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 MANUALSCHEVROLET2004MONTE CARLO V6-3.8L VIN KREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSMANIFOLD PRESSURE/VACUUM SENSORSERVICE AND REPAIR
2004 Chevrolet Monte Carlo V6-3.8L VIN K
Manifold Pressure/Vacuum Sensor: Service and Repair
2004 Chevrolet Monte Carlo V6-3.8L VIN KSECTION Service and Repair
MANIFOLD ABSOLUTE PRESSURE (MAP) SENSOR REPLACEMENT
On the L36, the manifold absolute pressure (MAP) sensor is mounted to the positive crankcase ventilation (PCV) valve cover.
Removal Procedure
1. Remove the fuel injector sight shield.
2. Disconnect the MAP sensor electrical connector.
3. Carefully release the locking tabs holding the MAP (1) sensor to the PCV valve cover (2) just enough to remove the MAP sensor.
4. Pull the MAP sensor straight out of PCV valve cover.
Installation Procedure
1. Ensure that the seal is installed on the MAP sensor and that the seal is not damaged.
2. Position and install the MAP sensor (1) to the PCV valve cover (2). Ensure that the locking tabs engage to hold the MAP sensor to the PCV valve cover.
3. Connect the MAP sensor electrical connector.
4. Install the fuel injector sight shield.
On the L36, the manifold absolute pressure (MAP) sensor is mounted to the positive crankcase ventilation (PCV) valve cover.
Removal Procedure
1. Remove the fuel injector sight shield.
2. Disconnect the MAP sensor electrical connector.
3. Carefully release the locking tabs holding the MAP (1) sensor to the PCV valve cover (2) just enough to remove the MAP sensor.
4. Pull the MAP sensor straight out of PCV valve cover.
Installation Procedure
1. Ensure that the seal is installed on the MAP sensor and that the seal is not damaged.
2. Position and install the MAP sensor (1) to the PCV valve cover (2). Ensure that the locking tabs engage to hold the MAP sensor to the PCV valve cover.
3. Connect the MAP sensor electrical connector.
4. Install the fuel injector sight shield.
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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.