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Home >> Pontiac >> 2003 >> Grand Am GT1 >> Repair and Diagnosis >> Transmission >> Automatic Trans >> Automatic Transaxle Servicing >> Lubrication >> Oil Cooler Flushing & Flow Check >> Flow Test

Flow Test

NOTE: The flow test must be performed after the flush to ensure that all flushing solution and water is removed from the oil cooling system.
  1. Disconnect both hoses from the oil cooler pipes. Connect the oil cooler feed pipe (top connector) to the transaxle for normal flow.
  2. Clip the discharge hose (5) onto the empty oil drain container. See Figure .
  3. Confirm the transaxle is filled with automatic transaxle fluid. See CHECKING FLUID LEVELS  .
  4. Start the engine with the transaxle in PARK range and run for 30 seconds. A minimum of 2 qts. (1.9L) must be discharged during this 30-second run time.
  5. If fluid flow is greater than 2 qts. (1.9L) in 30 seconds, connect the oil cooler feed pipe to the front connector of the transaxle.
  6. If fluid flow is less than 2 qts. (1.9L) in 30 seconds, perform the following diagnosis:
    1. Disconnect the transaxle oil cooler and line flusher discharge hose (5) from the oil cooler return pipe.
    2. Disconnect the oil cooler feed pipe at the radiator.
    3. Connect the transaxle oil cooler and line flusher discharge hose (5) to the oil cooler feed pipe, radiator end.
    4. Clip the discharge hose (5) onto the oil drain container.
    5. Start the engine with the transaxle in Park range and run for 30 seconds after fluid begins to flow from the discharge hose (5). A minimum of 2 qts. (1.9L) must be discharged during this 30 second run time.
  7. If the amount of transaxle fluid flow remains less than 2 qts. (1.9L) in 30 seconds, inspect the oil cooler feed pipe, top connector, for restrictions or damage. If no condition is found with the feed pipe, inspect the transaxle.