turbo issue
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New User
Joined: Feb 2016
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turbo issue
Hey everybody, new member to the website but have always come here to find useful answers. I've noticed a power loss on my 04 6.0 for about a week now. I've drove it everday since first noticing, it starts great even with freezing temps here MI. Using a sct x4 powerflash for monitoring i check for codes, none thrown. All gauged data shows nothing abnormal besides turbo boost, reading at .1 to .5 psi in park. Being new to the 6.0 i started with checking all connections to and from turbo, everythings snug. Than moved to the EBPV and tube, cleaned both, now the boost bounces between .3 and -.3 in park. While driving i'm starting to get intermittent boost loss completely, than boosts kicks in and drives normal. Which leads me to my question, am i expierencing sticky vanes? Or could the vgt solenoid be doing this.
More Turbo
Joined: Feb 2005
Posts: 574
Likes: 3
From: Grand Rapids,MI
turbo unisom ring could be sticking, is it a every day driver, if it sits for long periods of time the unisom ring will stick to the center section, a good cleaning and some copper anti size and it will be fine
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New User
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Yes it is a daily driver, but it did sit for about 2 weeks due to trans work. Symptoms started shortly after. So turbo's coming off, figured i'd ask before getting into that fun. Thank you!
Freshman User
Joined: Sep 2005
Posts: 45
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From: Columbia River Gorge, OR
Here's an article about servicing the turbo: Fixing Ford Turbo Troubles Early: Diesel Power Engine
I had this shop "refresh" my turbo last fall while on a trip and it solved the classic 6.0 sticking vanes problem.
I had this shop "refresh" my turbo last fall while on a trip and it solved the classic 6.0 sticking vanes problem.
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New User
Joined: Feb 2016
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Here's an article about servicing the turbo: Fixing Ford Turbo Troubles Early: Diesel Power Engine
I had this shop "refresh" my turbo last fall while on a trip and it solved the classic 6.0 sticking vanes problem.
I had this shop "refresh" my turbo last fall while on a trip and it solved the classic 6.0 sticking vanes problem.
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The only issue with the x4 sct monitor is it doesnt read map right so i cant read the differences. Could be a faulty ebp sensor. Its cheap, worth a shot
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Laughing Gas
Joined: Oct 2012
Posts: 794
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From: Ontario
Is the map on the SCT double the other values at KOEO? That's normal. It's reading in a different value. Just cut it in half. KOEO map,baro,ebp should be same. When my EBP fails the truck runs high boost, not over boost though. But can easily sweep 1-25psi on moderate acell and will cruise at 20psi if you don't feather the pedal to make it come down. With ebp in you won't see more than 20-22 from a stop. Surging/sticking could be a bad vgt solenoid or vanes/unison ring. I wonder if unplugging the vgt while running, would help diagnose a bad vgt? If the surge goes away
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New User
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Is the map on the SCT double the other values at KOEO? That's normal. It's reading in a different value. Just cut it in half. KOEO map,baro,ebp should be same. When my EBP fails the truck runs high boost, not over boost though. But can easily sweep 1-25psi on moderate acell and will cruise at 20psi if you don't feather the pedal to make it come down. With ebp in you won't see more than 20-22 from a stop. Surging/sticking could be a bad vgt solenoid or vanes/unison ring. I wonder if unplugging the vgt while running, would help diagnose a bad vgt? If the surge goes away
Laughing Gas
Joined: Oct 2012
Posts: 794
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From: Ontario
Did not know that good to know! My driving symptoms seem opposite. At idle im holding .5 maybe. Acceleration is slow, reachin max 24psi. But at cruizing speed say (50mph) you can watch boost go to 0 back to 5-7 back to 0. Id have to look into unplugging VGT, not sure about that
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New User
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started it with sensor plugged in. When high idle kicks in theres a hesitation on initial spool and whines pretty loud for a few seconds, than smoothes out. does this scream ebp? Unplugging sensor next
Laughing Gas
Joined: Oct 2012
Posts: 794
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From: Ontario
You should hear turbo before high idle. But more pronounced during. Unplug the EBP sensor and check, you will be safe to take it for a drive to report your findings as the truck will run on a default reading. With EBP unplugged you will not hear turbo at idle, but if your surge disappears I would suspect bad VGT
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New User
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You should hear turbo before high idle. But more pronounced during. Unplug the EBP sensor and check, you will be safe to take it for a drive to report your findings as the truck will run on a default reading. With EBP unplugged you will not hear turbo at idle, but if your surge disappears I would suspect bad VGT
Laughing Gas
Joined: Oct 2012
Posts: 794
Likes: 1
From: Ontario
Low speeds? It will shift if moving onto a highway. Have you looked into a VGT re learn? It may be smoother because its warming up. I still believe it's a VGT issue. You said your EBP/MAP/BARO numbers were okay right? That's why I'm away from an EBP issue. Next you would want to monitor your VGT% when idle/1800rpm and WOT. As long as VGT% is moving, and not holding, it's usually fine. Do this with EBP plugged back in. If a relearn doesn't help or VGT% doesn't show anything..... The turbo itself could need cleaned
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Low speeds? It will shift if moving onto a highway. Have you looked into a VGT re learn? It may be smoother because its warming up. I still believe it's a VGT issue. You said your EBP/MAP/BARO numbers were okay right? That's why I'm away from an EBP issue. Next you would want to monitor your VGT% when idle/1800rpm and WOT. As long as VGT% is moving, and not holding, it's usually fine. Do this with EBP plugged back in. If a relearn doesn't help or VGT% doesn't show anything..... The turbo itself could need cleaned
And i dont have knowledge about vgt relearn but will look.
Going back to the ebp sensor unplugged. I couldnt get the vehicle over 10 mph. Thought i was going to blow it up. Maybe ebpv on pedestal is stuck?