odd ICP and stutter
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Mountain Pass
Joined: Dec 2012
Posts: 146
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odd ICP and stutter
Having another issue with the truck. Over the past couple of weeks I have driven from Alaska to Colorado to Texas to Georgia to Missouri then back to Texas. During my first visit to Texas truck died while Idling in parents driveway. Restarted easily enough but Immediately died again. Let it sit a while then restarted and had no issues until about a week later when pulling into my in-laws driveway in Georgia it died again with immediate restart then died about halfway up there driveway. Let sit a while and no more issues. Now back in Texas today coming back from town (about a 60 mile drive) I noticed it started to shudder some but never actually died. truck did throw a code every time i had a issue p2623. Did notice during the stutter I saw ICP drop to the mid 200's. Drive from AK-CO was with trailer loaded CO-TX was with trailer unloaded same for TX-GA and GA-MO. MO-TX was loaded Highest delta I recall was about 11 deg loaded uphill. So whats the opinions Bad IPR or HPO leak?
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Mountain Pass
Joined: Dec 2012
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have only seen the 200 once it occured during the most recent incedent with the studdering. And this is a very intermitent problem (Always the hardest to track down). IPR was replaced about a year ago after it was discovered to be the cause of an intermitent no start issue.
Junior User
Joined: Jul 2007
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I'm idling around 550 with a stutter occasionally. I keep throwing codes for cylinder contribution/balance too. If I clear the codes while driving they don't come back until I'm idling again.
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Mountain Pass
Joined: Dec 2012
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Sounds like you may have some bad injectors. My truck did the same when 2 and 7 went. what cylinders do you have the faults on. To answer previous question I am runnig T-6 same thing i have used since i bought the truck.
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Lead Driver
Joined: Sep 2012
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From: Manteca,Ca
Unregistered what was the ICPV?
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Mountain Pass
Joined: Dec 2012
Posts: 146
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Update. Made it about an hour into the drive from TX to CO and truck started acting up again to the point it was stalling and would restart after a few minutes think I got it narrowed down to IPR valve Should be here tomorrow will update when done.
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Mountain Pass
Joined: Dec 2012
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So Installed new IPR valve and made it to Colorado Springs. Have about a 1000 on it now and I am starting to experience the same symptoms. Did I get a bad IPR or Could there be a bigger issue?
Post Fiend
Joined: Oct 2009
Posts: 12,123
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From: N. Fort Worth, tx
Replace the ipr pigtail. Splice it as farback in the harness as the new connecor allows. When doing so you will also need to either reuse or replace the heat wrap on that section of harness.
Not saying its going to fix it but ive had success on a few dozen trucks with the same concern.
Not saying its going to fix it but ive had success on a few dozen trucks with the same concern.
Junior User
Joined: Aug 2012
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Replace the ipr pigtail. Splice it as farback in the harness as the new connecor allows. When doing so you will also need to either reuse or replace the heat wrap on that section of harness.
Not saying its going to fix it but ive had success on a few dozen trucks with the same concern.
Not saying its going to fix it but ive had success on a few dozen trucks with the same concern.
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Mountain Pass
Joined: Dec 2012
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That was my next plan I even ordered one when i ordered the new IPR. But I got an ICP connector instead. Where is a good place to get the connectors. Also I am looking into replacing my entire harness. noticed alot of stuff i didnt like when i was doing the IPR I found the injector harnesses for a decent price any sugestions on where to look for the main harness would prefer new. (Dont want some one elses problem.)