Slow Pickup

Discussion in 'General Motoring' started by hyundaiuser, May 17, 2006.

  1. hyundaiuser

    hyundaiuser Guest

    We have a 99 Sonata V6 ...from a couple of days the pickup has been
    really slow...on the freeway it drive just fine.
    I would appreciate any inputs you may have..

    hyundaiuser, May 17, 2006
  2. hyundaiuser

    hyundaiuser Guest

    The mechanic suggested change of oxygen sensors and catalytic converter
    and is charging $1300. Does this sound alright?

    hyundaiuser, May 18, 2006
  3. Wrong guy to ask, but does $1300 sound right?? No.

    Bluntly, change the oxygen sensors yourself, and get an evaluation from an
    exhaust specialist, getting them to do the work if necessary on the
    catalytic converter.

    In my world, $500 should do it, but maybe I'm off.

    Tom Wenndt
    Rev. Tom Wenndt, May 18, 2006
  4. hyundaiuser

    hyundaitech Guest

    This sounds alright only in the event it's correct. I believe there are
    three catalytic converters on this car. Why does the mechanic want to
    replace those items? Was the check engine lamp on? If so, what were the
    trouble codes? Which of the three converters will he be replacing?

    My gut instinct says this won't fix your car. Why? Because the oxygen
    sensor doesn't tend to affect acceleration on this model when it fails.
    (This doesn't mean it can't do it-- I've seen it happen, but it's very,
    very rare.) As for the catalytic converter, if it were clogged, it would
    be likely to be *more* of a problem during freeway driving. When a
    catalytic converter is clogged, it restricts exhaust flow, making high rpm
    performace drop, and in more severe cases, makes it impossible to reach
    high rpm or to even start the engine.
    hyundaitech, May 18, 2006
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