1976 Ford Courier Automatic TransFACTORY OEM SERVICE PROCEDURE

1979 Models

  1. Remove thermo valve from bottom of intake manifold. Place in container of water with thermometer. Slowly heat up water.
  2. When cold, no air should pass through valve (blow through vacuum line still attached to thermo valve fittings). When water reaches at least 115Β°F (45Β°C), air should pass through valve. If not, replace thermo valve.
Factory Service Tools

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When to See a Mechanic

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

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.