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1999 to 2003 7.3L Power Stroke Diesel
7.3L Power Stroke Diesel equipped Super Duty and Excursion.


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Old Fri, August 24th, 2012, 12:53 AM
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907DAVE 907DAVE is offline
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Sounds like maybe an IPR or CPS issue.
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Old Fri, August 24th, 2012, 03:08 AM
808diesel 808diesel is offline
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I would also check your oil level. I have seen low oil cause that problem when cold sometimes the truck would actually die and long crank to restart. Once it starts getting warm doesn't do it til it sits for a few hours. Had A few trucks in the last month with that problem and found roughly 6-8 quarts of oil in all of them.
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Old Fri, August 24th, 2012, 01:11 PM
rammertide07 rammertide07 is offline
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Quote:
Originally Posted by 907DAVE View Post
Sounds like maybe an IPR or CPS issue.

What do you think about the pics of the IPR duty cycle numbers I posted?

Oil level is about a quart low. It smells like burnt charcoal. I don't remember oil smelling like that...even used. And this is the first time I'm running synthetic. But its already been a couple thousand miles with no issues. Maybe the composition has changed slightly Its also 10W-30...which I've ran it it regular dyno before. I started to buy oil yesterday but figured I'd try the CPS first.
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Old Fri, August 24th, 2012, 09:36 PM
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To be honest I never looked.

IPR% really is not what you want to be watching anyways, ICP would tell the story better.

IF you had an ICP problem then look at IPR% to see if its being commanded to do what its doing, but if the problem does not happen long enough your Scangauge will never catch it.
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Old Mon, August 27th, 2012, 09:55 AM
rammertide07 rammertide07 is offline
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Replaced the CPS, topped off the oil with 1qrt of Hot Shot Secret, replaced the fuel filter....its better but still does it. The idle seems to have a little stumble to it (or its all in my head). It only cuts out around shift points, after I get to OD its fine. Gonna unplug the ICP today and check it out. Can't do a whole lot with this hurricane coming in. (On a side note, anybody know someone that has a PTO or LP generator?) Gonna check there harness make sure its good and secure, couldn't imagine it coming lose though. I've even considered the air filter. I've had it act similar to this when my AFE filter was dirty.
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