Hey what’s up guys!
Wanted to get some advice or knowledge regarding a problem I am having with my 06 Freightliner Columbia. I have a 60 series Detroit Engine 14L. I am loosing turbo boost intermittently at times, sometimes for a few hours or a few mins. As soon as I turn off the truck for 5 Mins and re start it. Turbo boost on. As of now I have changed VPOD, VPOD Air Line, VPOD Harness, Turbo Boost Sensor, Turbo with Actuator, CAC & Hoses & Boots. They did an EGR delete on truck before I bought it. Truck was running fine till a few weeks ago, it started derating. This is my second Columbia and always have had similar problems with them I get code SID 147 FMI 2 . Any advise will gladly be appreciated!!!
Intermittent Turbo Boost HEADACHE!!!
Discussion in 'Heavy Duty Diesel Truck Mechanics Forum' started by Felix773, Apr 16, 2021.
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How much boost do you normally have and how much do you have when you lose boost?
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To be honest, I haven't checked with gauge. Seems significantly less boost than I had a few months before. I would say 1/4 less than when it was running good. And then it just all of a sudden completely stops boosting. I am changing Delta Pressure Sensor now. See what it does. My gut feeling is telling me the EGR valve is to blame.
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Don't sound like its deleted right to me
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I have that thought as well, I took off the compression side hose/pipe coming out of turbo. I found small oil leak, would that be a definitive sign of bad Turbo? Not a lot of oil just a bit. Turbo shaft turns smooth and is firm in place. Would excessive crankshaft pressure cause any turbo problems? Also my coolant temp stays around 150ish and 170 with loads. Is this normal for temp to be running this low?
Last edited: Apr 18, 2021
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Any luck Felix with finding the issue. I’m having similar issues and haven’t replaced everything you have yet. I was getting intermittent turbo and was able to shut off and keep going but now that isn’t working. And also my stays below 170 as well unless I’m climbing hills for a prolonged time.
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DD15 EPA10 Engine Sensor Locations | DD15 Troubleshooting
Locate sensor number 15. Every Detroit has one. Sensor comes off with a small diameter allen wrench. then, take a clean microfiber towel and gently wipe it clean all around and try NOT to leave finger prints on it. Install it and see if your intermittent turbo continues. please let us know if it worked. -
Thank you I’ll research this
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