How do you know if your IPR valve is bad?
Common symptoms of a bad 7.3 Powerstroke IPR
- Poor, rough, or unstable Idle, especially when you let off the accelerator.
- Injectors surging when you accelerate.
- Stalling out.
- Crank no start.
- Loss of overall power.
Can you test a IPR valve?
First of all, you should be performing an air leak test prior to dead-heading the system. The IPR can then be tested audibly (after high-pressure leaks are ruled out) but commanding full duty-cycle with air applied and then shutting it off to listen for a change in the amount of air you hear.
Where is the IPR valve located?
The IPR valve is located in the output circuit of the high pressure oil pump (HPOP). The IPR valve is commanded closed to build pressure and open to bleed off pressure to the crankcase.
What does a IPR sensor do?
Your ICP sensor – 7.3 Injection Control Pressure Sensor – continuously monitors your diesel engine’s oil delivery pressure. The 7.3 ICP sends the current pressure reading to the Powertrain Control Module (PCM) which in turn signals the 7.3 Injection Pressure Regulator (IPR) to add or reduce pressure.
Is there a way to remove the IPR valve?
The easiest way to remove the IPR valve is to build a special IPR removal tool. Some Ford dealerships remove the HP oil pump to change/service the IPR. With this tool, it can be done in minutes. Said tool is comprised of a 1/2″ 29mm drive deep 6 point or 1 1/8″ socket with a 4 or 5 inch piece of 1″ flat steel welded across the back of it.
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.
How is the IPR of a power stroke engine controlled?
It is controlled by the injection pressure regulator (IPR), the injection control pressure (ICP) sensor and the strategy in the power train control module (PCM). IPR valves are generally trouble free, but they have been known to become sticky if debris enters the valve or if it suffers from a damaged O Ring.
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.)