Engine - Intake-Air System - 2.5L: Other Mazda Tribute II

INTAKE AIR DISTRIBUTION AND FILTERING - 2.5L

The air intake system consists of the

1. Air cleaner (ACL) pipe
2. Air cleaner element
3. Intake air resonator assembly
4. Mass air flow (MAF) sensor

The intake air system

1. cleans intake air with a replaceable, dry type ACL element
2. measures airflow and air temperature with the MAF sensor.

The engine ACL element is made of treated, pleated paper. A new ACL element must be installed periodically as scheduled. Engine performance and fuel economy are adversely affected when maximum restriction of the ACL element is reached.

Scheme 3

Scheme 4

Scheme 5

Scheme 6

1. With the vehicle in NEUTRAL, position it on a hoist. See «LIFTING»(ref-348626-S31954056142009112700000) .
2. Remove the fuel rail. See «FUEL RAIL REMOVAL/INSTALLATION - 2.5L»(ref-348657-S37888534662009112700000) .
3. Disconnect the vacuum supply hose. Depress the quick release locking ring. Pull the vacuum hose out of the quick release fitting.
4. Disconnect the fuel vapor return hose from the intake manifold.
5. Disconnect the Manifold Absolute Pressure (MAP) electrical connector.
6. Disconnect the Evaporative Emission (EVAP) canister purge valve electrical connector.
7. Disconnect the electronic throttle control electrical connector.
8. Disconnect the knock sensor (KS) electrical connector. Detach the wire harness pin-type retainer.
9. Detach the heater hose pin-type retainer.
10. Detach the all wiring harness pin-type retainer from the intake manifold and position the wiring harness aside.
11. Remove the intake manifold lower bolt. To install, tighten to 18 N.m {1.8 kg. m, 159 in. lb.}.
12. Remove the 6 bolts and position the intake manifold aside to access the crankcase vent oil separator tube and the EGR tube. To install, tighten to 18 N.m {1.8 kg. m, 159 in. lb.}.
13. Squeeze the 2 crankcase vent oil separator tube tabs and disconnect the tube from the intake manifold. Remove the EGR tube. Tighten to 55 N.m {5.6 kg. m, 41 ft. lb.}.
14. Remove the intake manifold and gaskets.
15. To install, reverse the removal procedure. Inspect and install new intake manifold gaskets if necessary.

Scheme 7

1. For additional information, see the procedures in this service information.