing seems to fix it anyone have any ideas

 

Welcome to the forum

Reads like its running out of gas?

Next time it stalls and doesn't start, press in the pin on the fuel pressure test port on the fuel rail, see if there is fuel pressure at that time

Or spray some gasoline or Ether into the intake and see if it starts and dies, indicating no fuel

 

Have check fuel pressure stays consistent around 30psi to 36 psi have drove around with pressure gauge on it and stay consistent when running rough and when stalling and has new fuel filter and gas does not seem to be aireating

 

And have no faults and everything on the live data I can see looks correct

 

If fuel and spark are good then its your imagination, its actually not running rough or stalling :)

3 things are needed for a cylinder to fire
1. Spark, at the right time
2. Fuel, in the right mix with air
3. Compression, above 120psi

When there is stumbling and/or stalling then one of those 3 things are wrong or missing

Spraying fuel into the intake, 50/50 test, with a No Start is one of the better ways to see whats missing
If engine fires up then injectors or fuel pressure is the issue, spark and compression are OK

If engine doesn't fire up then it spark or compression

Compression is not likely to be intermittent but when you have taken spark and fuel off the table that is whats left

On 1992 2.3l the computer only runs fuel injectors
Spark is done by ICM(ignition control module), it is hooked up to Crank Sensor and Coil Packs directly, so for startup no computer input is needed
After start up the computer adds Spark Advance, like Vacuum Advance on a distributor

Also on 1992 2.3l, ONLY the exhaust side spark plugs and coil pack are used when starter motor is active, intake side only starts to work when RPMs are above 400
This was to give 1 set of spark plugs full voltage for start up, this was change in 1995 and up Rangers