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HOMESERVICE MANUALSCHEVROLET1982FORWARD CONTROL 4.8L ENG VIN T, AUTOMATIC TRANS, TRANS MFR CD 475/M40REPAIR AND DIAGNOSIS (SINGLE PAGE)ENGINE PERFORMANCETUNE-UPDELCO-REMY HIGH ENERGY IGNITIONTESTINGINTERMITTENT SYSTEM PROBLEMS
1982 Chevrolet Forward Control 4.8L Eng VIN T, Automatic Trans, Trans Mfr CD 475/M40

Intermittent System Problems

1982 Chevrolet Forward Control 4.8L Eng VIN T, Automatic Trans, Trans Mfr CD 475/M40SECTION Intermittent System Problems
  1. Using a spark tester or modified spark plug, check for spark at 2 spark plug wires. If no spark results, see SYSTEM TESTING . If spark is noted on one or both wires, check for dwell increase from low to high RPM.
  2. Check pick-up coil with ohmmeter leads attached to Green and White wires, removed from HEI module. If reading does not indicate between 500-1500 ohms, replace pick-up coil. If pick-up coil reading was satisfactory, and dwell did not increase, replace electronic module.
  3. If pick-up coil was satisfactory, but dwell increased, check fuel, spark plug wires, distributor cap, rotor or spark plugs.
RENDER: 1.0x

NO RELATED

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Stop DIY work and contact a certified mechanic immediately if any of the following apply:

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