Manifold Absolute Pressure (MAP) sensor — replacement
Non-6.0L models
Note: The MAP sensor is located on top of the intake manifold, on the left side behind the throttle body.
1. Disconnect the MAP sensor electrical connector (see illustration).
9.1 Disconnect the MAP sensor electrical connector and remove the bolt, then pull the sensor from the manifold (5.3L V8 shown)
2. Remove the MAP sensor mounting bolt and remove the MAP sensor by pulling it straight up out of the intake manifold.
3. Remove the old sealing grommet from the MAP sensor and inspect it. If the grommet is cracked, torn or otherwise deteriorated, replace it.
4. When installing the MAP sensor, use a little clean engine oil on the grommet so that it doesn’t tear when pushing the MAP sensor into its mounting hole.
5. Installation is otherwise the reverse of removal.
6.0L models
Note: The MAP sensor is located on top of the intake manifold, near the front.
6. Remove the intake manifold cover.
7. Disconnect the MAP sensor electrical connector.
8. Remove the MAP sensor retainer, then remove the sensor by pulling it straight up (see illustrations).
9.8a To detach the MAP sensor from the intake manifold on a V8 model, carefully pry each end of the retainer out and up and remove the retainer …
9.8b … then grasp the sensor firmly and pull it straight up and out of the manifold. Be sure to inspect the sensor grommet
9. Remove the old sealing grommet (see illustration 9.8b) from the MAP sensor and inspect it. If the grommet is cracked, torn or otherwise deteriorated, replace it. When installing the MAP sensor, use a little clean engine oil on the grommet so that it doesn’t tear when pushing the MAP sensor into its mounting hole.
10. When installing the retainer, make sure that it snaps into place. Installation is otherwise the reverse of removal.