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A/T Fluid Temperature Switch

  1. Remove fluid temperature switch, located to rear of neutral safety switch. Immerse switch in container of ATF up to top threaded portion of switch. Using a DVOM, check continuity between switch terminals. Continuity should not exist when fluid temperature is 257°F (125°C) or less.
  2. When fluid is heated to 289-304°F (143-151°C), continuity should exist. Replace switch if necessary. Apply thread sealant to fluid temperature switch threads and install in transmission.
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