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Rough Idle issue?

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    #1

    Rough Idle issue?

    My car was running fine today, then all of a sudden when I came to a stoplight it idled like shit. Sounded like it was missing.

    I pulled over to see that my cheapo short ram intake had came apart and the motor was drawing in raw unfiltered air. I got it home and reassembled it.

    But for some reason, it still runs like Crap. I check tightened the idle screw and that fixed it (sorta) until I closed the hood and it started running shitty and then started reving between 1k and 2.5k back and forth.

    I checked spark plugs and the #3 cylinder spark plug boot was loose and wouldnt seat on the spark plug well. I took pliers and squeezed the metal piece inside the plug boot, it seated a little better. When the car was running I noticed a pulse when I put my finger on top of the boot.

    Any idea what wrong here? What can I still check? It runs fine at speed, crappy at idle.

    BTW I have a 91 ex with a f22a1 and an auto tranny.
    PSN
    Vash744

    MRT 1992 EX Coupe "The Jerk"
    2009 Subaru Impreza 2.5i Premium Hatchback
    2008 Honda Fit Sport (Totaled out - Death by fallen tree)
    1993 CB7 Sedan LX (Totaled out)
    1991 CB7 Sedan EX (Dead and Junked)
    Tags: None
    #2
    I recommend start by checking to see if each cylinder is firing properly.A easy way to do this is put on a glove and start the car. While the car is idling, Grab each spark plug boot one at time and slip off and put back on one at a time. As you slip each one off, the motor should miss more. If it does not miss more, that is at least telling you which cylinder is causing the problem. Hope this helps. Good luck.


    http://www.cb7tuner.com/vbb/showthread.php?t=178069

    Comment

      #3
      The idling up and down sounds like the IACV.The miss could be manythings plugs,wires,injector,problem in distributor,compression loss etc etc and so forth.First off do you have any cels on(check engine light)?

      02 Crv
      02 silverado Ex cab Z71, 2011 TRD 17" wheels, 245/80/17, ls1 cam, AFE intake, 3" catback, tuned by Larry at LSXperformance&pcm tuning driven daily.
      92 Acura Legend colbalt blue LS Coupe, custom intake, custom vibrant 2.5 cat back, led cluster and high beams, 2016 Coyote GT 18x8 wheels 235/40/18.
      Coming Soon Tein TSX coilovers.

      Comment

        #4
        Originally posted by alan lx View Post
        I recommend start by checking to see if each cylinder is firing properly.A easy way to do this is put on a glove and start the car. While the car is idling, Grab each spark plug boot one at time and slip off and put back on one at a time. As you slip each one off, the motor should miss more. If it does not miss more, that is at least telling you which cylinder is causing the problem. Hope this helps. Good luck.
        I will try this today. I have a feeling its that plug I talked about earlier. I think I have lifetime warranty on the plug wires. So ill go get another set.
        PSN
        Vash744

        MRT 1992 EX Coupe "The Jerk"
        2009 Subaru Impreza 2.5i Premium Hatchback
        2008 Honda Fit Sport (Totaled out - Death by fallen tree)
        1993 CB7 Sedan LX (Totaled out)
        1991 CB7 Sedan EX (Dead and Junked)

        Comment

          #5
          Car died and wouldnt start. After many many hours, I got it running. The coil went bad in the distributor. It still miss fires on the number 4 cylinder now, so Im going to limp it to the dealership is marysville.
          PSN
          Vash744

          MRT 1992 EX Coupe "The Jerk"
          2009 Subaru Impreza 2.5i Premium Hatchback
          2008 Honda Fit Sport (Totaled out - Death by fallen tree)
          1993 CB7 Sedan LX (Totaled out)
          1991 CB7 Sedan EX (Dead and Junked)

          Comment

            #6
            what was the verdict?

            Comment

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