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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

stranded help

   
Old Nov 19, 2014 | 10:21 AM
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stranded help
While driving lost boost, regained, lost boost a mile later, regained. Pulled into gas station no boost everything checks good on scan gauge except VGT is at 85%? Needle won't move off 0 boost. VGT solenoid?
 
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Old Nov 19, 2014 | 11:08 AM
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Possibly just remember the VGT may be commanded at 84% for some reason. Also keep in mind the oil to the turbo and vgt is from the low pressure pump.
Compare your VGT desired against the actual.
 
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Old Nov 19, 2014 | 11:09 AM
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or the unison ring is stuck not allowing the vanes to move
 
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Old Nov 19, 2014 | 11:42 AM
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My IPR and ICP read normal so I would think my oil pressure is good. Turbo was rebuilt about 60,000 back by ford house never had any issues till now.
 
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Old Nov 19, 2014 | 11:47 AM
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CAC tube off or a hose split?
 
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Old Nov 19, 2014 | 11:50 AM
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Exhast Back Pressure sensor? Try unplugging it and see if it builds boost again.
 
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Old Nov 19, 2014 | 11:54 AM
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Might check EBP. Stuck vanes/no boost EBP would be very low and build some with throttle. Die off hard when throttle cut.
 
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Old Nov 19, 2014 | 12:10 PM
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High humidity can be majot factor I have had turbos freese back up in less than a month.
Just saying.
 
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Old Nov 19, 2014 | 12:13 PM
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Will unplug ebp sensor. How long can I drive if that's the issue my truck is 7 miles from home.
 
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Old Nov 19, 2014 | 12:15 PM
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And when it died off almost felt like engine shut off but all rpms and other gauges maintained.
 
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Old Nov 19, 2014 | 12:15 PM
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Checked cac all looked good.
 
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Old Nov 19, 2014 | 01:29 PM
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If you think the turbo froze up I would pull the aircleaner tube and see if the turbo spins. As for 7 mile drive. It should make that with easy driving to get you home. The only failure would be if the turbo has mechanical failure that could run thru the engine.
Or are you saying it dies and won't run now?
 
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Old Nov 19, 2014 | 01:34 PM
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It will run just absolutely no turbo what so ever.
 
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Old Nov 19, 2014 | 01:42 PM
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Originally Posted by tim.moman
If you think the turbo froze up I would pull the aircleaner tube and see if the turbo spins. As for 7 mile drive. It should make that with easy driving to get you home. The only failure would be if the turbo has mechanical failure that could run thru the engine.
Or are you saying it dies and won't run now?
I was more referring to the unison ring freezeing back up. If the turbins are froze he has way more problems than just vgt.
 
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Old Nov 19, 2014 | 02:55 PM
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Checked MAP connections, hose and VGT. Unplugged EBP have turbo back. How long can I run without EBP?
 
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