Practice question

An automatic transmission slips during shifts, and a pressure test shows low line pressure in all gear ranges. What is the most likely cause?

A worn torque converter turbine blade
A worn oil pump, a clogged filter screen, or a stuck-open pressure regulator valve
A failed output shaft speed sensor
Worn planetary gear teeth

Answer: B — A worn oil pump, a clogged filter screen, or a stuck-open pressure regulator valve

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