Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSACURA19983.5RL SPECIAL EDITIONREPAIR AND DIAGNOSISENGINE PERFORMANCEENGINE CONTROLS - ADJUSTMENTSIDLE SPEED & MIXTUREIDLE SPEED3.0CL
1998 Acura 3.5RL Special Edition
Idle Speed: 3.0CL
1998 Acura 3.5RL Special EditionSECTION 3.0CL
- Disconnect EVAP purge control solenoid valve 2-pin connector. DO NOT disconnect Idle Air Control (IAC) valve connector. Connect a tachometer. Start engine and run at 3000 RPM with no loads and transmission in Park or Neutral, until radiator fan comes on. Allow engine to idle.
- Check base idle speed. See IDLE SPEED SPECIFICATIONS . If necessary, turn idle adjusting screw to correct idle. Recheck idle speed after each 1/4-turn of idle adjusting screw.
- Turn blower motor switch to high and A/C on. Check load idle speed. See IDLE SPEED SPECIFICATIONS . If necessary, turn idle adjusting screw to correct idle. DO NOT turn idle adjusting screw when A/C is on. Recheck idle speed after each 1/4-turn of idle adjusting screw. If idle speed is not as specified, go to TESTS W/O CODES article. Connect EVAP purge control solenoid valve 2-pin connector.
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.