From 2004 to measure the ICP pressure? - Ford Powerstroke Diesel Forum
 
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post #1 of 3 Old 07-04-2011, 08:07 AM Thread Starter
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From 2004 to measure the ICP pressure?

If the ICP sensor is attached to both ScanGauge II looks into pressure 575-590 idle.
If, however, the ICP sensor to take off so the pressure is 850-900.
ICP sensor determines the fuel pressure, oil pressure based on?
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post #2 of 3 Old 07-04-2011, 08:23 AM
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To explain that, I might as well explain the high pressure oil system.
The engine has 2 separate oil systems. The low pressure side is the same that you would find in any engine.
Behind and below the oil filter housing is the oil cooler. As the oil enters the oil cooler, some of it is directed to a small reservoir under the oil cooler body.
This reservoir feeds the High Pressure Oil Pump (HPOP).
Screwed into the side of the HPOP is the Injection Pressure Regulator (IPR) valve. This valve controls the amount of pressure that the HPOP will make.
The Injection Control Pressure sensor (ICP) monitors the oil pressure in the high pressure oil system.
The ICP reports the pressure reading to the PCM (Powertrain Control Module). The PCM uses this information to control the IPR to achieve optimal High Pressure Oil pressure in the oil rails sitting on top of the injectors.
The fuel injectors use the oil under pressure to inject the fuel. Picture the fuel injector the same as you would a needle at the doctors office. The force used to push the plunger down to inject is controlled by the high pressure oil.
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post #3 of 3 Old 07-04-2011, 08:28 AM Thread Starter
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Why the ICP readings (SG II), only 575-590?

ICP, IPR or something else bad?
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