Hi Darth Vader;
The E-32 is an overheat error
The E-34 is an ignition system error
The E-36 is a fuel pressure sensor error
The "Self Diagnostic Results Erasing Procedure" (Without Service Tool) is as follows.
With a watch or accurate timing tool, turn the ignition switch ON with the accelerator pedal released. After 3 seconds, fully depress the accelerator pedal and then release it 5 times. NOTE: The 5 cycles should be repeated quickly in less than 5 seconds ending in the released position. Wait 7 seconds, then fully depress the accelerator pedal and hold for approximately or until you see the alternating code and hour meter reading. Release the accelerator pedal for 3 to 5 seconds. Fully depress the accelerator, and keep the position for at least 10 seconds. Self diagnostic results are erased. Release the accelerator pedal. Make sure the self diagnostic results are errased. Turn the ignition OFF. Turn the key back ON and start the truck. Verify that there are no warning lights on and no error codes are appearing in the meter panel. The hour meter reading should be visible if there are no other issues with your truck.
In closing you should have the 4 psi fuel pressure if your regulator's settings are correct. Depending on the date of manufacture there was an issue with the throttle bodys leaking internally, this could lead to a fire hazard if your truck is within the particular build date.