240 L4-2127cc 2.1L SOHC B21F (1982)
Air Flow Meter/Sensor: Testing and Inspection
Mass Air Flow Sensor
[ With LH-1 Jetronic Injection ONLY ]
TECH TIP: A fast and easy way to check for a faulty air mass meter, (especially if the vehicle will not run) is to unplug the air mass meter harness
connector from the air mass meter. Try to start the car, if the vehicle runs, reattach the air mass meter harness connector to the air mass
meter. If the car dies as soon as you reattach the connector to the air mass meter, it is faulty. Try this several times to confirm.
*** UPDATED BY TSB #23120 DATED FEB. 1986
Before replacing an air mass meter, the following fault tracing should be performed. In most cases, the problem is related to wiring and connectors.
PREPARE FOR TESTING
1.
Disconnect the battery ground cable
2.
Remove right side kick panel
3.
Remove connector from the LH control unit (caution should be taken when removing and replacing the connector to prevent damaging the
connector housing, as well as the individual connectors).
Removing Protective Cover
4.
Remove connector cover
5.
Reinstall the connector to the LH control unit.
6.
Peel back rubber cover from air mass meter connector.
7.
Reconnect the battery.
