240 L4-2320cc 2.3L SOHC VIN 83 B230FD (1993)
The ohmmeter should read 0 OHMS.
If this value is OK:
-Check the MAF sensor signal EJ9.
If the reading is incorrect:
-Check the wiring to the GND point for contact resistance in the intake manifold GND point.
EJ9
Checking The Mass Air Flow (MAF) Sensor Signal
-Clean the MAF sensor connector and treat it for corrosion.
-Install the connector.
-Start the engine.
LH 2.4: Connect a voltmeter between 3 (on the back of the MAF sensor connector) and GND.
The voltmeter should read approx. 2.3 V.
LH 3.1: Connect a voltmeter between 4 (on the back of the MAF sensor connector) and GND.
The voltmeter should read approx. 3.5 V.
If this value Is OK:
-Try using a new HO2S.
If the reading is incorrect:
-Replace the MAF sensor and repeat the readings.
