Low boost ? - Ford Powerstroke Diesel Forum
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Old 02-23-2013, 09:02 AM
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Low boost ?

My 05 6.0 has 60000 miles on it. It sits in the damp garage for weeks at a time. I have cleaned my turbo twice due to the excessive pitting on on both sides of unison ring(which I put a new one in on 2nd cleaning). Installed a new VGT solinoid, cleaned EBP sensor and tube, checked MAP sensor and tube for cracks, no exhaust leaks to be found. Still get 19 or 20 psi until shifting into 4th gear at WOT. I can get 27 on slow acceleration on interstate. Question is can a severely pitted turbo cause low boost.
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Old 03-07-2013, 05:50 PM
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My 06 kept going into the dealer with a code P0299 Turbo Underboost. They cleaned and replaced the turbo a couple of times. This last time they replaced the EBP sensor valve and so far it seems to be running normal.
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Old 02-11-2014, 07:25 PM
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BB Wolf did you ever find the problem.. Mine seems to have the same issues and can't figure it out
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Old 02-12-2014, 07:05 AM
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Change EBP sensor.
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Old 02-12-2014, 01:58 PM
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It can cause low boost. Try taking it out on the road and floor it. If it will accelerate slowly and shift up .... About third or fourth gear you may start building boost and have significant power return to the vehicle. It might not be full boost and power, but if it gets to about 18 or better and 60% power or better you can almost bet the vanes are stuck open. Whether it's the ring or solenoid Izard to tell at this point, but we can analyze from there if you get some boost.
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