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    mht123 Posts: 1, Reputation: 1
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    May 24, 2010, 03:38 PM
    Previa knock sensor drop engine 97 Previa AWD LE/SC
    Hi: I have a 97 Toyota Previa -AWD- LE/SC with 193,000 miles. LOVE the Car.

    ** Previa began to run rough in the morning and cold starts. (also, gas mileage dropped from 20 to 14mpg (-thought it might be worsened by new tires).
    ** Over next week’s it became progressively worse.
    ** Had a complete tune up, Fuel filter replaced, transmission flush (while it was in shop).
    ** Ran well for 10 days…than Catalytic Converter Clanged allot and car started to sputter Badly at acceleration.
    ** Brought it back to the shop and he replaced Catalytic converter and replaced faulty spark plug
    ** Car ran better, but still no acceleration, and not power – shop could not fix it
    ** Had it towed to dealer. They say it’s the nock sensor and necessitates lowering engine and tranny to repair… near $1800

    ?? Do You Need to Drop the engine to replace the Knock sensor? Fair Market Cost for the replacement and labor costs? Thoughts? Call: (seven 0 three -527-5660) Thanks

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