IPR?
Postmaster
Joined: Feb 2006
Posts: 3,201
Likes: 4
From: waynesville, mo.
- TURBO LEARN PROCEDURE:
- NOTE:
- Clear the KAM by disconnecting both batteries for 5 minutes.
- Reconnect both batteries.
- Start the vehicle and let the vehicle idle. If the conditions below are correct, the learn will occur automatically.
- NOTE:
- EOT between 120-250° F (49-121° C).
- Idle speed between 570 to 780 RPM.
- VSS reading less than 2 MPH (3 Km/h).
- APP below 1.5%.
- EGR is commanded off (EGRDC = 0).
- No hard fault DTCs.
Elder User
Joined: Oct 2010
Posts: 552
Likes: 1
- TURBO LEARN PROCEDURE:
- NOTE:
- Clear the KAM by disconnecting both batteries for 5 minutes.
- Reconnect both batteries.
- Start the vehicle and let the vehicle idle. If the conditions below are correct, the learn will occur automatically.
- NOTE:
- EOT between 120-250° F (49-121° C).
- Idle speed between 570 to 780 RPM.
- VSS reading less than 2 MPH (3 Km/h).
- APP below 1.5%.
- EGR is commanded off (EGRDC = 0).
- No hard fault DTCs.
My VGT is working good. I know the relearn process and have been through it many times. I'd just like to know how you could just "lose" the KAM while driving down the highway. And why only the VGT and not the tranny?
Postmaster
Joined: Feb 2006
Posts: 3,201
Likes: 4
From: waynesville, mo.
Its not the KAM, just the vgt learn. Happens when one or more of the previously mentioned perameters get out of spec. The vgt will be working well. Its the programming thats the concern.
Thread Starter
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Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
The problem is so intermittent that it'll be hard for me to know if this helps or not.
Elder User
Joined: Oct 2006
Posts: 874
Likes: 4
From: mckenna wa
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Elder User
Joined: Oct 2006
Posts: 874
Likes: 4
From: mckenna wa
the IPR controls the high pressure oil going to the injectors so no matter what kind of tune you have it has to open and close all the time. If it was fully closed all the time or open all the time there would be no reason to have a gas pedal.
Junior User
Joined: Mar 2011
Posts: 91
Likes: 0
From: cowichan bay b.c. canada
my own experience with ipr was same as yours idle would roll actually sudn surge only when outside temp reached high 90 to 100 or more . dealer chased problem for 5 years with no luck . truck is 2004 late 6.0 egr delete new oil cooler new turbo etc . long story made short every year towed 12000 lb 5th wheel to mexico 8 years in a row every time outside temp exceeded 90 degs idle would roll . i constantly monitered ipr and noticed % would jump 20% or so every time idle surged . i replaced ipr valve and problem solved for 2 years now old valve was clean and insulation pack was good and re used on new valve.i beleive valve was binding from excessive heat . good luck with your problem let us know if you solve it
Thread Starter
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Laughing Gas
Joined: Jan 2012
Posts: 1,103
Likes: 1
From: Lakeland, TN
my own experience with ipr was same as yours idle would roll actually sudn surge only when outside temp reached high 90 to 100 or more . dealer chased problem for 5 years with no luck . truck is 2004 late 6.0 egr delete new oil cooler new turbo etc . long story made short every year towed 12000 lb 5th wheel to mexico 8 years in a row every time outside temp exceeded 90 degs idle would roll . i constantly monitered ipr and noticed % would jump 20% or so every time idle surged . i replaced ipr valve and problem solved for 2 years now old valve was clean and insulation pack was good and re used on new valve.i beleive valve was binding from excessive heat . good luck with your problem let us know if you solve it
1st Gear
Joined: Sep 2007
Posts: 1
Likes: 0
My Truck currently has the PID saying conditions are not met to relearn. I've checked your items below if they are being met and they all are. The only one I'm not sure of is hard DTC faults. The only faults I have is a software incompatible with the FICM.
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