Yet another weird issue. Just happened
Thread Starter
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Elder User
Joined: Jul 2010
Posts: 534
Likes: 0
From: Kremmling, Colorado
Yet another weird issue. Just happened
Driving back from Denver this morning and truck ran great until the last 30 mile stretch.
It started running weak, nearly gutless. Let it sit for a few minutes and it runs better but not even close to 100% but good enough to get me home. The last tiny hill the truck didn't even wanna pull it. I had just turned into my street and started up the hill and the truck died. Let it sit while I was checking the codes:
P1247
P1248
P1211
the other codes I'm not concerned with because one is the bad AIH and the other is the GPR code and I'm getting that now that I have added the push button GPR mod
I'm not dumping oil anywhere. Oil pressure looked ok on the OEM gauge.
So I let the truck sit for 5 minutes and started. It jumped to life but was running oddly.
As you all may already know I replaced the motor a couple months ago. Installed all new GPs, fuel filter, oil, oil filter. The ICP sensor was the one on the other motor since my original broke. So I'm using it and it's an older one.
Could that be the problem or what else should I check?
It started running weak, nearly gutless. Let it sit for a few minutes and it runs better but not even close to 100% but good enough to get me home. The last tiny hill the truck didn't even wanna pull it. I had just turned into my street and started up the hill and the truck died. Let it sit while I was checking the codes:
P1247
P1248
P1211
the other codes I'm not concerned with because one is the bad AIH and the other is the GPR code and I'm getting that now that I have added the push button GPR mod
I'm not dumping oil anywhere. Oil pressure looked ok on the OEM gauge.
So I let the truck sit for 5 minutes and started. It jumped to life but was running oddly.
As you all may already know I replaced the motor a couple months ago. Installed all new GPs, fuel filter, oil, oil filter. The ICP sensor was the one on the other motor since my original broke. So I'm using it and it's an older one.
Could that be the problem or what else should I check?
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
I suspect a leaky IPR. Other options include a bad LPOP or HPOP, but those would be noticed over time.
Do at he mentioned above, check the ICP sensor, if you can get an AE or similiar tool and check IPR duty cycle. My recommended course of action first is to rebuild the IPR.
Do at he mentioned above, check the ICP sensor, if you can get an AE or similiar tool and check IPR duty cycle. My recommended course of action first is to rebuild the IPR.
Thread Starter
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Elder User
Joined: Jul 2010
Posts: 534
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From: Kremmling, Colorado
Runs great now. I filled up in denver and then came home. None blended. 20 degrees and wind chill. I think I gelled. changed filter and GTG. no leaks that I can find. Not throwing any codes now either
9 ECHO 1
Joined: Aug 2009
Posts: 12,467
Likes: 58
From: Missouri
Get some Diesel Kleen (white jug) and use that as directed. I would also carry their 911 (red bottle) for emergencies. 
Hope thats all it was!
Hope thats all it was!
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Senior User
Joined: Apr 2008
Posts: 257
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You say 'blended'. What do you blend? WVO? BD? ATF? EO?
Either way as someone who lived in Boulder/Weld for about a decade with several converted WVO vehicles, blending is really a non-option in the winter. Thats why everyone says dual tank conversions...
Jus' saying. Since I moved back to Cali I took out my inline electric who heater and extra FPHE...still get to about 170f...
Either way as someone who lived in Boulder/Weld for about a decade with several converted WVO vehicles, blending is really a non-option in the winter. Thats why everyone says dual tank conversions...
Jus' saying. Since I moved back to Cali I took out my inline electric who heater and extra FPHE...still get to about 170f...
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Thread Starter
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Elder User
Joined: Jul 2010
Posts: 534
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From: Kremmling, Colorado
So. It did it again. wait a couple minutes. start. an injector knocks hard then catches itself and belches out a huge cloud of white smoke. A guy stopped and gave me a bottle of that red 911 and that helped some. Builds boost and power again but I can still feel that it's just not quite there.
Bad fuel? maybe that IPR is sticking. Should I just replace it since it is pretty old or can they be cleaned and repaired?
Bad fuel? maybe that IPR is sticking. Should I just replace it since it is pretty old or can they be cleaned and repaired?
still plays with trucks
Joined: Mar 2004
Posts: 1,743
Likes: 3
From: Twin Falls Idaho
You need to see what your fuel pressure is. period. Sounds like a plugged filter or mixing chambers in the tank. that injector knock says "I'm out of fuel". I've fought your problem and spent a ton of money chasing it. Turned out to be a simple fuel pressure problem. IIRC Franco had a similar issue and it was a broken spring in the pressure regulator. Still you need to see what your fuel pressure is doing.
Barney
Barney
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Elder User
Joined: Jul 2010
Posts: 534
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From: Kremmling, Colorado
Would that be an instant problem. The truck has run fine since I replaced the motor. and then today it ran flawless for 120 miles. The last 30 it started *******.
Don't have a lot of shops around here other than the Ford Stealer and it's 40 miles away. How can I check the fuel pressure?
And is the IPR a dealer part? I can't seem to find any online
Don't have a lot of shops around here other than the Ford Stealer and it's 40 miles away. How can I check the fuel pressure?
And is the IPR a dealer part? I can't seem to find any online
Elder User
Joined: Feb 2011
Posts: 518
Likes: 0
From: west sacramento ca
i'd check the intank screens. it's free to fix. you could do the "hutch mod" thing- while you are in there. i think. my truck started running sluggish coming home from friday harbor wash. to ca. i really didn't notice it that bad cept on the up hills- i had to get in it more. the oil sensor on the drivers side head was leaking oil from the hp oil system. the icp i think. replaced it. still kinda sluggish. i dropped my tank and found this stuff:
It's a Van Gogh
Joined: Feb 2010
Posts: 7,795
Likes: 1,326
From: Elk Grove, CA
You need to see what your fuel pressure is. period. Sounds like a plugged filter or mixing chambers in the tank. that injector knock says "I'm out of fuel". I've fought your problem and spent a ton of money chasing it. Turned out to be a simple fuel pressure problem. IIRC Franco had a similar issue and it was a broken spring in the pressure regulator. Still you need to see what your fuel pressure is doing.
Barney
Barney
Lead Driver
Joined: Dec 2012
Posts: 7,870
Likes: 47
From: Tennessee
I was itchin to sudgest tank screens . ^^^ I see it has already been recommended ! I agree , check fuel supply . Modify the pick up if screens plugged . And add a frame mount filter before the pump .
Last edited by JWC 3; Nov 4, 2013 at 08:40 PM. Reason: left off a bit