P1211 not due to being chipped??

[KansasDiesel]

Fuel pressure 43 psi, My fuel system is not original, I have an electric fuel system,( same pump as the 99 PSD ) electric pump with a gauge in the system. So I have a constant fuel pressure.

[action4478]

Can you elaborate on the fuel system, what all did you change?....

[KansasDiesel]

Here is the AE information from yesterday.
At 44:44 is engine start, the truck seems to run smoothly,
At 45:03 CEL comes on and truck runs rough.But the AE is showing almost normal readings.

Sorry I tried to seprate the numbers and it just ain't working.

Time Injector Control Pressure (PSI) [0.00 - 5076.32] ICP - Volts (V) [0.00 - 5.00] Injector Ctrl Pres DC (%) [0.00 - 100.00]

44:42.1 22.06 0.26 14.84
44:43.2 20.93 0.32 51.56
44:44.2 1452.58 3.24 25.39
44:45.3 1651.12 2.13 19.92
44:46.3 1674.88 2.1 15.62
44:47.4 1527.81 2.04 11.33
44:48.4 1360.38 1.78 8.2
44:49.5 1243.29 1.74 5.47
44:50.5 1178.24 1.63 4.69
44:51.6 1187.86 1.54 4.69
44:52.6 1187.86 1.63 4.69
44:53.7 1158.45 1.6 4.69
44:54.7 1174.28 1.6 4.69
44:55.8 1242.16 1.74 4.69
44:56.8 1227.45 1.74 4.69
44:57.9 1242.73 1.77 4.69
44:58.9 1242.73 1.6 4.69
45:00.0 1254.61 1.65 4.69
45:01.0 1272.14 1.65 4.69
45:02.1 1245.55 1.77 14.06
45:03.1 724.03 2.11 14.06
45:04.2 724.03 2.12 14.06
45:05.3 724.03 1.91 14.06
45:06.4 724.03 1.96 14.45
45:07.5 724.03 1.93 14.45
45:08.6 724.03 1.97 14.06
45:09.7 724.03 2.04 14.06
45:10.8 724.03 2.01 14.45
45:11.9 724.03 2.02 14.45
45:13.0 724.03 2.04 14.06
45:14.1 724.03 2.03 14.06
45:15.2 724.03 2.19 14.45
45:16.2 724.03 2.09 14.45
45:17.3 724.03 2.15 14.06
45:18.4 724.03 2.08 14.06
45:19.5 724.03 2.16 14.06
45:20.6 724.03 2.06 14.06
45:21.7 724.03 2.06 14.45
45:22.7 724.03 2.24 14.45
45:23.8 724.03 2.17 14.06
45:24.9 724.03 2.15 14.06
45:26.0 724.03 2.21 14.06
45:27.1 724.03 2.19 14.45
45:28.2 724.03 2.15 14.06
45:29.3 724.03 2.11 14.45
45:30.4 724.03 2.12 14.45
45:31.5 724.03 2.19 14.45
45:32.5 724.03 2.08 14.06
45:33.7 724.03 2.23 14.06
45:34.7 724.03 2.23 0
45:35.8 0 0 0

[KansasDiesel]

Today, Action4478 gave me some ideas on troubleshooting.

While the engine was running I unplugged the IPR and the engine kept running. Points to the IPR being bad.

Also I unplugged the ICP and it didn't make a difference on the idle, which also points to the IPR. NOTE: ( a couple of days ago I unplugged it and it smoothed the idle which indicates the ICP at fault)

Also why is my analog gauge still showing high pressure and rising but the AE showing 724psi?

[KansasDiesel]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: action4478</div><div class="ubbcode-body">Can you elaborate on the fuel system, what all did you change?.... </div></div>

Fuel system, I believe a Carter pump part for a 1999 PSD, same fuel lines, fuel filter assy removed and mechanical pump removed. Aftermarket fuel filter 5-10 micron, mallory FPR set at factory setting of 43psi. I have a gauge on the FPR to show the return pressure.

[action4478]

Ed , I was wondering if you are having any trouble shutting the truck off....

[action4478]

I'm thinking out loud here,, the analog guage show's a higher pressure than the PCM is calling for,,, the pressure is rising because the PCM doesn't Know what is happening.. Abstract , I know ,It would seem that the IPR is not responding to the PCM.....

[KansasDiesel]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: action4478</div><div class="ubbcode-body">Ed , I was wondering if you are having any trouble shutting the truck off.... </div></div>

No trouble shutting off the truck, shuts down like normal

[KansasDiesel]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: action4478</div><div class="ubbcode-body">I'm thinking out loud here,, the analog guage show's a higher pressure than the PCM is calling for,,, the pressure is rising because the PCM doesn't Know what is happening.. Abstract , I know ,It would seem that the IPR is not responding to the PCM..... </div></div>

I hope thats the case, I am looking online for a IPR right now. And will check with Ford or International tomorrow. But I think I will try changing the IPR first. If it doesn't work I suppose I have a spare.

[johndeerebones]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KansasDiesel</div><div class="ubbcode-body">Today, Action4478 gave me some ideas on troubleshooting.

While the engine was running I unplugged the IPR and the engine kept running. Points to the IPR being bad.

Also I unplugged the ICP and it didn't make a difference on the idle, which also points to the IPR. NOTE: ( a couple of days ago I unplugged it and it smoothed the idle which indicates the ICP at fault)


Also why is my analog gauge still showing high pressure and rising but the AE showing 724psi? </div></div>

Sounds like the ipr isn't fully opening, so the engine is getting more icp pressure than what the pcm is trying to give it.

The ipr has to open more to get less pressure in the system, it lets extra oil through to meet the desired pressure.

Could be the solenoid isn't producing suffectient magnetic field, or the pilot is sticking in the valve itself..

[KansasDiesel]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johndeerebones</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KansasDiesel</div><div class="ubbcode-body">Today, Action4478 gave me some ideas on troubleshooting.

While the engine was running I unplugged the IPR and the engine kept running. Points to the IPR being bad.

Also I unplugged the ICP and it didn't make a difference on the idle, which also points to the IPR. NOTE: ( a couple of days ago I unplugged it and it smoothed the idle which indicates the ICP at fault)


Also why is my analog gauge still showing high pressure and rising but the AE showing 724psi? </div></div>

Sounds like the ipr isn't fully opening, so the engine is getting more icp pressure than what the pcm is trying to give it.

The ipr has to open more to get less pressure in the system, it lets extra oil through to meet the desired pressure.

Could be the solenoid isn't producing suffectient magnetic field, or the pilot is sticking in the valve itself.. </div></div>

Humm is 12 volts going to make the magnetic field? If I were to take the IPR out and jump the magnet would the pilot move? Would that tell me anything? or what voltage is going to the magnet? I have a varible power supply and can set any voltage to it.

[action4478]

It would be the first time someone could run a pulse fast enough to make it work....(I have wondered about this for some time....)

[johndeerebones]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KansasDiesel</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johndeerebones</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KansasDiesel</div><div class="ubbcode-body">Today, Action4478 gave me some ideas on troubleshooting.

While the engine was running I unplugged the IPR and the engine kept running. Points to the IPR being bad.

Also I unplugged the ICP and it didn't make a difference on the idle, which also points to the IPR. NOTE: ( a couple of days ago I unplugged it and it smoothed the idle which indicates the ICP at fault)


Also why is my analog gauge still showing high pressure and rising but the AE showing 724psi? </div></div>

Sounds like the ipr isn't fully opening, so the engine is getting more icp pressure than what the pcm is trying to give it.

The ipr has to open more to get less pressure in the system, it lets extra oil through to meet the desired pressure.

Could be the solenoid isn't producing suffectient magnetic field, or the pilot is sticking in the valve itself.. </div></div>

Humm is 12 volts going to make the magnetic field? If I were to take the IPR out and jump the magnet would the pilot move? Would that tell me anything? or what voltage is going to the magnet? I have a varible power supply and can set any voltage to it. </div></div>


Yes it will, BUT the ipr is run off of pulse width modulation. The pcm turns ground on and off very very rapidly to open the valve a certain percentage, it is not as simple as on or off.

With the KOEO you should have 12v at one of the ipr wires, the other one is grounded by the pcm, unless you have a fluke meter that will read duty cycle, that is really all you can check. I think AE will only tell you what duty cycle the pcm is trying to open it to.

You can however put 12v + and - to the solenoid with it off the valve and see if it makes a strong field, just don't leave it hooked up wrong, it isn't made for continous duty. Either way you will have to get an ipr, they aren't available seperately.

[KansasDiesel]

I understand, I was just thinking it was like a selonoid valve, that if the magnetic part was on the IPR I could put 12v to it and see the plunger move ( out of the truck of course)

[johndeerebones]

<div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johndeerebones</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KansasDiesel</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: johndeerebones</div><div class="ubbcode-body"><div class="ubbcode-block"><div class="ubbcode-header">Originally Posted By: KansasDiesel</div><div class="ubbcode-body">Today, Action4478 gave me some ideas on troubleshooting.

While the engine was running I unplugged the IPR and the engine kept running. Points to the IPR being bad.

Also I unplugged the ICP and it didn't make a difference on the idle, which also points to the IPR. NOTE: ( a couple of days ago I unplugged it and it smoothed the idle which indicates the ICP at fault)


Also why is my analog gauge still showing high pressure and rising but the AE showing 724psi? </div></div>

Sounds like the ipr isn't fully opening, so the engine is getting more icp pressure than what the pcm is trying to give it.

The ipr has to open more to get less pressure in the system, it lets extra oil through to meet the desired pressure.

Could be the solenoid isn't producing suffectient magnetic field, or the pilot is sticking in the valve itself.. </div></div>

Humm is 12 volts going to make the magnetic field? If I were to take the IPR out and jump the magnet would the pilot move? Would that tell me anything? or what voltage is going to the magnet? I have a varible power supply and can set any voltage to it. </div></div>


Yes it will, BUT the ipr is run off of pulse width modulation. The pcm turns ground on and off very very rapidly to open the valve a certain percentage, it is not as simple as on or off.

With the KOEO you should have 12v at one of the ipr wires, the other one is grounded by the pcm, unless you have a fluke meter that will read duty cycle, that is really all you can check. I think AE will only tell you what duty cycle the pcm is trying to open it to.

You can however put 12v + and - to the solenoid with it off the valve and see if it makes a strong field, just don't leave it hooked up wrong, it isn't made for continous duty. Either way you will have to get an ipr, they aren't available seperately. </div></div>

err I meant don't leave it hooked up long....