Vgt duty cycle messed up/ no whistle. HELP!!! - Ford Powerstroke Diesel Forum
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Old 08-15-2013, 07:21 AM
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Vgt duty cycle messed up/ no whistle. HELP!!!

Ok so I have a 05 6.0. My vgt duty cycle is at 45.0% at idle and drops to about 24% wot. I have an exhaust back pressure circuit low and circuit high codes. So I replaces that with no change. Next I changed the map sensor because these 2 sensors tell the computer the vein position (thought mabe that would help). Still no change. Cleans the unison ring and veins last night, put a new vgt solenoid in and also the plug. No change. Wtf. I have a powermax in this and only pushing 28psi with a 100 horse tune in the edge. Does anyone have ideas.
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Old 09-21-2013, 08:08 AM
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I have the same problem...you figure out what it was?
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