What is this sound with the turbo? - Ford Powerstroke Diesel Forum
 
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post #1 of 9 Old 02-13-2011, 07:07 PM Thread Starter
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What is this sound with the turbo?

It sounds normal before around 1600 rpms but then when i stop putting the pedal down and just keep a constant speed it starts to spin faster and hiss really loud. It doesnt sound like this is normal if i gas on it or let off the pedal it sounds like somthing closes and goes back to normal. Any possible ideas?
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post #2 of 9 Old 02-13-2011, 07:14 PM Thread Starter
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also have a video but cant figure out how to upload it hard to explain the sound... anybody know how to get the vid on here
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post #3 of 9 Old 02-13-2011, 07:22 PM Thread Starter
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post #4 of 9 Old 02-13-2011, 08:27 PM
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Winter Operation, Hard Starting, Hissing Sound Etc...



Winter Operation, Hard Starting, Hissing Sound Etc...

2000 Ford F350 XLT - Supercab Shortbox - twin stick
1988 GMC Sierra
1994 Ford Ranger
2006 KTM 525 EXC-R - steet legal supermoto/dirt bike
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post #5 of 9 Old 02-14-2011, 04:27 AM Thread Starter
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Doesnt do it until it gets warm though
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post #6 of 9 Old 02-14-2011, 05:02 AM
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Its your exaust back pressure valve opening and closing the same thing happened with my truck. its supposed to do it but if u wanna fix it unplug the sensor underneath the turbo.
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post #7 of 9 Old 02-14-2011, 05:07 AM Thread Starter
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Quote:
Originally Posted by powerstrokefan1 View Post
Its your exaust back pressure valve opening and closing the same thing happened with my truck. its supposed to do it but if u wanna fix it unplug the sensor underneath the turbo.
Thanks any negative things happen if I unplug it?
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post #8 of 9 Old 02-14-2011, 06:02 AM
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nope mines been unplugged for a year no codes to truble warming up i think the sensor is useless
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post #9 of 9 Old 02-14-2011, 08:16 AM Thread Starter
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thanks for the help
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