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Old 02-23-2014, 08:41 AM
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No Power, No Boost til High Rpm

My truck is a 2003 6.0, it has 38,000 on it. A few weeks ago it wouldn't build boost and had no power until I get over 2500rpm then it would build boost. I suspected it was a sticking turbo so I ran the heck out of it. The next day it ran ok, then a few days later it did the same thing. So I bought a new powermax and figured that would take care of it. I installed it yesterday and it didn't change anything. $1200 wasted! Today I checked my ICP and IPR on my scangauge

Start up ICP-840 IPR-38.5
High Idle 1200rpm ICP-630 IPR-27.8
Low Idle ICP-557 IPR-26.0

Took truck down the road at WOT ICP-2500 when I pulled in the driveway at idle ICP-440 IPR-21.1. I suspect I need a HPOP but not sure.dont want to throw any more money away. Any input would be appreciated.
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Old 03-07-2014, 11:02 AM
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I would like to know if you were able to fix this? My turbo is acting up and I'm afraid to buy a new one until I know it's the culprit. I had a shop clean it, so they say, and it helped but didn't fix it. I get virtually no boost until I dog it, hard! Then it will jump to 20 lbs. If I keep my foot in it, it will go from 20 lbs to 30 lbs for a split second then back to 5 lbs.

Just wondering if they cleaned the turbo at tall. Starting to think they just worked the actuator a bit and replaced the vgt sensor. I'm cleaning my old one tomorrow. Hoping to find some good news...
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Old 03-07-2014, 11:22 AM
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Try unplugging your EBP sensor. I unplugged mine and the truck ran great. I put the new sensor on and it's good as new.
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Old 03-07-2014, 11:34 AM
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Quote:
Originally Posted by Chatham View Post
I would like to know if you were able to fix this? My turbo is acting up and I'm afraid to buy a new one until I know it's the culprit. I had a shop clean it, so they say, and it helped but didn't fix it. I get virtually no boost until I dog it, hard! Then it will jump to 20 lbs. If I keep my foot in it, it will go from 20 lbs to 30 lbs for a split second then back to 5 lbs.

Just wondering if they cleaned the turbo at tall. Starting to think they just worked the actuator a bit and replaced the vgt sensor. I'm cleaning my old one tomorrow. Hoping to find some good news...
you can clean the EBP tube too.. a piece of wire works pretty well. they occasionally get plugged up with soot and stuff.
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Old 03-07-2014, 11:42 AM
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Will the truck run okay with the EBP sensor unplugged? Would this cause the turbo to have no boost unless you punch the pedal?

Thanks!
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Old 03-07-2014, 01:21 PM
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My truck ran fine with it unplugged, ran it a week until I got the new sensor.
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