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2001 Chevrolet S10 Question: egr not working

 

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Visitor, 4.3L V6, Owens Cross Roads, AL, January 12, 2011, 11:47

my 01 s10 blazer has rough idle but i can unplug egr valve and it idles good ive already replaced egr but still has same problem what could it be?

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  • Answer #1

    mastertech6371 January 12, 2011, 12:23
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     Master

    usually the egr picks up carbon and the valve remains open causing a vaccuum leak that makes the idle very erratic.

    Roy

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    Visitor, January 29, 2011, 18:13

    i've already replaced egr and it still giving code egr closed performance, what could it be need help!!

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  • Medium-star Best Answer
    ZeeTech January 12, 2011, 12:53
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     Master

    I think Roy is correct. The valve might be open due to carbon deposit, ECM or wiring problem.
    There is a new style gasket developed with a fine screen which would stop the bigger pieces of carbon deposits to enter the valve.
    Faulty pintle position sensor could also keep the valve open.

    Zee

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    Visitor, January 29, 2011, 18:15

    already replaced egr and still giving code egr closed performance ,what could it be,please help!!

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    ZeeTech, January 29, 2011, 21:07
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     Master

    Faulty pintle position sensor in the new EGR valve could keep the valve open.

    Zee

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  • Answer #3

    candaautomotive from C and A Automotive, January 12, 2011, 14:07
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     Journeyman

    Check for vacuum leaks? This egr should be electronic. I would also check fuel pressure as well. Do you have any check engines lights on? If so, what are the codes?

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    Visitor, January 29, 2011, 18:17

    already replaced egr and still giving code egr closed performance, what could it be ,pleasae help!!

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