6.0 poor acceleration/power. - PowerStrokeNation : Ford Powerstroke Diesel Forum
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post #1 of 59 (permalink) Old 04-04-2014, 09:27 PM Thread Starter
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6.0 poor acceleration/power.

I was hoping to find the answer to my issues in past threads but no luck. Heres the history. 2004 6.0 with 160,000. EGR cooler was pressure tested and found to be OK. I replaced the oil cooler, IPR and a ICP all about 6-8 months ago. EGR valve was replaced 4-5 months ago. Recently I experienced a slightly rough idle that was very intermittent. Slight rough idle is gone but the truck began to have poor top end acceleration on the highway. Since, this has progressed into poor acceleration all the time with some black smoke from the tail pipe. The only was to accelerate is to barley press the go pedal. Turbo spools and seems to sound ok. I replaced the EBP sensor with no change noted. Ford said FICM is reading 45v but i don't think that's my problem. I dont have a diag equipment or values for ya. HELP!
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post #2 of 59 (permalink) Old 04-04-2014, 09:38 PM
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Re: 6.0 poor acceleration/power.

Did you clean out the EBP tube?
Make sure your MAP sensor and tube are plugged in (pass side of intake manifold)
Those voltages for the FICM are a little on the low side. It shouldn't read below 46 volts. But as you said, I doubt the FICM is the problem.
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post #3 of 59 (permalink) Old 04-04-2014, 09:54 PM Thread Starter
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Re: 6.0 poor acceleration/power.

EBP tube is fine, will check MAP sensor and tube. I also plan on removing and cleaning the turbo. Will check the IPR valve only because i have easy access to it. Thanks for the quick reply.
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post #4 of 59 (permalink) Old 04-04-2014, 10:21 PM
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Re: 6.0 poor acceleration/power.

Sounds like a sticking turbo to me. Without damning some parameters it's hard to say.

My suggestion...if you ever have $300 to burn, invest in Auto Enginuity. Owning a 6.0 will pay for it in the long run being able to properly diagnose any problems. There are other scanning equipment out there...just never looked into them personally.

2005 F350 CCLB Dually
Studded, deleted
5" straight piped
155/30's
KC Stage 1.5
Reg return
Beans sump to the stock pump
BPD FICM
Tuned by several...depends on my mood for the day.
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post #5 of 59 (permalink) Old 04-04-2014, 11:25 PM Thread Starter
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Re: 6.0 poor acceleration/power.

Would you hear the turbo spool if it was sticking?
Next purchase will be scanner if I keep the truck. Wife says it has to go, lol!
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post #6 of 59 (permalink) Old 04-05-2014, 01:31 AM
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Re: 6.0 poor acceleration/power.

Yep. Im just giving out the cheaper of the fixes....
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post #7 of 59 (permalink) Old 04-05-2014, 03:03 AM
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Re: 6.0 poor acceleration/power.

had the same problem for the last 6 months could not find any thing wrong with till one day i was checking my trans fluid and heard a hissing sound like a small air leak turned out my boot had a split in it by the turbo bought a new boot bam all fixed
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post #8 of 59 (permalink) Old 04-05-2014, 03:44 AM
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Re: 6.0 poor acceleration/power.

Yea, that's another free thing to check. Cheak for leaks anywhere forced air goes. All 4 boots for your intercooler piping, uppipes off the manifolds (cold engine obviously). Those boots have a tendency to rot with the oil that's passed through the system.

2005 F350 CCLB Dually
Studded, deleted
5" straight piped
155/30's
KC Stage 1.5
Reg return
Beans sump to the stock pump
BPD FICM
Tuned by several...depends on my mood for the day.
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post #9 of 59 (permalink) Old 04-05-2014, 06:09 PM Thread Starter
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Re: 6.0 poor acceleration/power.

OK will do. Still Gonna pull the turbo on monday and clean it regardless if its the problem I will check for leaks or cracks. Thanks for the help. Borrowed a scanner from a buddy. I will post what i find on monday
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post #10 of 59 (permalink) Old 04-07-2014, 07:49 PM Thread Starter
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Re: 6.0 poor acceleration/power.

Found vgt solenoid pigtail needs replaced. 3 of the vgt vane tabs that seat into unison ring are worn down to nothing. I can't find vgt vanes anywhere for purchase. Any ideas? Also anybody have any idea of what sensor sits between the turbo oil supply line and oil filter housing?
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