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 MANUALSACURA2004TL AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMPGM-FI SYSTEMCMP SENSOR REPLACEMENT

2004 Acura TL Automatic

CMP Sensor Replacement

2004 Acura TL AutomaticSECTION CMP Sensor Replacement

Set the No. 1 piston at top dead center (see step 3 on VALVE CLEARANCE ADJUSTMENT ).
Remove the crankshaft pulley (see CRANKSHAFT PULLEY REMOVAL AND INSTALLATION ).
Remove the upper (see step 10 on TIMING BELT REMOVAL ) and lower (see step 11 on TIMING BELT REMOVAL ) front covers from the engine.
To hold the timing belt adjuster in its current position, thread in the battery clamp bolt hand-tight (see step 13 on TIMING BELT REMOVAL ).
Loosen the idler pulley bolt about five or six turns, then remove the timing belt from the front camshaft pulley (see step 16 on TIMING BELT INSTALLATION ).
Remove the front camshaft pulley (A).

Fig 1: Removing Front Camshaft Pulley
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Disconnect the CMP sensor 3P connector (B), then remove the back cover (C).
Remove the CMP sensor (A) from the back cover.

Fig 2: Removing CMP Sensor From Back Cover
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Install the sensor in the reverse order of removal, then install the timing belt (see TIMING BELT INSTALLATION ).
Do the CKP pattern clear/pattern learn procedure (see CRANK (CKP) PATTERN CLEAR/CRANK (CKP) PATTERN LEARN ).

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.