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Junior Member
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128 Posts
Discussion Starter #1
Ok so when I start my truck in the morning when its cold after about a minute of running it will start to get really loud and make a noise like a vacuum cleaner...but once i hit either the gas pedal or the brake it will go back to normal idle what could this be
THANKS
 

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Senior Member
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6,337 Posts
It is the EBPV closing and the truck going into its cold weather programing.

Exhaust Back Pressure Valve is on the outlet of the turbo. It closes when the PCM tells it too and then the truck goes into a High Idle condition. It helps to warm the truck quicker.
 

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Junior Member
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128 Posts
Discussion Starter #4
hmmmmm exhaust brake eh? Got me thinkin
 

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MAFIA MEMBER 106
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2,262 Posts
red baron pm me if ya need info i make um but ill also tell you how to diy if ya want
steve
 

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Mod Friendly Title
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2,695 Posts
Or you can delete the sucker like I did... :peelout
 
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