|87-91 2.0L VIN K TBI
||Oxygen sensor voltage stays between 0.35 and 0.55 volts for 3 seconds.
Engine was at normal operating temperature and had been running for at least
40 seconds after start with a throttle angle above 7%.
||Coolant temperature sensor signal indicates a temperature of over 275°
F for 2 seconds.
||Coolant temperature sensor signal indicates a temperature colder than
-22° F after engine had been running for 2 minutes.
||TPS voltage was above 2.5 volts for 2 seconds when the MAP sensor signal
showed manifold vacuum to be 15 pounds or more with an engine speed less
than 1800 RPM.
||TPS voltage was under 0.2 volts when the engine was running.
||Inlet air temperature sensor signal showed an air temperature below -31°
F after the engine had been running for 2 minutes (9 minutes for Beretta
& Corsica engine).
||When engine speed was between 1400 and 4400 RPM, the MAP signal showed
low voltage (high manifold vacuum) for at least 3 seconds (5 seconds for
Beretta & Corsica).
||Inlet air temperature sensor signal showed an air temperature over 275°
F for more than 2 seconds.
||EGR open command did not change the fuel mixture when the command was
given during off idle operation. EGR opening should cause the mixture to
be slightly richer because of the low oxygen content of exhaust gas.
||MAP sensor signal voltage was too high (low vacuum) for 5 seconds when
throttle opening was under 2%.
||MAP sensor signal voltage was too low (high vacuum) when engine speed
was above 1200 RPM and TPS was greater than 20%.
||The EST signal did not change when the ECM applied bypass voltage to the
||Oxygen sensor voltage was under 0.2 volts for 50 seconds of closed loop
||Oxygen sensor voltage was over 0.75 volts for 50 seconds or more in closed
||Charging system voltage was greater than 16.9 volts for 10 seconds. Repair