PO172 on a 98 Prelude SH

Discussion in 'Prelude' started by qslim, May 17, 2006.

  1. qslim

    qslim Guest

    My systems running rich, so says the computer. In observing the o2 sensor I
    found that voltage does indeed spike just as the engine returns to idle. At
    this point it hesitates and stumbles, barely running for a few seconds.
    After that, idle returns normally and sensor voltage occilates between .2
    & .8v like it should. Long term fuel trim is -%20%, short term -4% or so.
    I checked the map sensor and it is reading about 1.5 inHg off from my
    vacuum gauge, but I wouldn't think this small discrepency accounts for the
    condition.
    I haven't checked fuel pressure or the dampner yet, I'll do that
    tomorrow. I was just wondering if you brains with a lot of Honda
    experience have run into something like this before. Thanks.
     
    qslim, May 17, 2006
    #1
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