every now and then starting problem
Postmaster
Joined: Feb 2004
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From: Levittown
Its not the fuel pump. You would have driving issues.
Does not take much fuel pressure for a PSD to start.
Get a realtime scan on it to be shure. Iam not the type to throw
parts at something praying its the fix. Odds are its the IPR.
This does not rule out inj o-rings.
I see ipr's on flebay go 120.00 area.
Bill
Does not take much fuel pressure for a PSD to start.
Get a realtime scan on it to be shure. Iam not the type to throw
parts at something praying its the fix. Odds are its the IPR.
This does not rule out inj o-rings.
I see ipr's on flebay go 120.00 area.
Bill
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Senior User
Joined: Jul 2008
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an ipr would keep it from starting even after its cooled down? it has not run since 4 this afternoon and it still wont start it just cranks. damnit i dont know anyone with a scan tool irony is i was planning on getting one in a few weeks...
Postmaster
Joined: Feb 2004
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From: Levittown
Changing from hard start to no start problem.
Oil hot is thinner than oil cold.
The hot thin oil cannot build pressure to start the motor.
I would bet that if you drained the hpop and filled it with
cold oil it would start. You will know if it starts in the morning
(cold soaked). Be shure the hpop is full. You can deplete it
cranking the motor.
The IPR valve determins how much oil goes to the drain or the injectors.
Bill
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From: Levittown
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Senior User
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it started this morning sure enough
going to get an ipr from ford... does anyone got a pic where it located on the hpop?
going to get an ipr from ford... does anyone got a pic where it located on the hpop?
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Smokin
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Here's what the IPR looks like
The nut on the back is a tin nut, and thats the part you'll see sticking out of the very back of the HPOP. Take that tin nut off, and the gold electrical cover will come off, exposing the IPR.
I you'll need an extra deep socket to get it off...the size is escaping me right now.
The nut on the back is a tin nut, and thats the part you'll see sticking out of the very back of the HPOP. Take that tin nut off, and the gold electrical cover will come off, exposing the IPR.
I you'll need an extra deep socket to get it off...the size is escaping me right now.
Postmaster
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From: Levittown
Smokin
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I love that procedure. Makes me wonder why the guy just "happened" to have a plastic champagne cork lying around...
Postmaster
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From: Levittown
Bill
Post Fiend
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From: Texas Coast
Here is some other info that may expand your thoughts on the issue.
:?) DRRXR
IPR: Injection Pressure Regulator Output; The PCM controls the high pressure oil system by varying the duty cycle of the IPR. The IPR controls the oil bypass circuit of the high pressure pump. 0%=full return to sump (open valve), 100%=full flow to injectors (closed valve). The PCM monitors the system with the ICP input. The PCM can control fuel delivery to the injectors by increasing the IPR duty cycle which increases fuel pressure through the injector nozzles. PID: IPR (% of duty cycle), MFDES Mass Fuel Desired an internal PCM calculation based on load demand (MG
ICP: Injection Control Pressure sensor Feedback input; The PCM monitors the high pressure oil system to determine if it needs to be increased if load demand increases. It also uses this to stabilize idle speed. volts in, 1.0volt@580psi, 3.22volts@2520psi. PID: ICP (pressure), ICP V (voltage) .
:?) DRRXR
IPR: Injection Pressure Regulator Output; The PCM controls the high pressure oil system by varying the duty cycle of the IPR. The IPR controls the oil bypass circuit of the high pressure pump. 0%=full return to sump (open valve), 100%=full flow to injectors (closed valve). The PCM monitors the system with the ICP input. The PCM can control fuel delivery to the injectors by increasing the IPR duty cycle which increases fuel pressure through the injector nozzles. PID: IPR (% of duty cycle), MFDES Mass Fuel Desired an internal PCM calculation based on load demand (MG
ICP: Injection Control Pressure sensor Feedback input; The PCM monitors the high pressure oil system to determine if it needs to be increased if load demand increases. It also uses this to stabilize idle speed. volts in, 1.0volt@580psi, 3.22volts@2520psi. PID: ICP (pressure), ICP V (voltage) .
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