|92 2.3L VIN A MFI
||Oxygen sensor voltage stays between 0.35 and 0.55 volts for 30 seconds
after engine had been running for at least 40 seconds.
||Coolant temperature sensor signal indicates a temperature of over 285°
F after engine had been running for at least 2 minutes, or if coolant temperature
sensor was shorted to ground.
||Coolant temperature sensor signal indicates a temperature colder than
-38° F for 60 seconds.
||ECM did not receive 2X pulses while receiving 1X pulses.
||7X reference signal problem. ECM has detected either too many or too few
pulses between sync signal within 4 minutes.
||TPS voltage was above 4.0 volts for 5 seconds when the MAP sensor signal
showed manifold vacuum to be 15 pounds or more, or the TPS voltage was greater
than 4.7 volts with throttle closed.
||TPS voltage was under 0.2 volts for 5 seconds when the engine was running.
||Inlet air temperature sensor signal showed an air temperature of 29° F
after the engine has been running for 5 minutes and 20 seconds.
||Vehicle was not in park or neutral for 20 seconds when throttle position
signal was over 7% with engine speed between 1600 and 3600 RPM and the MAP
signal showed low manifold vacuum.
||Inlet Air Temperature Sensor signal showed an air temperature over 318°
F with a vehicle speed greater than 15 MPH.
||Quad-driver sense voltage shows a low voltage for 5 seconds when battery
voltage should be present or if the sense voltage shows battery voltage
for 20 seconds when a low voltage should be present.
||MAP sensor signal voltage was too high (low vacuum) for 5 seconds when
throttle opening was under 12%.
||MAP sensor signal voltage was too low (high vacuum) for 0.2 seconds when
engine speed was under 1200 RPM or when throttle opening was over 15.2%.
||Idle speed was over 175 RPM outside the desired engine speed commanded
by the ECM for at least 5 seconds.
||ECM had received 8 2X reference pulses without receiving any 1X reference
||The EST circuit had an open or a ground and the signal did not change
when the ECM applied bypass voltage to the ignition module.
||The ECM did not detect a knock signal during near wide open throttle,
or the knock signal was present for 3.67 seconds or more during normal engine
||Oxygen sensor voltage was under 0.3 volts for 50 seconds of closed loop
||Oxygen sensor voltage was over 0.75 volts for 50 seconds of closed loop
||ECM sees a battery voltage of more than 17.1 volts for 0.2 seconds with
||Vehicle speed was less than 5 MPH when vehicle was in 2nd or 3rd gear,
or vehicle speed was greater than 50 MPH when vehicle was in 1st or 2nd
||Fuel injector driver current did not reach 4 amps. Injectors commanded
"ON" longer than the calibrated pulse width and battery voltage
was more than 9 volts for 10 seconds.