Quote:
Originally Posted by ronemus
You may have a sticky Idle Air Control valve. Try spraying some carb cleaner through it while the engine is running. For a long-term fix you might want to remove the IAC valve and "exercise" it after spraying the works with WD-40. Mine got sticky at around 60k miles but it's been working well for 17k miles since I treated it.
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DBW cars don't have IACVs, their idle is controlled by the throttle. The human isn't in control of the throttle, the computer is. Hence the need for tuning...