Rough running 05
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Joined: Jul 2013
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Rough running 05
At 154k I'm on a third set of injectors. Most recent issue was loss of oil pressure. Mechanic replaced IPR, IPC, Stand pipes and a fitting on the HPOP(the cause of oil pressure loss). While he had it apart, also did an EGR delete.
Ran great for 4 days and then started noticing a bit of rough idle intermittently.
The problem has progressed. He rode w/ me with scan tool attached and only errors are mass airflow and non correlating intake air temp. The problem comes and goes, but seems to be worse when warm. Any thoughts would be appreciated!
Ran great for 4 days and then started noticing a bit of rough idle intermittently.
The problem has progressed. He rode w/ me with scan tool attached and only errors are mass airflow and non correlating intake air temp. The problem comes and goes, but seems to be worse when warm. Any thoughts would be appreciated!
Logistics Pro
Joined: Dec 2004
Posts: 4,138
Likes: 7
From: South Weber, Utah
3 sets of injectors is highly unusual, have you had the dynamic fuel pressure tested? Low fuel pressure is a leading cause of injector failure. It needs to stay above 45 PSI at WOT. I would have it checked if it hasn't been and do the fuel pressure regulator " blue spring upgrade ". It would also be a good idea to pull and check the IPR screen to make sure it didn't get stuff in it from the work that was done. Did he do the oil cooler as well when he did the EGR cooler delete? And did he leave the EGR valve in place and plugged in? The EGR valve needs to be plugged in for normal clutch fan operation and VGT control.
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I change fuel filters with every oil change now. Was originally told ( by a ford mechanic) that every 40 to 50k was sufficient . Did not find out otherwise until it was out of warranty.
IPR- 20-30%
ICP- good
FICM- 48volts
IPR- 20-30%
ICP- good
FICM- 48volts
Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
You unplugged the IPR and it ran? I would think it wouldn't crank without the IPR being plugged in. That's the one under the turbo. Did you mean the ICP, which is on the passenger valve cover??? Where in Arkansas are you located Jeff?
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Hotshot
Joined: Dec 2003
Posts: 15,368
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From: Stuttgart, Ar
How about the ICP pigtail??? It's not that common for the ICP sensor to take a dump, especially 4 days, unless it's just bad, and it should throw a code.
I would really like to see the codes too?
I would really like to see the codes too?
Elder User
Joined: Apr 2005
Posts: 907
Likes: 2
From: Jackson, TN
When the sensor is unplugged, the pcm goes to a default value for the ICP. An erratic signal will cause a rough idle or can cause a stall or no start.
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