| 86 2.8L VIN X Carb |
|---|
| 12 | ECM did not receive distributor reference pulses when cam pulses were
being received. |
| 13 | Oxygen sensor voltage stays between 0.35 and 0.55 volts for 60 seconds
during closed loop operation after the engine had been running for 4
minutes and the throttle angle was above 4%. |
| 14 | Coolant temperature sensor was shorted showing a high temperature
after engine had been running for 2 minutes. |
| 15 | Coolant temperature sensor was open showing a low temperature after
engine had been running for 5 minutes. |
| 21 | TPS was open showing low voltage. |
| 22 | TPS voltage was under 0.2 volts for 3 seconds when the engine was
running. |
| 23 | Mixture control solenoid circuit was either open or shorted. |
| 24 | Vehicle speed sensor was out of range after vehicle had been at road
speed for 2 minutes. |
| 32 | Barometric pressure sensor circuit was low. |
| 34 | MAP sensor or vacuum sensor was open or shorted. |
| 35 | Idle speed control switch circuit was shorted showing a high TPS reading
for over 5 seconds. |
| 41 | ECM did not see any distributor reference pulses. |
| 42 | The EST signal did not change when the ECM applied bypass voltage
to the ignition module. |
| 43 | The ESC knock signal lasted too long causing the EST signal to be
retarded. |
| 44 | Oxygen sensor was lean during closed loop operation after engine had
been running for 2 minutes. |
| 45 | Oxygen sensor was rich during closed loop operation after engine had
been running for 2 minutes. |
| 51 | PROM error. |
| 53 | EGR valve vacuum was incorrect. |
| 54 | Mixture control solenoid circuit was shorted and/or ECM is faulty. |
