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P28 Ecu Issues

Discussion in 'ECU's, Electronics, and Tuning' started by Spyderturbo, May 11, 2003.

  1. Spyderturbo

    Spyderturbo Senior Member

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    Okay, I have a 1994 CX hatch with a 1993 D16Z6 motor swap done. I have a P28 ECU out of a 1994 EX auto. My buddy did the auto to manual conversion on it and it works great, except no vtec. I ran the two additional wires at the Ecu pinnouts for the solenoid and pressure switch. I'm gonna re-check them tomorrow again to make sure. Can anyone think of why the ECU would not engage vtec and not thro a CEL. That's right, no CEL but no Vtec, and it is a P28 for sure. If vtec is wired wrong won't it throw a CEL? This has me puzzled. Car runs great but no vtec

    -Matt
    1997 Spyder GST - sold!
    1994 Civic CX - D16Z6
    2000 Integra Type R - picking up May 15th!
     
  2. E_SolSi

    E_SolSi Member of the 20 nut club Moderator VIP

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    are you sure your not getting VTEC ... its really not that noticable on a SOHC
    ive had both
     
  3. Spyderturbo

    Spyderturbo Senior Member

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    There is no change in sound at all, when my girl had her EX I could at least hear a difference, I can't hear any difference at all with the hatch, and it has an intake and exhaust so I should hear something, plus I have not taken it past 6000 bacause I don't hear it engaging and it worries me.....

    -Matt
    2000 Integra Type R 0968
    1994 Civic Hatch-D16Z6
     
  4. pissedoffsol

    pissedoffsol RETIRED

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    there's 3 wires for vtec.... not 2

    A4 VTEC Spool Solenoid
    D6 VTEC Oil Pressure Switch Input
    VTEC Ground Black Chassis Ground


    make sure you are grounded
     
  5. Spyderturbo

    Spyderturbo Senior Member

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    The ground is in the harness and ties into another ground, I have a Z6 wiring harness so I should be covered with the ground, tomorrow the car may be sold I will have no worries hopefully!

    -Matt
    2000 ITR, PY, 0968, Tein HA's, AEM CAI
    1994 Civic CX, D16Z6, FOR SALE!

    1997 Eclipse Spyder,12's, SOLD!
     
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