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vtec engages late

Discussion in 'Civic and CRX - EF' started by floyd447, Jul 16, 2008.

  1. floyd447

    floyd447 New Member

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    I have a 90 si hatchback with a b16a1 in it. The car runs strong, but vtec doesn't come on until about 6500 rpm. Is this a computer issue, or does any one have any suggestions for me to try?
     
  2. INJEN78

    INJEN78 HS LEGEND

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    sounds to me like a problem with the ecu...is it chipped???
     
  3. efhondakid

    efhondakid My name is Byron. VIP

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    Have you checked your oil? And how do you know its engaging late?
     
  4. floyd447

    floyd447 New Member

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    I don't think that it is chipped, because I don't see any benefit to raising the vtec change over and the rev limiter is only at 8200. It has always changed over late even right after oil changes and I check the oil often, so I don't think that oil level is the cause.
     
  5. INJEN78

    INJEN78 HS LEGEND

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    maybe try a new solenoid??or a differant ecu
     
  6. Luis998

    Luis998 Honda Enthusiast

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    What ECU are you running?
     
  7. Individua

    Individua New Member

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    quick ?

    Quick question? Sorry dont meen to get off topic but why is your rev limiter at 82?
    My redline begins at 8 and it wont really even bounce off the needle? Im new to the whole honda thing
     
  8. INJEN78

    INJEN78 HS LEGEND

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    revlimiter is set to 8200 stock
     
  9. Justin66

    Justin66 The Hondaswap Canadian

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    Mine limits at close to 8500. Check your VTEC filter and gasket, worth a try.
     
  10. floyd447

    floyd447 New Member

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    It's the pr3 ecu and I'm not sure if the rev limit is exactly at 8200 its just around there, and I have heard many places that that is where the stock limit should be. But one of my old cars had a pr3 ecu in it that i could run the needle all the way down to the end of the tach which I would assume is about 8600 or so and that ecu was stock to the best of my knowledge.
     
  11. floyd447

    floyd447 New Member

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    Could it possibly have anything to do with my car having an obd1 distrubitor?
     
  12. carlo

    carlo jdm spec

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    have you try a difrent one i dont think the distrubitor is gona afect the vtec check your conections in the selenoide and oil pressure
     
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