What is code P1211?
What is code P1211?
OBD-II Code P1211 from a 7.3 Liter Power Stroke is often caused by running “Hot Chips” or tunes that are demanding more ICP (Injection Control Pressure) than the HPOP (High Pressure Oil Pump) can deliver and can be accompanied by a lack of power or rough running.
What is the pressure of the IPR valve?
The IPR is a pulse-width modulated valve operating at 400 Hz. The pulse width is modulated from a duty cycle of 8 to 50% to control injection control pressure from 3.4-20.7 MPa (500-3000 psi).
Where is the IPR valve on a 7.3 power stroke engine?
With a little care and the right tool, an IPR valve can be removed from a 7.3 PowerStoke engine in minutes. The IPR is located on the back of the high pressure oil pump (HPOP), which is located under the fuel filter assembly, down in the “V” of the engine. The IPR valve has been largely unchanged since its introduction in 1994.
Where is the IPR located on a HPOP?
The IPR is mounted in the high pressure pump (HPOP) and achieves injection control pressure regulation by discharging excess oil through a shuttle valve into the front cover and back to sump. The PCM controls the injection pressure regulator (IPR) by an internal ground switch (low side driver) internal to the PCM.
Where is the IPR on a diesel engine?
The easiest way to do this is to trace the wires from the ICP on the driver’s side HP oil rail into the main harness and then out to the IPR deep in the engine “V”. You can identify the IPR by its shiny gold colored solenoid. (The ICP and the IPR are not connected, but the wires for both leave the harness at the same point.)
The IPR is a pulse-width modulated valve operating at 400 Hz. The pulse width is modulated from a duty cycle of 8 to 50% to control injection control pressure from 3.4-20.7 MPa (500-3000 psi).
With a little care and the right tool, an IPR valve can be removed from a 7.3 PowerStoke engine in minutes. The IPR is located on the back of the high pressure oil pump (HPOP), which is located under the fuel filter assembly, down in the “V” of the engine. The IPR valve has been largely unchanged since its introduction in 1994.
Can a pipe wrench be used on an IPR?
DO NOT ATTEMPT TO SQUEEZE THE PILOT VALVE BODY TIGHTLY IE IN A VICE OR IT WILL CRUSH AND BE RUINED. A decent working pipe wrench works well. I’ve opened many IPRs this way without damaging any. The pilot valve slides on the inside of the body, so if it is crushed, it will stick and not work well.
The IPR is mounted in the high pressure pump (HPOP) and achieves injection control pressure regulation by discharging excess oil through a shuttle valve into the front cover and back to sump. The PCM controls the injection pressure regulator (IPR) by an internal ground switch (low side driver) internal to the PCM.
