Can my wastegate be stuck? - Ford Powerstroke Diesel Forum
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Old 10-04-2010, 01:36 AM
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Can my wastegate be stuck?

Just recently i have had a strange noise, usually on start up or first few miles to work. It sounds like a jet taking off when there is no load on the engine.... just a loud ssssshhhhhhhh until i touch the throttle. i dont have my boost gauge yet so i cant tell if im building pressure. anyone have an idea?
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Old 10-04-2010, 02:01 AM
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LOL. Its not a problem really. That is called an EBPV (Exhaust Back Pressure Valve). It is tied in to your temp sensor. When the engine is cold ( I forget the setting) it closes off your exhast creating the sound you described and is in theory supposed to help warm the engine faster. The debate is out on weather it is effective really, I dont think it is enough to put up with it. I have done the EBPV mod that effectively turns it in to an Exhaust brake. Great mod in my opinion.
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Old 10-04-2010, 02:08 AM
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how do you do that?
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Old 10-04-2010, 02:22 AM
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I am looking for the link.
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Old 10-04-2010, 02:27 AM
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For some reason I cant find the link I am looking for but this should get you started.

My version of the Exhaust brake mod. - Ford Truck Enthusiasts Forums
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Old 10-04-2010, 03:11 AM
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i saw on a past post that you said this wont work on an automatic tranny, why is that?
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Old 10-04-2010, 04:25 AM
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It wont work because when you left off the gas the torque converter releases pressure so you have no direct link from the motor to the tires. In a manual you just leave the clutch engaged. Same principal as if you were downshifting using the engine to slow you down. In the automatic you need to build and install a torque converter lockup so it will stay engaged when you let off the gas.

http://www.dfuser.com%2finstall%2520...2006-3-30.pdf/
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