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Can't get over 4000rpm !!!!!!!!!!!

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    #1

    Can't get over 4000rpm !!!!!!!!!!!

    Long story short. Killed my F20B block. Swapped F20B head onto H22JDM block. Am using EXACT setup as before (which ran great), yet after all is said and done speedometer is dead, and VTEC is impossible and it will not rev past 4000.

    Here's what I have determined:

    IACV-it's connected to VSS
    VSS- it's connected to speedometer and IACV-----Replaced
    ECU- Neptune P28 by Joe at LOCASH
    or my FAVORITE-----wiring harness

    Any help or suggestions will be greatly appreciated
    Tags: None
    #2
    check all your grounds, always the best place to start, especially with a honda!lol. check the one on the thermostat housing, and the one on the drivers side strut tower. let us know what you find out...good luck!
    if ur 555 then im 666

    Comment

      #3
      Originally posted by sensys01
      check all your grounds, always the best place to start, especially with a honda!lol. check the one on the thermostat housing, and the one on the drivers side strut tower. let us know what you find out...good luck!
      T stat ground wouldnt cause that if his car is starting. Are you throwing any CEL first of fall. Second i am pretty sure you know vtec wont engage without a signal from VSS.

      The New-ish Ride
      My old Ride
      Hear my Vtak!!!
      MK3 Member #3
      I piss off people for fun.
      IA 08 Sunburn Victim #1

      Comment

        #4
        Originally posted by NAiL05
        T stat ground wouldnt cause that if his car is starting. Are you throwing any CEL first of fall. Second i am pretty sure you know vtec wont engage without a signal from VSS.
        x's 2. v tec will not engage with speedo inop. If the pcm doesn't know how fast the vehicle is traveling, it will not engage v tech. I mean v tec. LOL j/k.
        The beginning of a new era............................
        165 hp 149 ft. lb. torque sohc non vtec. then....
        184 whp and 149 ft. lb. torque f20b stock now......

        Comment

          #5
          you should drive it off a cliff.

          Comment

            #6
            Originally posted by tuner2be
            you should drive it off a cliff.
            c'mon, don't be so mean.
            The beginning of a new era............................
            165 hp 149 ft. lb. torque sohc non vtec. then....
            184 whp and 149 ft. lb. torque f20b stock now......

            Comment

              #7
              I'd just make a switch for Vtec...build it into my Sport Shift button on my auto shifter.
              Also, shouldnt you just be able to cancel out individual warnings by feeding the computer the correct amount of voltage to each wire lead?
              Call me crazy but thats how it reads things....
              Like .5 volts on the MAF is running lean or something like that, I dont know all the voltages.
              Your man for wiring solutions!
              CB7Man's Coupe H22 Swap
              CB7Man's Sedan Resurrected From The Dead

              Comment

                #8
                Originally posted by CB7Man
                I'd just make a switch for Vtec...build it into my Sport Shift button on my auto shifter.
                Also, shouldnt you just be able to cancel out individual warnings by feeding the computer the correct amount of voltage to each wire lead?
                Call me crazy but thats how it reads things....
                Like .5 volts on the MAF is running lean or something like that, I dont know all the voltages.
                Whats the point of going through the hassle and doing that...If the sensor is broke just replace it. Sensors are constantly changing voltage. Plus most honda sensors are interchangeable.

                The New-ish Ride
                My old Ride
                Hear my Vtak!!!
                MK3 Member #3
                I piss off people for fun.
                IA 08 Sunburn Victim #1

                Comment

                  #9
                  we just put a new vss in tha thing

                  Comment

                    #10
                    yo really random but possibly relavent.

                    Buddy with an CD9 or whatever the next gen after Cb7 had an H22 with same prob. (Don't remember why) But it was litterally scraping the ground it was so low.

                    Dented oil pan.
                    word...

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