Cold DRIVEABILITY Test 11 - Start-To-Run Pick-Up Coil Transfer Circuit Check

1. Start and run engine until normal operating temperature is reached. Raise engine speed to 1100 RPM. Disconnect "Start" pick-up coil connector at the distributor (larger connector). Engine should stay running. If engine stays running, proceed to COLD DRIVEABILITY TEST 12  .
   Fig 1: Start Pick-up Connector

   
2. If engine stalls, disconnect the "Run" pick-up coil. Connect an ohmmeter between the connector terminals. Ohmmeter reading should be 150-900 ohms. If resistance is within specifications, reconnect the distributor pick-up coil connector. Disconnect the computer 10-way connector.
   Fig 2: Ohmmeter

   
3. Connect an ohmmeter between 10-way connector cavities "5" and "9". Ohmmeter reading should be 150-900 ohms. If resistance is okay, remove distributor cap. Measure "Run" pick-up coil air gap. Air gap should be .012" (.3 mm). Adjust air gap as necessary.
   Fig 3: Computer 10-Way Connector

   
4. If air gap is okay, check terminals in cavities "5" and "9" to ensure they are not spread apart causing a poor connection. If connections are okay, replace computer. If resistance in step 2) is not to specifications, replace the "Run" pick-up coil.

Fig 4: Run Pick-Up Coil