Question about 1997 Isuzu Trooper

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Check engine light is on. Tried scanning and two codes appear. P041, and Emission Control System. A friend just did the scan again and got some message like 'purge valve...'. Would you have any clues as to which of the 'valves'is this one?

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  • Master
  • 870 Answers

Could be the (PCV) Purge Control Valve, and its located on your Valve cover with a hose going to the Intake manifold. Good luck

Posted on Jan 01, 2011

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  • 4 more comments 
  • joancome55 Jan 02, 2011

    Hi tgv1501 - would there be a way to check this valve through voltage (meter) before I go ahead and buy it? just a last minute thought. Plan to work on this tomorrow.
    regards

  • Clutch
    Clutch Jan 02, 2011

    Well there are some ways to test the PCV valve. and you can Remove the PCV valve from the valve cover with the hose still attached. Then place your finger over the open end of the hose. If the valve’s working well, you will feel strong suction. Try shaking the valve. If it’s unobstructed, it should rattle. If it’s fouled, the rattle will be indistinct or non-existent. Good luck

  • lilrobobx215 Jan 02, 2011

    doesn't PCV stand for Positive Crankcase Ventilation, and it is mechanical, meaning no wires...the code you are seeing should have 4 number digits and can be caused from a loose gas cap, if you just added fuel, try tightening your gas cap and clearing the code

  • lilrobobx215 Jan 02, 2011

    PCV will not throw a DTC code

  • Clutch
    Clutch Jan 02, 2011

    I'm sorry! I wanted to say PCV ( Positive Crankcase Ventilation) and the code you got is for the Purge control valve that has a relation to The Evaporative Emissions System that allows fumes from the gas tank to enter the engine to be burned, rather than vented into the atmosphere as a polluted emission.
    and the way to test this valve is to apply vacuum to the back end of the valve and see if the valve retains the vacuum.

    I'm sorry for the Mixing between the Valve, God this emission stuff drives you nuts.lol

  • joancome55 Jan 20, 2011

    Hi to all! I finally got the last word from the mechanic after he double checked the code reference. The code makes reference to a part called the 'purge'. Sorry I don't have its full description but in our search we can limit ourselves to the emission control system. I did a search some days ago and found one part called 'vapor canister purge solenoid. Wonder if the system has any other so called 'purge' part. Best regards

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