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 DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCESYSTEMENGINE CONTROLS - TESTS W/O CODESSYMPTOMSCOLD FAST IDLE TOO LOW
1998 Acura 3.5RL Special Edition
Cold Fast Idle Too Low
1998 Acura 3.5RL Special EditionSECTION Cold Fast Idle Too Low
- Check Idle Air Control (IAC) valve. See DTC P1508 or P1519 in TESTS W/CODES articles below:
- For Integra, see TESTS W/CODES article.
- For 2.3CL, see TESTS W/CODES article.
- For 2.5CL, see TESTS W/CODES article.
- For 3.0CL, see TESTS W/CODES article.
- For 3.2TL, see TESTS W/CODES article.
- For 3.5RL, see TESTS W/CODES article.
- Check fast idle thermo valve. See VACUUM DIAGRAMS article.
- Check idle speed adjustment. See ADJUSTMENTS article.
- Check Intake Air Temperature (IAT) sensor. See DTC P0111, P0112 or P0113 in TESTS W/CODES articles below:
- For Integra, see TESTS W/CODES article.
- For 2.3CL, see TESTS W/CODES article.
- For 2.5CL, see TESTS W/CODES article.
- For 3.0CL, see TESTS W/CODES article.
- For 3.2TL, see TESTS W/CODES article.
- For 3.5RL, see TESTS W/CODES article.
- Check air cleaner.
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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.