'04 6.0 idling
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Elder User
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'04 6.0 idling
I've got a boss who owns an tuned '04 psd. The other day he was complaining about the idle fluctuating while at stop lights and what not.
Today, he said that the problem has gone away and he believes it is because he took it on a trip running 75MPH at approx 3500-4000 RPMs for about 40 miles. He also said that he boosted to 30 PSI several time during the trip as well.
Could it have been sticking vanes or clogged injectors maybe? Do you think that the hard running cleaned it up a bit or at least contributed to it?
Today, he said that the problem has gone away and he believes it is because he took it on a trip running 75MPH at approx 3500-4000 RPMs for about 40 miles. He also said that he boosted to 30 PSI several time during the trip as well.
Could it have been sticking vanes or clogged injectors maybe? Do you think that the hard running cleaned it up a bit or at least contributed to it?
Super Moderator
Joined: Jul 2004
Posts: 21,113
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From: Ohio
ICP is the injection control pressure. Here a few items that could pertain to a rough idle, rising idle or general problem. The truck needs to go to the dealer so the technician can monitor all the functions.
06E17 and problems
On some of the affected vehicles, corrosion may exist at the electrode surface on the Exhaust Pressure (EP) sensor; fuel delivery timing during cold weather may not be optimal; and/or Exhaust Gas Recirculation (EGR) system operation at idle may not be optimal. These conditions may cause "Check Engine" light illumination, lack of power, hard starting, and/or rough engine operation. In addition, the on-board diagnostic (OBD) system on F-250/350 and Excursion vehicles may not properly monitor the performance of the emission control systems.
TSB 06-246
Some 2003-2004 F-Super Duty and Excursion vehicles equipped with the 6.0L engine built on or before 9/29/2003 may experience a P006A or P132B Diagnostic Trouble Code (DTC) with a lack of power condition, surge, or turbocharger flutter after performing Field Service Action (FSA) 06E17, or after recalibrating the vehicle with the inferred Exhaust Pressure (EP) strategy.
ACTION:
This procedure is to be used only on vehicles that have received the inferred EP calibration update. There are a variety of reasons why a customer could experience a lacks power condition with the inferred EP calibration. These can include causes a person may not directly see as impacting the condition or codes set. For example; a Mass Air Flow (MAF) / Manifold Air Pressure (MAP) code can be related to a MAF sensor or a MAP sensor problem. However, those codes can be caused by other items such as: intake leaks, exhaust leaks, Exhaust Gas Recirculation (EGR) problems, and aftermarket modifications. Care should be taken to follow the entire procedure outlined below. Skipping a step may lead to being unable to properly diagnose one of these other conditions setting a code.
IPR problems
Erratic supply of high pressure oil to injectors may cause a rough running engine. High pressure oil flow can be disrupted by faulty check valve(s) or a faulty Injection Pressure Regulator (IPR) valve. To diagnose, first perform a slow neutral run up in park / neutral. If the engine runs rough between 1200 and 2300 RPM proceed to Check Valve Diagnosis; if the engine runs rough between 3000 and 4000 RPM, perform PC/ED pinpoint test Q, if the engine continues to run rough between 3000 and 4000 RPM after having validated the ICP sensor and connector, then replace the IPR valve.
06E17 and problems
On some of the affected vehicles, corrosion may exist at the electrode surface on the Exhaust Pressure (EP) sensor; fuel delivery timing during cold weather may not be optimal; and/or Exhaust Gas Recirculation (EGR) system operation at idle may not be optimal. These conditions may cause "Check Engine" light illumination, lack of power, hard starting, and/or rough engine operation. In addition, the on-board diagnostic (OBD) system on F-250/350 and Excursion vehicles may not properly monitor the performance of the emission control systems.
TSB 06-246
Some 2003-2004 F-Super Duty and Excursion vehicles equipped with the 6.0L engine built on or before 9/29/2003 may experience a P006A or P132B Diagnostic Trouble Code (DTC) with a lack of power condition, surge, or turbocharger flutter after performing Field Service Action (FSA) 06E17, or after recalibrating the vehicle with the inferred Exhaust Pressure (EP) strategy.
ACTION:
This procedure is to be used only on vehicles that have received the inferred EP calibration update. There are a variety of reasons why a customer could experience a lacks power condition with the inferred EP calibration. These can include causes a person may not directly see as impacting the condition or codes set. For example; a Mass Air Flow (MAF) / Manifold Air Pressure (MAP) code can be related to a MAF sensor or a MAP sensor problem. However, those codes can be caused by other items such as: intake leaks, exhaust leaks, Exhaust Gas Recirculation (EGR) problems, and aftermarket modifications. Care should be taken to follow the entire procedure outlined below. Skipping a step may lead to being unable to properly diagnose one of these other conditions setting a code.
IPR problems
Erratic supply of high pressure oil to injectors may cause a rough running engine. High pressure oil flow can be disrupted by faulty check valve(s) or a faulty Injection Pressure Regulator (IPR) valve. To diagnose, first perform a slow neutral run up in park / neutral. If the engine runs rough between 1200 and 2300 RPM proceed to Check Valve Diagnosis; if the engine runs rough between 3000 and 4000 RPM, perform PC/ED pinpoint test Q, if the engine continues to run rough between 3000 and 4000 RPM after having validated the ICP sensor and connector, then replace the IPR valve.
