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A rough idle in a 1992 Delta 88 Oldsmobile can be caused by several factors, including a dirty or failing idle air control valve, vacuum leaks in the intake system, or worn spark plugs and ignition components. Issues with the fuel system, such as a clogged fuel filter or failing fuel pump, can also contribute to poor idle quality. Additionally, problems with the engine's sensors, such as the mass airflow sensor or throttle position sensor, may disrupt proper air-fuel mixture and lead to rough idling. Regular maintenance and diagnostics can help identify and resolve these issues.

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4mo ago

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