2009 Corolla erratic idle I have a 2009 corolla that has been having a throttle dead spot at very light throttle for some time. You can see the rpm vary about 200 I cleaned the throttle body to try to correct this. When I did it got worse. It now idles erratic from 950 (lowest) to 1800 rpm. It shows in the cruise control now too.

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16 Jan, 2018

  • 63%
    Solved this issue
  • 112min
    Time to fix
  • 64%
    Recommend to DIY
Need a faster answer?
research the resitance values values of the throttle position sensor. it is factory adjusted. look up procedures on how to replace a throttle position sensor and how and what to adjust.
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