Q:

What is a shift solenoid C malfunction?

A:

When a shift solenoid C malfunctions, it causes a car's transmission to shift incorrectly, which makes it difficult or impossible to drive that car. The shift solenoid is a crucial part of the transmission, which reads computer signals from the powertrain control module (PCM). The PCM tells the solenoid to open and close its valves, allowing the flow of transmission fluid, essentially telling the transmission where to shift.

Problems that arise from a shift solenoid C malfunction include:

  • No downshifting: When driving at normal speeds and slowing down, the car will not shift into a lower gear, which causes a rough and slow acceleration.
  • No reverse: Reverse will seem to be nonexistent, the car will act as if it is in neutral, and the engine will run without the car moving.
  • Skipping gears: The vehicle will miss the appropriate gear or shift randomly when the vehicle is at a stop.

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