Icp duty cycle

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May 21, 2019 | 07:01 PM

#16

87crewdually

Lead Driver

Joined: Dec 2006

Posts: 6,496

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From: So. Jersey

Quote:

Originally Posted by Junior Anthony

Are those readings on idle or wot?

.Hot-Idle.

May 21, 2019 | 07:29 PM

#17

bismic

Fleet Owner

Joined: Nov 2003

Posts: 27,900

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Junior Anthony - 63 psi at hot idle for EBP seems a little excessive. Something is wrong there.

May 21, 2019 | 08:18 PM

#18

87crewdually

Lead Driver

Joined: Dec 2006

Posts: 6,496

Likes: 94

From: So. Jersey

Quote:

Originally Posted by bismic

Junior Anthony - 63 psi at hot idle for EBP seems a little excessive. Something is wrong there.

Don't count in the SCT showing accurate reading for EBP. I remember seeing this before. Jr Anthony should get Forscan or another device to verify it before going crazy thinking something is wrong.

May 21, 2019 | 09:41 PM

#19

bismic

Fleet Owner

Joined: Nov 2003

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Good point. IIRC the Edge doesn't show an accurate EBP either!

Aug 21, 2020 | 05:27 PM

#20

vGwap jvse

New User

Joined: Aug 2020

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Likes: 0

Icp problem how to find leak on a .33 icp duty cycle

Quote:

Originally Posted by 87crewdually

I'm assuming you are talking about IPR duty cycle % at idle, not ICP pressure. 21% is rule of thumb for me. If you see it getting higher at idle, say 35%, then more than likely the system is developing a leak.
23% is no worry.

how do I find leak?

Nov 25, 2023 | 05:31 PM

#21

Coop76

2nd Gear

Joined: Nov 2023

Posts: 2

Likes: 2

From: Willamette Valley Oregon

ICP Idle percentages at Idle???

[I am curious what my ICP duty cycle percentage should be at Idle currently I am at 0.14 but sometimes it could be in the low 20s but not to often is 0.14 kinda low? If so why possibly I been reading and .22 to .24 is what I am seeing as a common any input would help I currently run a SCT Livewire TS+ with Stock options for the performance mode I have running issues misses alot while accelerating I have New ICP IPR New Glow plugs and Controller New premium Injectors blue spring and soon as I get home a new EGR and new Mah Sensor as well as New Map Sensor any Suggestions, Soon I want to get a tune written and downloaded just can't afford currently but will in a couple weeks? I need some Direction or Info Please and Thankyou Coop
QUOTE=87crewdually;15181069]I'm assuming you are talking about IPR duty cycle % at idle, not ICP pressure. 21% is rule of thumb for me. If you see it getting higher at idle, say 35%, then more than likely the system is developing a leak.
23% is no worry.[/QUOTE]

Nov 25, 2023 | 06:42 PM

#22

wpg_250

Fleet Mechanic

Joined: Feb 2023

Posts: 1,924

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.22 here at idle via Livewire TS

Nov 28, 2023 | 10:18 AM

#23

Jokester00

Tuned

Joined: Oct 2022

Posts: 481

Likes: 334

From: The State of Confusion

Quote:

Originally Posted by Coop76

Your IPR% is a commanded value from the PCM based on the feedback from the ICP sensor. If your ICP sensor is out of whack, it will send incorrect data to the PCM, which will then adjust the IPR based on that incorrect data.

Monitor and check your ICP, ICP desired, ICPvoltage, & IPR% values @ KOEO. Start the truck and then check them again. Your ICPv should be ~.18-.23v KOEO and go up from there, based on pressure.

-jokester