Fuel pump?
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Tuned
Joined: Jan 2006
Posts: 293
Likes: 1
Fuel pump?
I have a 2005 6.0, Excursion, totally stock, as far as I know, 240,000 miles. It starts and idles perfectly and pulls not too bad up to around 1750-2000 rpms. However, at these rpms and speeds above 55mph, and on hills, it acts as though it is starving for fuel. (missing, shuddering, etc). It also has a noticable miss when in park and rpms are above an idle. Any ideas? Could this be stiction, or is the fuel pump suspect? It acts the same hot or cold.
It had two codes, one for FICM and one for # 4 injector. I replaced FICM, cleared codes and none came back. No smoke to speak of, mileage is around 14 average.
It had two codes, one for FICM and one for # 4 injector. I replaced FICM, cleared codes and none came back. No smoke to speak of, mileage is around 14 average.
Fleet Owner
Joined: Nov 2003
Posts: 27,916
Likes: 3,636
Do you have a fuel pressure gauge?
When did you change fuel and oil filters last?
What kind of filters do you use?
Could you have some bad fuel?
It also sounds like it could be something in the high pressure oil system (leak, ICP, IPR, etc).
When did you change fuel and oil filters last?
What kind of filters do you use?
Could you have some bad fuel?
It also sounds like it could be something in the high pressure oil system (leak, ICP, IPR, etc).
Thread Starter
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Tuned
Joined: Jan 2006
Posts: 293
Likes: 1
I don't have a gauge. The filters (Ford) were changed about 5k ago. ts been like this since I bought it, (6 months) so I don't think fuel quality has much to do with it. But I do get my fuel at a truck stop. (SHELL)
Fleet Mechanic
Joined: Jun 2006
Posts: 1,589
Likes: 20
I have a 2005 6.0, Excursion, totally stock, as far as I know, 240,000 miles. It starts and idles perfectly and pulls not too bad up to around 1750-2000 rpms. However, at these rpms and speeds above 55mph, and on hills, it acts as though it is starving for fuel. (missing, shuddering, etc). It also has a noticable miss when in park and rpms are above an idle. Any ideas? Could this be stiction, or is the fuel pump suspect? It acts the same hot or cold.
It had two codes, one for FICM and one for # 4 injector. I replaced FICM, cleared codes and none came back. No smoke to speak of, mileage is around 14 average.
It had two codes, one for FICM and one for # 4 injector. I replaced FICM, cleared codes and none came back. No smoke to speak of, mileage is around 14 average.
Also, if you are not using a synthetic motor oil, I would suggest you do so.
DSMMH
Thread Starter
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Tuned
Joined: Jan 2006
Posts: 293
Likes: 1
Would a dying alternator cause these symptoms? I tested the voltage today at an idle. It read 12.5-12.7. I replaced the batteries and am going to replace the alternator early next week.
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Post Fiend
Joined: Oct 2009
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From: N. Fort Worth, tx
yes it will and that will also kill your new ficm.
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f250 6.0 powerstroke engine problem. ANY ADVICE!
Come home yesterday from trip up north. Truck has been running perfect for 130000. miles no problems. Stopped in SC to fill up, got back on 95 and about 1 mile truck lost power as if not getting any fuel. Truck did not shut off but would only get up to about 35 or 40 mph. Truck enventually shut down, but after 20 to 30 minutes truck restarted and performed the same. Evebtually got to an exit and pulled over and shut off again and not restarting. Truck will restart after a lot of trying but runs exremlly rough as if it has no fuel going to engine, shudders and sounds like it's skipping. No smoke at all.oil pressure is perfect oil level good, temp good, trans temp good, and no leaks found. Thought it was bad fuel but removed fuel and replaced and still does the same thing. ANYONE HAVE ANY ADVICE>
