High Idle

Discussion in 'General Super Duty Discussion' started by dieseldork, Jan 24, 2007.

  1. dieseldork

    dieseldork dieseldork

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    Its been a while since I have been on the sight, But I have a question for the GURUS..... When its cold out and the truck idles for a while, the idle kicksup on the truck?........ when I jump back in and tap the brakes it will return to a normal idle ..... What gives?... Is this normal and what is the reason?
    It will also kick back on if I continue to let her idle. It only does it when its in the 30s, or lower.
     
  2. fgtex

    fgtex Full Access Member

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    It is normal for these trucks to do. It is a built in high idle to help the engine warm up when it air temp is cold.
     
  3. dieseldork

    dieseldork dieseldork

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    Thanks FGTEX, I havent had the truck through a winter yet so This was a new one for me....
     
  4. fgtex

    fgtex Full Access Member

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    The EBPV closes to help the vehicle warm up also. Go stand by the exhaust while it is on high idle and the EBPV closed...it sounds pretty cool.
     
  5. melmount

    melmount Full Access Member

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    whats the ebpv valve?
     
  6. 00F250

    00F250 SDD Junior Member

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    EBPV - Exhaust Back-Pressure Valve
     
  7. Yellowsub1962

    Yellowsub1962 supernewbie

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    I've also read lots of places that the high idle keeps the cylenders frow washing out as well?
     
  8. DaveBen

    DaveBen SDD Senior Member

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    I think you mean "cylinders".

    Dave :D
     
  9. powerstrokeguy

    powerstrokeguy Full Access Member

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    yep i heard that too. yeh its just a warming device. they all do it in cold temps.
     
  10. bushpilot

    bushpilot Full Access Member

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    Im not sure i agree w/ the "warming" device...its more of a wet stacking
    issue i think.

    My experiance is that no matter HOW warm the truck, if the out side
    air is below some temp. (40* or so...) the idle will kick up automatically...
    and it doesnt matter if you just started the truck or youve stopped
    and are "idling" (having just run the truck).

    so i tont thing kits a "warmth" (of the engine) issue...its more of
    an outside air temp issue
     

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