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  1. Join Date
    Apr 2012
    Posts
    2
    #1
    Hi, I have a Honda Civic 99.
    help naman po, bumababa kasi yung RPM nya after mag rev
    ito po yung sample video nya.

    https://www.youtube.com/watch?v=l0dn...ature=youtu.be

    Already did the following:
    *replaced the IACV
    *replaced the spark plugs
    *cleaned the throttle body
    *tuned up the engine
    *changed the oil

  2. Join Date
    Feb 2009
    Posts
    5,130
    #2
    Check your throttle position sensor. The episode on your video clip is too short but it seems to be hunting, a symptom caused by a bad TPS

  3. Join Date
    Apr 2012
    Posts
    2
    #3
    Quote Originally Posted by jick.cejoco View Post
    Check your throttle position sensor. The episode on your video clip is too short but it seems to be hunting, a symptom caused by a bad TPS
    hi, ano po ang gagawin ko sa tps? posible kaya na ito din ang reason kung bakit medyo matakaw sa gas itong oto ko? salamat!

  4. Join Date
    Feb 2009
    Posts
    5,130
    #4
    Quote Originally Posted by reynan29 View Post
    hi, ano po ang gagawin ko sa tps? posible kaya na ito din ang reason kung bakit medyo matakaw sa gas itong oto ko? salamat!
    The best test is using a DSO (digital storage oscilloscope) connected to the signal wire and ground. Make a sweep from closed throttle to WOT (wide open throttle). If glitches show on the waveform, the TPS is bad

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RPM dipping after revving the engine