Exhaust sounds - Ford Powerstroke Diesel Forum
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Old 12-05-2010, 11:44 PM
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Exhaust sounds

96 f250 sounds like there is air blowing out of the exhaust pipe (whisting sound) It dosent do it at idle and at high rpm's (once turbo spools) the sound dosent stop at all untill i shut it off for a hour or so. Its infrequent very random. possibal turbo problem???
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Old 12-06-2010, 05:05 AM
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it is thte exhaust back pressure valve, it is right after the exhaust housing on the turbo and it closes when the engine is cold to warm it up faster. if it is staying on to long, the tube going to the exhaust back pressure sensor may be clogged with soot. It is near the passenger side exhaust manifold and goes up to the front of the motor and looks like a brake line. you can also simply unplug the valve under the compressor wheel of the turbo.
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