S15/T15 Jimmy 2WD V6-262 4.3L VIN Z (1994)
Thermostatic Air Cleaner: Testing and Inspection
Results of Incorrect Operation
Hesitation during warm up can be caused by:
-
Heat stove tube disconnected.
-
Missing or damaged air cleaner to TBI gasket.
-
Loose air cleaner cover and air cleaner.
-
Missing air cleaner cover seal.
-
Stuck open damper door.
Lack of power, sluggish, pinging or spongy, on a hot engine check for:
-
Stuck closed damper door.
Air Cleaner Functional Check
-
Remove air cleaner assembly and cool to below 4°C (40°F). The damper should be closed to outside air (cold air).
-
Check condition of air cleaner to throttle body gasket.
-
Reinstall air cleaner and connect heat stove tube at air cleaner snorkel and exhaust manifold.
-
Start engine. Watch damper door in air cleaner snorkel. As air cleaner warms up, damper door should open slowly to outside air (cold air).
-
If air cleaner fails to operate as described, be sure calibrated spring is properly installed and damper door is not binding.
-
If still inoperative after last step, replace wax pellet actuator assembly and recheck
