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 PERFORMANCEENGINE CONTROLS - ADJUSTMENTSIGNITION TIMINGCHECKING IGNITION TIMINGEXCEPT INTEGRA & 2.3CL
1998 Acura 3.5RL Special Edition
Except Integra & 2.3CL
1998 Acura 3.5RL Special EditionSECTION Except Integra & 2.3CL
- 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. Locate 2-pin service check connector (under glove box). Install Service Check Connector Tool (07PAZ-0010100 ), into service check connector. See Fig 1.
- On 2.5TL and 3.0CL, connect inductive timing light to No. 1 spark plug wire. On 3.2TL, connect timing light to service loop next to ignition coil No. 1 (White wire between ignition coil No. 1 and ignition control module). On 3.5RL, remove strut brace and engine cover. Connect inductive timing light to No. 1 spark plug wire.
- On all models, ensure idle speed is within specification. See IDLE SPEED under IDLE SPEED & MIXTURE. Red mark on crankshaft pulley should align with pointer on front of engine. See Fig 2. If timing is not as specified (Red mark and pointer are not aligned), replace ECM/PCM. Timing is not adjustable.
RENDER: 1.0x
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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.