80 L4-1984cc 2.0L SOHC (3A) (1989)
^
start engine and observe U2 voltage
^
must fall within shaded area of graph
If the U2 voltage does NOT fall within the graph
^
the U2 reading is being influenced by another fault condition; possibly a vacuum leak that was overlooked
^
potentiometer/airflow sensor plate assembly is faulty
^
control unit or related wiring is faulty
If U2 adjustment NOT possible
^
replace airflow sensor plate/potentiometer assembly
CAUTION
Part numbers are for reference only. Always check with the parts department for the latest information.