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i changed the icp sensor the other day and my truck still runs the same it did b4, but my question is the truck runs the same if the icp is pluged in or not so whats its purpose?... JOIN NOW TO REMOVE TRACER

icp sensor????

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  #1  
Old 03-31-2011, 11:08 PM
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Default icp sensor????

i changed the icp sensor the other day and my truck still runs the same it did b4, but my question is the truck runs the same if the icp is pluged in or not so whats its purpose?

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  #2  
Old 03-31-2011, 11:16 PM
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If it runs the same unplugged as with it plugged, it is doing its job... If you have a bad sensor and unplug it, it should run better because it will default back to factory set parameters...

It's purpose it to read HPO pressure going to the injectors.

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  #3  
Old 03-31-2011, 11:39 PM
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o ok i gotya, thanks, i was gettin mad cuz that lil f**ker is wasnt cheap.
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  #4  
Old 04-01-2011, 09:02 AM
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Originally Posted by 95powersmoker View Post
If it runs the same unplugged as with it plugged, it is doing its job...
Actually, that's not true.

If it runs the same while unplugged, then that means that the truck is already running on the "default" IPR mapping.

At idle on stock tuning, there should be about 540 or so PSI of injection pressure. Pressure should rise smoothly depending on load. Default values due to a bad sensor or wiring harness will put the idle PSI at about 725 and you will DEFINITELY hear a difference in the way the truck sounds at idle. Also, the ICP will NOT rise smoothly with load.
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Old 04-05-2011, 04:29 AM
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alright so how do i kno if its working or not? and the truck still has a miss even after new injectors and new cam shaft sensor.

---AutoMerged DoublePost---

alright well today my truck threw a code, p1211, i looked it up on and that code is P1211 ICP Not Controllable - Pressure Abow/Below Desired..... so apparently the damn thing isnt fcking working and its brand new, what do i do to fix this

Last edited by Bigred7.3; 04-05-2011 at 04:29 AM. Reason: Automerged Doublepost
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Old 04-05-2011, 09:23 AM
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Originally Posted by Bigred7.3 View Post
alright so how do i kno if its working or not? and the truck still has a miss even after new injectors and new cam shaft sensor.

---AutoMerged DoublePost---

alright well today my truck threw a code, p1211, i looked it up on and that code is P1211 ICP Not Controllable - Pressure Abow/Below Desired..... so apparently the damn thing isnt fcking working and its brand new, what do i do to fix this
Did the CEL come on at WOT? Did it come on at idle? More details about the code.
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Old 04-05-2011, 10:52 AM
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i dont kno when it came on. ive got a superchip programer and its got the dtc reader in it and every now and then ill plug it in to see if there are any new codes that come up and last night that code showed up, so i looked it up on the fourm here and thats what it says it is "ICP Not Controllable - Pressure Abow/Below Desired"
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  #8  
Old 04-05-2011, 11:48 AM
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Reset it and don't worry about it for now. I can get that code running in my extreme tune at WOT...
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  #9  
Old 04-10-2011, 01:34 AM
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i reset the code, and the truck was fine (still has a miss tho) but yesterday i went to drive the truck after it only sat for 3 or so hours and it started with a loping idol, it leveled out after a few seconds but it ran lis complete dog sh*t.... i shut it off and read the codes and it threw the p1211 code again, so i cleared it and started the truck bac up with no lope idol but it still ran bad so i read the codes again and the p1211 code was bac i cleared it once more and has been ok sice. why does it keep doing that
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Old 04-27-2011, 03:53 PM
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wish I could help you out, i'm having the same problem!!! is it inconsistently running bad??

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Last edited by CSIPSD; 04-27-2011 at 04:03 PM. Reason: Watch the language please...
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