I am new to this forum. I have searched my issue and I am confused on what it might be. Hopefully someone can help...
My wife started the truck (engine cold, 100 degree day) and drove about 5 miles. Everything seemed fine. She pulled into a parking lot and the engine died and would not restart. I arrived about 15 minutes later and the engine would crank, but would not fire. It seemed like it was not getting fuel. I could feel a vibration on the fuel filter/line when the ignition was turned on and the fuel pump kicked on. The fuel filter bowl had fuel in it as well. I checked the oil and it was low, but still on the dipstick. I added 3qts of oil and it brought the oil level into the bottom of the operating range. The HPOP reservoir was also low, so I refilled it. The truck still would not start. The dash oils pressure gauge would slightly move while cranking, but it was not in what I would call normal operating range. I sprayed some ether in the air box while cranking and the engine would fire but not stay running. When the engine fired on the ether, the oil pressure was in the "normal" range.
About 2 hours after the truck died, I had it towed home. When we got it home, I tried to start it agin but it would not start. About a half hour later I took my tuner/code reader out to check and see if I could pull a code off of the truck. I scanned for codes while the ignition was off and detected nothing. I turned the ignition on and tried to start the truck, and it fired up like nothing ever happened. I pulled the truck out of the driveway, turned around and parked back into the driveway. I checked for codes and got a code for an Exhaust Pressure Sensor. I cleared the code and it did not return. I cut the truck off and restarted several times and everything seemed fine. I took some pictures of some real time data from my code reader if that helps anyone. These were taken at idle, in park.
This picture below was taken at 1500 rpm, under no load.
Can anyone point me in the right direction? Do you think it is an IPR, IPC, CPS, LPOP or something else?
Thank you in advance,
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