My engine stalls at idle why?

I have tested all the sensors accept the fuel pressure regulator and all seem to be working, getting the correct voltage for power, and sending out the correct voltage signals. How can I test the regulator and the torque converter clutch? I have taken it to the transmission shop twice and they deny anything is wrong with it after the worked on it, even though it was overfilled by two quarts and the crankshaft sensor was cracked.

Thank you, Will test that tomorrow evening after work. What about testing the torque converter? I just dont understand why it runs okay with the check engine light on, but when reset the truck goes haywire

I was getting a constant 42psi of fuel pressure before my fuel pump died and the car wouldnt start. I replaced the fuel pump a few weeks ago and have not had a chance to test it again, but the car would actually start. The stalling was not fixed however when I replaced the pump and filter. The codes are 'fuel system lean' and 'oxygen sensor circuit low, bank one' I have replaced my 02 sensors and no luck. I only have problems though when the check engine light is reset. I have replaced the ECM and no luck. Tested all sensors relating to air and fuel mixtures and they are all getting the correct power voltage and sending out the correct voltage ranges. Could I have a vacuum leak somewhere and when the engine light comes on it compensates for the leak?

I have tested the air intake temerature sensor, and it is working properly, I have not tested the regulator yet or coolant sensor. I will tonight. I have a buddy who works at a shop and we put it on the lift, the 02 sensor was not grounded, but whoever replaced the sensor cut off the wiring harness and wired it wrong, we rewired and the snapon computer said it was now getting a signal, but was extremely low, they used really cheap wire connectors so I bought a new harness and sensor and will be replacing tonight also. Could it be that from hooking it up wrong it broke the resistor inside the sensor?

Alright, So I checked my fuel pressure and am getting a constant 50psi even when cracking the throttle. We found the wiring harness was cut off, so we replaced the harness and sensor, truck runs good now! The codes went away too. However after a few days, I got a code p0133 '02 sensor 1/1 slow response' The truck drives fine, with or without the engine light on. What are some causes of this code? Could the sensor be defective? Could I have a whole new set of problems?

We used a snap-on computer and watched the voltage to the pcm in real time, while driving around town, all voltage to and from the sensor was correct. I reset the light and it hasnt come back in a few days, So it seems everything is well! Of course now that I say that, something else will break!

Will do, doing a tune up tomorrow or Friday, oil change, o2 sensor, filters, all the good stuff. I heard a lot of people talking about SeaFoam, Is it any good? And for my engine, Chrysler 360ci 5.9 v8, Which vaccumm line feeds all my cylinders? The brake booster or the PCV valve? Thank you for putting up with all of my questions

What is the reasoning behind that? Will the brake booster hurt anything?