GM 82-83 2.5L


82-83 2.5 L
13 Oxygen sensor circuit
14 Coolant temperature sensor voltage low
15 Coolant temperature sensor voltage high
21 TPS voltage was above 2.5 volts for 10 seconds when the MAP sensor signal showed manifold vacuum to be 15 pounds or more with an engine speed less than 1300 RPM.
22 TPS voltage was under 0.2 volts for 4 seconds when the engine was running.
24 Vehicle Speed sensor circuit
33 MAP sensor signal voltage was too high (low vacuum) for 5 seconds when throttle opening was under 2%.
42 The EST signal did not change when the ECM applied bypass voltage to the ignition module.
44 Oxygen sensor lean exhaust indication.
45 Oxygen sensor rich exhaust indication.
51 PROM not reading.
55 ECM problem