Engine Stalling; 2,300 miles from home! - Ford Powerstroke Diesel Forum
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Old 12-26-2009, 01:29 PM
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Engine Stalling; 2,300 miles from home!

First, i just want to say that this forum has been really great!

Quick background:

I recently did an injector cups job on my 7.3 about a week ago. I got the truck ready for a trip from yuma, az to livonia, mi to visit the family for christmas. While i did the injector cups, flushed the coolant system, differentials, transfer case and replaced the fuel filter.

The problem:

When I made it to livonia michigan on the 22nd, the truck stalled while in a traffic jam. The issue has gotten worse in the past couple days and happens much more often while driving. It happens mostly when i'm trying to accelerate from a dead stop. It also happens when i let my foot off of the throttle and then reapply throttle, so in all cases, the engine is at idle and i'm trying to give it throttle. A few times, it felt like i was not getting fuel while i was trying to accelerate and then it just died. I read some threads and a majority of the threads pointed to the cam position sensor (CPS). I replaced that today and the issue is still present. I drained the fuel bowl and I checked my recently installed fuel filter and it is still clean as can be. I am not throwing any codes and the truck starts right up every time after it stalls. Voltage and oil pressure gages look good when the issues occurs, when it stalls, the battery light turns on. I checked the valve cover harnesses and those are connected and do not appear to be loose. The truck was around a 1/4 tank when i got to livonia, to rule out a cracked fuel pick up line in the tank, I also filled up the tank today and it is still happening.

Any ideas?
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Old 12-26-2009, 01:42 PM
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Could be the IDM or ICP sensor going bad? Just a thought
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Old 12-26-2009, 01:49 PM
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Do those go bad (or intermittent) without throwing codes?
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Old 12-26-2009, 01:53 PM
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Another question; I read in another thread that a guy said to change the fuel filters. I replaced the fuel bowl filter right by the high pressure oil pump (HPOP). Is there a second filter somewhere else?

Also, what does ICP and IDM stand for?
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Old 12-26-2009, 01:57 PM
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I'm not sure if it would throw codes or not. What are you reading codes with?
That guy might've been talking about the 6.0. Just one fuel filter on the 7.3.
IDM injector driver module
ICP injector control pressure sensor
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Old 12-26-2009, 02:55 PM
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I just took the truck up to an "Advance Auto Parts" store and they used their code reader. I'm not sure what type or brand it was. I'm not sure if the computer would store codes unless the service engine soon light came on. The only time I see that light on is when I turn the key on and all of the lights turn on for a second or two.
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Old 12-26-2009, 03:10 PM
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Yea it'll throw soft codes (codes w/out the light) and hard codes (codes with light)
Don't think AZs code reader is gonna do it. I use em for parts but not for any knowledge on these trucks. Our trucks have an OBDII plug but Ford proprietary software/code reading.
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Old 12-28-2009, 06:32 AM
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I CHANGED THE HARNESS UNDER THE V-C TO THE INJECTORS N IT WORKED FOR ME BUT MINE WAS THROWING CODES BUT GOOD LUCK
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Old 12-28-2009, 06:49 AM
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Good idea to check the UVCH like Drew said and make sure there aren't bare wires anywhere.

Also, there is a possibility that your fuel gelled up. How cold was it in MI?
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Old 12-28-2009, 08:44 AM
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When i did the injector cups, the harness looked great everything was in working order the first 1,000 miles of the trip. Now that I think about it, this issue didn't occur until i hit the cold weather here in michigan. Right now it's below 30 degrees, I spoke to one of my Dad's buddies about it and he says that it couldn't be the fuel here in michigan because they treat the fuel for cold weather but who knows. Is "Diesel 911" the stuff to use if the fuel gels up?
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