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How does the ECU know the air pump is working?

Discussion in '348/355' started by hacker-pschorr, Apr 10, 2009.

  1. hacker-pschorr

    hacker-pschorr Formula Junior
    Rossa Subscribed

    Sep 27, 2006
    582
    Land of Lambeau
    #1 hacker-pschorr, Apr 10, 2009
    Last edited by a moderator: Sep 7, 2017
    Is it simply looking for the resistance when power is applied to the pump?

    I doubt its exhaust readings since the pump is only activated while the O2's are warming up.

    Yes I'm thinking about removing the air pump system on a 5.2 355. I'm sending in the headers to have them coated inside and out by Swain Tech. If I decide to dump the air injection system, the ports will be cut off and welded shut on the manifolds.
    The CATS are also coming off.

    Daniel @ Ricambi posted this from the WSM in a different thread:
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  3. eric355

    eric355 Formula Junior
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    Nov 30, 2005
    984
    Toulouse (France)
    Full Name:
    Eric DECOUX
    From what I have experienced, the ECU knows if the relay commanding the pump and the valve is there. I don't think it has any mean to know if the pump is working and the valve open.
    I think you can remove the pump and plumbing but keep the relay in place.
     
  4. Llenroc

    Llenroc F1 Rookie
    Rossa Subscribed Consultant

    Jun 9, 2004
    3,343
    Colorado
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    Vern
    Eric you are correct. My 2.7 355CH has no air pump or plumbing but the wiring, valves near the pass. ECU and relay are in place. If you pull the relay 1-4 CEL comes on.
     
  5. hacker-pschorr

    hacker-pschorr Formula Junior
    Rossa Subscribed

    Sep 27, 2006
    582
    Land of Lambeau
    This is excellent news - thanks guys!!!

    One possible area for the headers to fail removed :)
     

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