I need help!! Rough Idle HPOP code
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4wd Low
Joined: Apr 2013
Posts: 12
Likes: 1
From: Washington
I need help!! Rough Idle HPOP code
So here goes I have a 1999.5, 7.3, 6spd. with 170,000mi.Edge w/ attitude, intake, stock down pipe to 4”.<o
></o>Scenario<o
></o>1 I can be driving freeway speed service engine light willcome on I will lose acceleration power.<o
></o>2 stop and go traffic service engine light comes on when Icome to stop truck will idle down almost to die, then idle up.<o
></o>3 I start truck cold or hot service engine light is on samerough idle as #2<o
></o>I see no pattern to why or when it happens, heavyacceleration, or just sitting, or constant speed. Code on scanner is for HPOP.Can anyone help me? <o
></o>
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Welcome to FTE. How long since your last oil change and is it full? Any oil additives? What is the actual number for the code you're getting? If you unplug your ICP sensor, does it make a difference?
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4wd Low
Joined: Apr 2013
Posts: 12
Likes: 1
From: Washington
F-350 thanks for the welcome.
Oil change within 1000 miles I did it before my oil change. But only in the crank case. I have seen topics on HPOP oil change but made no sense to me because the oil just drains into crank case.
No oil additives.
I do not know about the ICP sensor I will check that in the morning. I don't have the number but it was low ICP
Tugly It happens at any amount of fuel.
Oil change within 1000 miles I did it before my oil change. But only in the crank case. I have seen topics on HPOP oil change but made no sense to me because the oil just drains into crank case.
No oil additives.
I do not know about the ICP sensor I will check that in the morning. I don't have the number but it was low ICP
Tugly It happens at any amount of fuel.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Does the truck shake or buck when this happens? If not, this has the smell of an ICP sensor... maybe.
The next time you're idling rough, unplug the ICP while you're running - it won't hurt anything.
The next time you're idling rough, unplug the ICP while you're running - it won't hurt anything.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
Keep an eye out for additional codes. A P1211 code is very common when running a chip or programmer. The light will come on during heavy load and go off on it's own a while later. This should not cause any loss of power.
Overboost or other things could cause a loss of power, but not with that code. The issue at a stoplight sounds like something different unless this all traces back to an ICP / IPR issue.
And you're right, don't waste your time with the HPOP oil change. That will not fix your problem.
Overboost or other things could cause a loss of power, but not with that code. The issue at a stoplight sounds like something different unless this all traces back to an ICP / IPR issue.
And you're right, don't waste your time with the HPOP oil change. That will not fix your problem.
Hotshot
Joined: Jan 2011
Posts: 18,849
Likes: 179
From: Puget Sound
Sometimes I take things for granted... have you returned the truck to stock so we can troubleshoot the truck, instead of the Edge?
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4wd Low
Joined: Apr 2013
Posts: 12
Likes: 1
From: Washington
Ok heading out to sniff around. I do not have a code reader, is there any specific thing I need to look for buying a new one?
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More Turbo
Joined: Nov 2012
Posts: 727
Likes: 1
From: Chariton, IA
If your planning on doing the work on the truck yourself, you would be better off with a scan tool like AE or the Infinity from DP. you can see what all the sensors are doing and record data. Very helpful when these guys are helping you troubleshoot.
More Turbo
Joined: Nov 2012
Posts: 727
Likes: 1
From: Chariton, IA
Proves your ICP is going out. might be your problem. They push oil up through them when they start going out. Riffraff and Diesel o'rings has them for about $145. My dealer wanted $200 so I didn't mind waiting a couple days for the mail.
Post Fiend
Joined: Mar 2007
Posts: 26,966
Likes: 50
From: Texas
I thought your Edge could read the codes? Skip the code readers at the parts store that say all vehicles 96 and up. The 7.3 engine is not OBDII compliant so they won't read engine codes on these motors.
Oil in the ICP plug is a sign there might be a problem. I've had oil in my ICP plug before and had no issues for 100,000 miles. I swapped it out to see if a new one made any difference, and it didn't. A local guy had ICP problems and I let him borrow my old, leaking ICP. That was 2 years ago and he's still running it.
If you do change it out, it's pretty straight forward. A crows foot wrench to get the old one out is handy. The new one is designed different so make sure you've got a deep socket large enough to put the new one in. Also, it's an o-ring seal. You don't have to tighten the snot out of it and risk breaking something. Just good and tight will do, or there is a torque spec for it I'm sure someone can provide if you want it.
Oil in the ICP plug is a sign there might be a problem. I've had oil in my ICP plug before and had no issues for 100,000 miles. I swapped it out to see if a new one made any difference, and it didn't. A local guy had ICP problems and I let him borrow my old, leaking ICP. That was 2 years ago and he's still running it.
If you do change it out, it's pretty straight forward. A crows foot wrench to get the old one out is handy. The new one is designed different so make sure you've got a deep socket large enough to put the new one in. Also, it's an o-ring seal. You don't have to tighten the snot out of it and risk breaking something. Just good and tight will do, or there is a torque spec for it I'm sure someone can provide if you want it.
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