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.
2004 Acura TL AutomaticFACTORY OEM SERVICE PROCEDURE
Engine Electrical
ENGINE ELECTRICAL SPECIFICATION
| Item | Measurement | Qualification | Standard or New | Service Limit |
|---|---|---|---|---|
| Ignition coil | Rated voltage | 12 V | ||
| Firing order | 1-4-2-5-3-6 | |||
| Spark plug | Type | NGK:IZFR6K11 DENSO:SKJ20DR-M11 |
||
| Gap | 1.0-1.1 mm (0.039-0.043 in.) | 1.3 mm (0.051 in.) | ||
| Ignition timing | At idle Check the red mark | A/T (in N or P position) | 10 +/- 2° BTDC | |
| M/T (in neutral) | 10 +/- 2° BTDC | |||
| Drive belt | Tension | Autotensioner | ||
| Alternator | Output at 13.5 V and normal engine temperature | 130 A | ||
| Coil (rotor) resistance | At 68 °F (20 °C) | 2.5 kohm; | ||
| Slip ring O.D. | 14.4 mm (0.57 in.) | 14.0 mm (0.55 in.) | ||
| Brush length | 10.5 mm (0.41 in.) | 1.5 mm (0.06 in.) | ||
| Brush spring tension | 3.2 N (0.33 kgf, 0.73 lbf) | |||
| Starter | Output | 1.6 kW | ||
| Commutator mica depth | 0.4-0.5 mm (0.016-0.020 in.) | 0.15 mm (0.006 in.) | ||
| Commutator runout | 0.02 mm (0.001 in.) max. | 0.05 mm (0.002 in.) | ||
| Commutator O.D. | 28.0-28.1 mm (1.102-1.106 in.) | 27.5 mm (1.083 in.) | ||
| Brush length | 15.8-16.2 mm (0.62-0.64 in.) | 11.0 mm (0.43 in.) | ||
| Brush spring tension (new) | 15.7-17.7 N (1.60-1.80 kgf, 3.53-3.97 lbf) | |||
Factory Service Tools
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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.