S15/T15 Sonoma P/U 2WD V6-262 4.3L VIN Z TBI (1995)
Air Filter Element: Testing and Inspection
Air Cleaner Functional Check
Operation-Heated Air Intake
1. Remove air cleaner assembly and cool to below 4°C (40°F). The damper door should close to outside air (cold air).
2. Check the condition of air cleaner to throttle body gasket.
3. Reinstall air cleaner assembly and connect the heat stove tube at air cleaner snorkel and exhaust manifold.
4. Start the engine. As the air cleaner warms, the damper door should open slowly to outside air (cold air).
5. If the air cleaner fails to operate as described, check that the calibrated spring is properly installed and damper door is not binding.
6. If still inoperative after Step 5, replace wax pellet assembly and re-check wax pellet actuator R & R procedure. Refer to Wax Pellet.
