Home/Chevrolet/Step Van P20/Chevrolet Step Van P20 (1985-1986)/Repair manual/4.3l/5.0l/5.7l Tests W/codes

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Repair manual

4.3l/5.0l/5.7l Tests W/codes Chevrolet Step Van P20

Step-by-step instructions on "4.3l/5.0l/5.7l Tests W/codes" for Chevrolet Step Van P20 (1985–1986). Pick an article — removal, installation, adjustment and diagnostics with illustrations.

22subsections

22articles

87illustrations

DIAGNOSTIC CIRCUIT CHECK - TESTING

1 article

DIAGNOSTIC CIRCUIT CHECK - TESTING 2

SYSTEM PERFORMANCE CHECK

1 article

SYSTEM PERFORMANCE CHECK 2

CHART A1 - DWELL FIXED UNDER 10°

1 article

CHART A1 - DWELL FIXED UNDER 10° 2

CHART A2 - DWELL FIXED BETWEEN 10°-50°

1 article

CHART A2 - DWELL FIXED BETWEEN 10°-50° 2

CHART A3 - DWELL FIXED OVER 50°

1 article

CHART A3 - DWELL FIXED OVER 50° 2

CHART A5 - "CHECK ENGINE" LIGHT INOPERATIVE

1 article

CHART A5 - "CHECK ENGINE" LIGHT INOPERATIVE 2

WON'T FLASH CODE 12 OR "CHECK ENGINE" LIGHT ON AT ALL TIMES

1 article

WON'T FLASH CODE 12 OR "CHECK ENGINE" LIGHT ON AT ALL TIMES 2

CODE 12 - NO DISTRIBUTOR REFERENCE PULSES

1 article

CODE 12 - NO DISTRIBUTOR REFERENCE PULSES 2

CODE 13 - OXYGEN SENSOR CIRCUIT

1 article

CODE 13 - OXYGEN SENSOR CIRCUIT 2

CODE 14 - COOLANT SENSOR SHORTED

1 article

CODE 14 - COOLANT SENSOR SHORTED 2

CODE 15 - COOLANT SENSOR OPEN

1 article

CODE 15 - COOLANT SENSOR OPEN 2

CODE 21 - TPS CIRCUIT HIGH

1 article

CODE 21 - TPS CIRCUIT HIGH 2

CODE 23 - M/C SOLENOID CIRCUIT LOW

1 article

CODE 23 - M/C SOLENOID CIRCUIT LOW 2

CODE 34 - DIFFERENTIAL PRESSURE (VACUUM) SENSOR

1 article

CODE 34 - DIFFERENTIAL PRESSURE (VACUUM) SENSOR 2

CODE 41 - NO DISTRIBUTOR REFERENCE SIGNAL

1 article

CODE 41 - NO DISTRIBUTOR REFERENCE SIGNAL 2

CODE 42 - ELECTRONIC SPARK TIMING (EST)

1 article

CODE 42 - ELECTRONIC SPARK TIMING (EST) 2

CODE 43 - ELECTRONIC SPARK CONTROL (4.3L ONLY)

1 article

CODE 43 - ELECTRONIC SPARK CONTROL (4.3L ONLY) 2

CODE 44 - LEAN EXHAUST INDICATION

1 article

CODE 44 - LEAN EXHAUST INDICATION 2

CODE 45 - RICH EXHAUST INDICATION

1 article

CODE 45 - RICH EXHAUST INDICATION 2

CODE 51 - FAULTY PROM

1 article

CODE 51 - FAULTY PROM 1

CODE 54 - M/C SOLENOID CIRCUIT VOLTAGE HIGH

1 article

CODE 54 - M/C SOLENOID CIRCUIT VOLTAGE HIGH 2

CHART C1 - ECM REPLACEMENT CHECK CHART

1 article

CHART C1 - ECM REPLACEMENT CHECK CHART 46

DIAGNOSTIC CIRCUIT CHECK - TESTING

SYSTEM PERFORMANCE CHECK

CHART A1 - DWELL FIXED UNDER 10°

CHART A2 - DWELL FIXED BETWEEN 10°-50°

CHART A3 - DWELL FIXED OVER 50°

CHART A5 - "CHECK ENGINE" LIGHT INOPERATIVE

WON'T FLASH CODE 12 OR "CHECK ENGINE" LIGHT ON AT ALL TIMES

CODE 12 - NO DISTRIBUTOR REFERENCE PULSES

CODE 13 - OXYGEN SENSOR CIRCUIT

CODE 14 - COOLANT SENSOR SHORTED

CODE 15 - COOLANT SENSOR OPEN

CODE 21 - TPS CIRCUIT HIGH

CODE 23 - M/C SOLENOID CIRCUIT LOW

CODE 34 - DIFFERENTIAL PRESSURE (VACUUM) SENSOR

CODE 41 - NO DISTRIBUTOR REFERENCE SIGNAL

CODE 42 - ELECTRONIC SPARK TIMING (EST)

CODE 43 - ELECTRONIC SPARK CONTROL (4.3L ONLY)

CODE 44 - LEAN EXHAUST INDICATION

CODE 45 - RICH EXHAUST INDICATION

CODE 51 - FAULTY PROM

CODE 54 - M/C SOLENOID CIRCUIT VOLTAGE HIGH

CHART C1 - ECM REPLACEMENT CHECK CHART

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