High Idle? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 6 (permalink) Old 10-05-2009, 11:47 PM Thread Starter
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High Idle?

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

2001 F250, 7.3, Lariat, Crew Cab, Straight Pipe, 4X4... (140,000m)
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post #2 of 6 (permalink) Old 10-05-2009, 11:56 PM
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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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post #3 of 6 (permalink) Old 10-06-2009, 12:05 AM
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Just FYI, many people hook up a switch and use it as an exhaust brake.
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post #4 of 6 (permalink) Old 10-06-2009, 01:40 AM Thread Starter
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hmmmmm exhaust brake eh? Got me thinkin

2001 F250, 7.3, Lariat, Crew Cab, Straight Pipe, 4X4... (140,000m)
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post #5 of 6 (permalink) Old 10-06-2009, 08:24 PM
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red baron pm me if ya need info i make um but ill also tell you how to diy if ya want

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post #6 of 6 (permalink) Old 10-06-2009, 08:49 PM
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Or you can delete the sucker like I did...

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