Clutch Control

Signs of a Bad Transmission Valve Body & Repair Cost

A transmission valve body is the brains of a vehicle’s transmission. If you experience any signs of a bad transmission valve body like knocking when changing gears, gears changing unexpectedly, or the RPMs increase when you shift up, a visit to a trusted transmission shop should be on your radar. We are excited to announce free home or work pick-up and drop-off for your convenience, safety, and to promote social distancing as we try to slow the spread. Contact the transmission service shop closest to your home or work below for a free quote.

We are excited to announce free home or work pick-up and drop-off for your convenience, safety, and to promote social distancing as we try to slow the spread. We also have many financing options available at our shops across Houston on Jones Rd; Highway 6 North; Katy; Montgomery; and Porter, Texas.

Continue reading to learn more about this component’s important function, detailed symptoms of valve body failure, and average repair costs to help mentally prepare yourself.

What are the Warning Signs of a Bad Valve Body?

  • Trouble shifting into lower gear
  • gears slipping suddenly without warning
  • downshifting or upshifting on its own
  • slow shifting or pausing when you try to accelerate or decelerate
  • RPMs increase when upshifting
  • audible banging sound when the vehicle changes gears
  • check engine light or malfunction indicator light is on and throwing one of these P codes: P2707, P0829, P0715, P0783, P0751

What is a Transmission Valve Body?

A transmission valve body is the brain of an automatic transmission outputting signals to engage the clutch and shift at the appropriate time. There are two types of transmission valve bodies; an electronic valve body and a hydraulic valve body.

What Does a Working Transmission Valve Body Do?

Valve body should work with the electronic solenoids in most newer model cars, trucks, and SUVs. Valve bodies in older vehicles use the governor valve and vacuum modulator valve to regulate and manage proper clutch engagement and shifting. The electric valve body use sensors and the electric solenoid valve to control each of gear’s hydraulic circuits. The Hydraulic valve body controls the output for the driver’s manipulation of the gear shift, for example from park to reverse.

Many other valve components housed within the main transmission valve body can fail as well, so diagnosing the specific issue can take sometimes be time-consuming. This is especially true if no issues are found within the main valve body.

What Other Valve Components are Housed Inside the Valve Body?

Valves inside the main body include:

  • Throttle valve
  • Shift valve
  • Shuttle valve
  • Pressure regulator valve
  • Manual valve
  • Vacuum Valve
  • Kick down valve
  • Governor Valve

How Much Does Transmission Valve Body Repair Cost?

The price to repair a broken valve body varies depending on the specific make, model, and type of problem. For most common compact cars and sedans the average cost for to repair the tranny valve body is between $250 and $500.

What Does Transmission Valve Body Replacement Cost?

According to the American Automobile Association (AAA) the cost for complete transmission valve body replacement ranges from $300 and $1000 on average. For more accurate cost calculations based on your specific vehicle’s make, model, and year use the “Fix or Trade” calculator on their website here.

Contact My Transmission Experts

Ready to schedule a diagnostic appointment to find out what’s going on with your transmission? Call My Transmission Experts or request an appointment using via our online forms. We are excited to announce free home or work pick-up and drop-off for your convenience, safety, and to promote social distancing as we try to slow the spread. We also have many financing options available for transmission work.

CONTINUE READING

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