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Fluctuating Idle Speed

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Old 09-26-02, 12:40 PM
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Sea2river
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Default Fluctuating Idle Speed
For quite some time, my 92 ES300 idle speed has been fluctuating. It will idle at 1200 RPM, then drop to 600 for 30 seconds then surge back up to 1200. It is not linked to air conditioner use since it occurs with the A/C off or on. Other than the fluctuation, engine runs smoothly. Any ideas?
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Old 09-26-02, 02:19 PM
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muldrick
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Do a throttle body cleaning, which'll most likely fix it.
let me know
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Old 09-27-02, 08:58 AM
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black sc
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Put a new throttle body gasket also and tighten to spec when done.
Last edited by black sc; 09-27-02 at 08:59 AM.
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