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So two days ago I was on the last hour of an 8 hour drive and I was pulling a slight grade on I-15 with no trailer or load. The cruise is on and all the sudden I completely lose engine power. Everything is still on and the engine is running but I've got less than half the power. I pull off the side and get out and listen and look but everything sounds fine. So I try to pull back on and the engine sounds like a 7.3, you know like a real diesel, and my boost gauge is not going over 5 psi. So I get off at the next exit and shut her down for a minute and start back up and everything is normal. Does this sound like the wastegate was being held open? Reduced boost and louder exhaust on acceleration. Has anyone else experienced this? I've got 25,000 miles and have had zero problems thus far.
 
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