Tools Required

J 23738-A  Hand Vacuum Pump. See Special Tools .

1. In order to view the operation of the auxiliary intake air door, remove the air cleaner cover and air cleaner element.
2. Observe that the auxiliary intake air door is OPEN.
3. If the intake air door is closed test for a faulty intake air control solenoid.
4. Disconnect the vacuum hose to the auxiliary intake air door motor.
5. Observe that the auxiliary intake air door is OPEN.
6. Replace the air cleaner assembly if the intake air door is closed. Refer to Air Cleaner Assembly Replacement .
7. Connect the J 23738-A  or an equivalent hand vacuum pump to the intake air door motor. See Special Tools .
8. Apply a vacuum of 34 kPa (254 mm Hg, 10 inches Hg) to the intake air door motor.
9. The intake air door motor should CLOSE and HOLD vacuum.
10. Replace the air cleaner assembly if the intake air door fails the above test. Refer to Air Cleaner Assembly Replacement .
11. Connect the J 23738-A  or an equivalent hand vacuum pump to the vacuum storage chamber on the air cleaner upper assembly. See Special Tools .
12. Apply a vacuum of 34 kPa (254 mm Hg, 10 inches Hg) to the storage chamber.
13. The vacuum chamber should HOLD the vacuum pressure.
14. Replace the air cleaner assembly if the vacuum storage chamber looses pressure. Refer to Air Cleaner Assembly Replacement .