Question about 1997 Nissan Pickup

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No vacuum to egr valve

I have 1997 nissan pickup, 4cyl. 2.4 eng.(5speed mt) with a code P0400. replaced egr valve and cleaned old carbon from line & tubing. truck ran great for 1 day,no hesitation, then eng. light came back on, same code P0400 and now a little slugggish. now i've noticed that there is no vacuum in any lines to or from egr valve. have vacuum in other lines near tb just not egr. any thoughts...? thanks

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  • Anonymous Mar 16, 2014

    why does my 1992 gmc truck only idle when pcv vacuum line and egr vacuum line is off and if you put them back on the truck stalls?

  • Anonymous Mar 30, 2014

    where does my EGR valve lines hook too

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There is an EGR vacuum solenoid somwhere that controls on/off vacuum to actuate the valve. i am not to sure of the location, but follow the vacuum line back from the egr until you find a device that looks like an electrical check valve for vacuum. that is a possibilty. but then again i am a ford,chrysler guy and am just giving you an answer based on my understanding of the functuality of a vacuum egr system

Posted on Jan 15, 2009

  • Iona Axtell Sep 19, 2013

    thak you for your help have a good day.

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