High idle fixed

  • Hi all, I had what seems to be a common problem, high idle when the engine is hot, and a slight hesitation when accelerating. After cleaning the throttle body, IAC valve and resetting the TPS, the issue remained.

    In my case it turned out to be the rubber grommet that the PVC valve pushes into was deteriorated, a vacuum leak . After replacing the grommet (£3.41 plus VAT from the local Mazda dealer) and resetting the idle, following the procedure ( hot engine, shorting TEN to ground in the diagnostic port). The idle is now correct stable.

    The car drives better than its done for ages.

    I hope this is useful information.

  • Thanks for that, could be useful to a few, which engine has your car got?


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