Practice question

A bus automatic transmission has a delayed engagement of several seconds when shifted from PARK to DRIVE after sitting overnight, then operates normally. This MOST likely indicates:

  1. A failed wheel bearing
  2. A bent driveshaft
  3. Fluid draining back from the pump/circuit, often a worn pump or check valve
  4. Worn brake linings

Answer: C — Fluid draining back from the pump/circuit, often a worn pump or check valve

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