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Old 06-04-2014, 09:03 AM
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How do these readings look?

I'm still learning here and could use some advice on the display readings of my tuner. could you all give me an idea if all is well here, was driving for 15 min. with the cruse on and decided to take a photo of the livewire display.
Thanks for looking.
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How do these readings look?-display-readings.jpg  
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Old 06-04-2014, 09:09 AM
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10* delta isn't that bad, just keep an eye on it. Your ICP is reading ICPv, you can check the health of HPOP system with a WOT run, your ICPv should hit about 4.6v to 4.8v, which translate to about 4000psi.


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Old 06-04-2014, 09:16 AM
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Ok I will have to find the abbreviation sheet for what you just posted. the PO replaced the oil cooler for the second time back in October. I defiantly don't trust the slime they call coolant in these things. they flushed and repeated several times.

BTW Nice Avatar.. Those your sisters? just kidding.. Thanks and any advice is welcome!
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Old 06-04-2014, 09:46 AM
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ICP is injection control pressure which is read by the ICP sensor. The ICP sensor uses a 5v Ref wire (5v positive power wire). The sensor reads high pressure oil (0-4000psi) and translates the psi to volts (0v-4.8 range). The more the pressure increases, the more the volts go up.

You can use that reading to determine the health of the HPOP system (High Pressure Oil Pump, standpipes, STC fitting, and Dummy plugs). If you have a small leak in the HPOP system or a weak HPOP, it will show up in a WOT (wide open throttle) run. The ICP sensor reads the pressure thru volts, if the HPOP has issues, the pressure will not be able to reach about 4.8v or 4000psi at WOT.

Some custom tune writers will fool the ICP pressure in the PCM to squeeze out more power. The tune will make it look like you have a weak HPOP by only displaying about 1500psi, so if you test the WOT run when tuned and only see 1500psi instead of 4000psi, you will need to do the test with the stock tune.

LOL, I use to be able to change my avatar thru my phone, but Autoguide app screwed that up right after Christmas!!


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Old 06-04-2014, 05:37 PM
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Quote:
Originally Posted by Lilpooh View Post
ICP is injection control pressure which is read by the ICP sensor. The ICP sensor uses a 5v Ref wire (5v positive power wire). The sensor reads high pressure oil (0-4000psi) and translates the psi to volts (0v-4.8 range). The more the pressure increases, the more the volts go up.

You can use that reading to determine the health of the HPOP system (High Pressure Oil Pump, standpipes, STC fitting, and Dummy plugs). If you have a small leak in the HPOP system or a weak HPOP, it will show up in a WOT (wide open throttle) run. The ICP sensor reads the pressure thru volts, if the HPOP has issues, the pressure will not be able to reach about 4.8v or 4000psi at WOT.

Some custom tune writers will fool the ICP pressure in the PCM to squeeze out more power. The tune will make it look like you have a weak HPOP by only displaying about 1500psi, so if you test the WOT run when tuned and only see 1500psi instead of 4000psi, you will need to do the test with the stock tune.

LOL, I use to be able to change my avatar thru my phone, but Autoguide app screwed that up right after Christmas!!


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Lilpooh,

Could the earlier ICP sensors read differently? My early 04 ICPv only hits 4.5 and it will stay there through a full throttle run. I am reading it using the Torque app so I am not sure if there is a way of displaying higher; if there is, I havent found it as I have tried every setting they have.

Sorry for the derail,
Sean
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Old 06-04-2014, 06:08 PM
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Quote:
Originally Posted by seanol View Post
Lilpooh,



Could the earlier ICP sensors read differently? My early 04 ICPv only hits 4.5 and it will stay there through a full throttle run. I am reading it using the Torque app so I am not sure if there is a way of displaying higher; if there is, I havent found it as I have tried every setting they have.



Sorry for the derail,

Sean

I also have the early 04. Max volt reading of the ICP is 4.8v. Your displaying 4.5v isn't bad, might be the Torque app only reading to 4.5v or not enough load on the motor (like towing).

It's when you start maxing out to about 4.0v or less and truck feels slower that I would start looking for issues with sensors or HPOP system.

Here is one of my runs hitting 4.7v.




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Old 06-04-2014, 06:19 PM
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Quote:
Originally Posted by Lilpooh View Post
I also have the early 04. Max volt reading of the ICP is 4.8v. Your displaying 4.5v isn't bad, might be the Torque app only reading to 4.5v or not enough load on the motor (like towing).

It's when you start maxing out to about 4.0v or less and truck feels slower that I would start looking for issues with sensors or HPOP system.

Here is one of my runs hitting 4.7v.




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Thanks!

I should have enough load as I am running 38" tires on 3.73 gearing. Under full throttle I will hit 4.5 and hold that until I let off. Sounds like I don't have an issue yet.

Appreciate the feedback,
Sean
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Old 06-05-2014, 05:03 PM
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Ok I'm going to reload the stock tune and do the diagnostic tests that the tuner has, zero to 60. and a few others.. and also check out the ICP readings,

How long do you hold wot to conclude the test?
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Old 06-07-2014, 04:38 PM
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Programed the economy/performance tune and the Delta dropped to 6 deg. under normal 55-60 mph.
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