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Message: [QUOTE="thatsmokinobs, post: 1147596, member: 18875"] i am writing this because for the last two winters, the ebpv (exhaust back-pressure valve) on my 7.3 has been the most annoying little sh!t in the world, and no matter where or how much i looked, i could find no solution. when the engine was warm, like in the summer or sometimes when plugged in, i would start my truck and about 2 seconds after that, the ebpv would kick on, making a very loud noise through my exhaust at idle, like someone was blowing pressurized air through it, then go away after 3-5 seconds. but when the temperature got below 40* or so, thats when it got annoying. i would start it, and this time, it would not make the noise at idle. i would turn my high idle on and afteer a second or so, the ebpv would close again, and since its basically an exhaust brake and it was at 1000 rpm, it made a helluva lotta noise through my 4" straight pipe. very annoying :cursing: sometime last winter i found that if i let it warm up for 10-15 minutes with the high idle on and the valve closed, then shut the engine off, and restarted it, the valve would operate like it did in the summer and come on for 2 seconds then turn off until the engine was cold again. so thats what i did the remainder of last winter and up until today. this thing has made me late to school, late to vo-tech, and almost late for work, and ive had enough of it. so last week i bought the exhaust back pressure sensor, figuring that the sensor could be giving a wrong reading and causing it, so i changed that today and i was going to take off the tube that it connects to and cleaning that out, but i didnt feel like fishing that thru the engine. just changing the sensor was a waste of $100, it did nothing. so i tried to shove some weedwhacker string thru the tube to clean it, but i would only go an inch or so. other than doing that, i couldnt figure out what to do, my dad was more lost than me, i searched everywhere, i asked everyone i knew too including my vo-tech teacher and some diesel mechanics and NOBODY had ever had experience with this issue. that is until i found a thread on here and in the thread somebody said to just unplug the solenoid for the ebpv. duh. :fustrate: im gonna try to find the thread again to give credit to the guy who said to do this. so, the easiest way to deal with this is to just find the connector and disconnect it. im not sure if they are all in the same spot or not, but either way, it should be the only wires running to the turbo. mine was on the drivers side, right under the intake tube, next to the strand of wires wrapped in red tape for the injector wiring harness. i have heard of some people taking the power wire from this and hooking it to a toggle switch to use as an exhaust brake and/or speed up warm up, but im lazy so i opted for the easy way. this takes not even a minute to do and its free so thats a win-win for me. if i remember, im gonna get some pictures tomorrow of where it is. i hope this helps somebody, but i bet i just confused you even more. [/QUOTE]