What happens when a transmission valve body goes bad?

The valves will wear down, the channels can be abraded and become oversized, and the whole valve body unit can become warped. Signs of a bad valve body can be fluid leaks, slipping during gear changes, or even failure to go into gear.

How do you know if you have a bad valve body?

Symptoms of a Failing Valve Body

  1. Delayed Garage Shifts. One of the most common symptoms of a failing transmission valve body is a delay in shifting or harsh shifting.
  2. Incorrect Shifting. When driving, you could notice the transmission shifting into higher or lower gears at the wrong time.
  3. Shift Flares.
  4. Gear Slippage.

When should a transmission valve body be replaced?

Generally speaking, if you have a higher mileage car (100,000 miles or more), you should simply replace your valve body. For lower mileage cars, rebuilding the current transmission valve body is a fairly good option if you’re dealing with a good transmission shop.

How much does it cost to replace a valve body on a transmission?

On average, you’re going to have to pay somewhere between $400 and $850 to have a transmission valve body replaced. That includes parts that’ll cost you anywhere from $250 to $500 and several hundred dollars worth of labor.

Is a valve body included in a transmission rebuild?

A transmission repair is basically that, just a repair. Sometimes that’s all that’s needed. A repair is considered anything less than disassembling the transmission and can include anything from replacing a pump or valve body to a simple solenoid or sensor replacement.

Can a valve body be repaired?

Rebuilding the valve body is a great option that is typically less expensive than purchasing and installing a brand new or remanufactured one. While saving you and your customer money is a great benefit in general, there are situations where rebuilding a valve body is especially appropriate.

Is the valve body part of the transmission?

The valve body is the control center of the automatic transmission. It contains a maze of channels and passages that direct hydraulic fluid to the numerous valves which then activate the appropriate clutch pack or band servo to smoothly shift to the appropriate gear for each driving situation.

Can you repair a valve body?

What causes a valve body to go bad?

When the lubricant used becomes worn out or leaks out, the metal parts of the transmission valve body rub against each other and wear out, causing tiny metal pieces to find their way into the transmission fluid. The effect of this is that the gears may stick and in turn fail to work as required.