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my 90 lx taps at 6500

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    #1

    my 90 lx taps at 6500

    hey guys whats up?
    I have a 90 lx and about 6 months ago i did an h22a swap .... when putting in we hit hit the nock sensor on the fire wall we tryed to glue it back and.....OK now heres the prob.....1 the motor taps out at any where from 6500 to 6700 any no matter what i do it wont go past! what could this be??....the nock?? also i have the 1st gen apex vafc and have been told you can eliminate the nock with the vafc.....is this true?? if so whats the code??....please someone help!!!! i have tryed everything!! it getting real stressfull!!
    Honda Drive it like you stole it!!
    Tags: None
    #2
    is it tapping or knocking cause there is a difference.

    fixing the tapping could be as easy as a valve adjustment or could require new valve springs or could be due to lack of proper oil flow to the head.

    fixing the knocking could be done by adjusting the timing belt, adj. the distributor, and making sure your fuel pressure is good up to the injectors and verifying that all 4 injectors are firing properly, and also making sure the O2 is not bad or damaged.

    You could try using a new or at least not broken knock sensor. Also pull and CEL codes and see if you're getting anything other than the knock code.

    Using the VAFC to get rid of the knock is not encouraged because you should have it running good in factory form before changing the a/f ratio with the AFC. Otherwise you're asking for some serious problems down the road. Spend another couple hundred getting it straight now or spend a grand+++ on a new motor in the near future.....the choice is yours.

    My Accord History:
    91 EX 2dr : 91 EX 2dr : 91 LX 4dr : 93 EX 2dr : 86 LXi 2dr : 92 LX 4dr : 92 EX 4dr

    -Patrick

    Comment

      #3
      If something is broken, and you have a problem that may be related... fix what is broken. If the knock sensor detects knock of any type (it'll pick up detonation and rod knock, I believe), the ECU will do everything it can to keep your motor from blowing up.

      Does VTEC work? If not, you might be hearing some valvetrain noise simply because you're revving the non-VTEC cam lobes 1000rpm higher than they're supposed to go!






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        #4
        ok guys thanks for the help but maybe i didnt explain it to well......umm ok....at 6500 the motor cuts out like the rev limeter is kicking in....and the if i set vtec to 5000 or less it ticks in vtec...and i really dont feal vtec kick in any more....also the secondaries where taken out of the intake....will this hurt me??.....could this have a pice to the prob? thank you very much for your help!!
        Honda Drive it like you stole it!!

        Comment

          #5
          ecu working properly ?? any cel's ??


          Originally posted by Devergote
          A CB7 with an H22, a clean paintjob, HIDs with a projector retrofit, some nice wheels, and a mild drop on H&R Sport springs and Koni Yellow shocks... that's the perfect car. I'd be happy with that for the rest of my life.

          Comment

            #6
            i would make sure the ecu is good. It might be messed up and running in safe mode.

            Comment

              #7
              could this be caused by the water pump being out??....that it put the hole system in limp mode??
              Honda Drive it like you stole it!!

              Comment

                #8
                Originally posted by cb7accord_h22
                could this be caused by the water pump being out??....that it put the hole system in limp mode??
                no... if the water pump is out then it should run hot and from there on its a whole new ball game.


                Originally posted by Devergote
                A CB7 with an H22, a clean paintjob, HIDs with a projector retrofit, some nice wheels, and a mild drop on H&R Sport springs and Koni Yellow shocks... that's the perfect car. I'd be happy with that for the rest of my life.

                Comment

                  #9
                  well it only over heats if i go cruise for long period of time so i think its going out i just didnt know if that would put the ecu int limp mode......is there any real way to tell if it is just in safe mode??......and if it is how can you fix it??
                  Honda Drive it like you stole it!!

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