Glossary | Benton Harbor, MI | Pro Transmission Service Center (2024)

MAS – The Mass Airflow Sensor measures airflow into the engine and is used to determine engine load. When it fails, it can cause late, harsh shifts, early / soft shifts, or it can result in no shifts at all. It also affects engine performance.

MAP – The Manifold Absolute Pressure sensor creates a signal based on vacuum levels in the intake manifold, which indicates engine load. A faulty MAP sensor can cause late, harsh shifts, early / soft shifts, or even prevent the transmission from shifting at all.

OD – The Overdrive Switch allows the driver to disable overdrive. Depending on how it fails, the transmission may not shift into overdrive, or the driver won’t be able to disable overdrive.

PCM – The Powertrain Control Module controls the engine and transmission functions. It is responsible for all shift timing and shift feel characteristics. When the PCM fails, the transmission can stop shifting, shift harsh or soft, or cause complete transmission failure. Some vehicles use TCM (transmission control module) rather than PCM. Most vehicles have several modules: some have over ten. Often, other modules like BCM play a role in transmission function.

TFT – The Transmission Fluid Temperature sensor creates a signal based on transmission operating temperature. The computer uses this signal to alter or inhibit certain gear ranges under cold or overheated operating conditions. A failure can cause wrong gear starts, late shifts, or prevent overdrive or converter clutch apply.

Glossary | Benton Harbor, MI | Pro Transmission Service Center (2024)

FAQs

How important is a transmission service? ›

What are the benefits of a transmission service? After a transmission service is performed on your vehicle, you will notice smoother shifting and increase the life of your transmission. Remember a transmission is very costly to replace, so it is better to maintain the one you have.

What is part of a transmission service? ›

The main tasks which are included in an automatic transmission service are: Fluid drain and refill – the old transmission fluid is removed and replaced with clean and fresh fluid. Filter and gasket replacement – the filter and the gasket of the transmission system are replaced with newer ones.

What do you do when you service a transmission? ›

A complete transmission service is the most comprehensive form of preventative transmission maintenance offered. Not only do we replace transmission fluid and filter, we also check various components to make sure they are in good working order. We examine the transmission sump and pan. We clean the transmission pan.

How much should a transmission flush cost? ›

Drivers can expect to pay $125 to $250 for a transmission fluid flush service. This is approximately twice as much as a transmission fluid change.

How long can you go without transmission service? ›

If you drive manual, most manufacturers will recommend changing your transmission fluid every 30,000 to 60,000 miles. If you have automatic, you can typically boost that range up to 60,000 to 100,000 miles. There's no harm in changing your fluid early.

What are signs you need a transmission service? ›

Retro Lube Oil Change Blog
  • 1) Your Transmission is Slipping. ...
  • 2) Your Transmission is Leaking Fluid. ...
  • 3) Your Transmission Emits an Unusual Odor. ...
  • 4) Your Transmission Causes Rough Idling. ...
  • 5) Your Transmission Shifts Poorly. ...
  • 6) Your Vehicle Accelerates Poorly. ...
  • 7) Your Check Engine or Transmission Warning Light is On.

How often should transmission fluid be changed? ›

How Often Should You Change the Transmission Fluid? Since fluids break down over time, it's important to change your transmission fluid every 30,000 to 60,000 miles. Reviewing your car's manual or researching manufacturer recommendations can help you ensure you change your transmission fluid at the right time.

Can you do a transmission service yourself? ›

A transmission fluid change is something you can do at home, and the steps are easy enough: Elevate the Vehicle and Drop the Transmission Pan. Replace the Transmission Fluid Filter. Replace the Transmission Pan Gasket.

What happens if you don't service your transmission? ›

If you don't regularly replace your transmission fluid, your vehicle's transmission won't be able to run smoothly. Its working parts will wear out at a faster rate, which can lead to irreparable damage down the road.

What is a transmission tune up? ›

That's why our thorough Transmission Tune-Up service includes changing the transmission fluid and filter, adjusting any of the adjustments applicable, and cleaning out all the debris that might be in the pan from over the years. A Transmission Tune-up is a preventative maintenance service.

Is it really necessary to change transmission fluid? ›

It's essential for accelerating, maintaining your speed, and managing your drive. To take care of your transmission, you should have your transmission fluid flushed and replaced regularly.

Is a transmission flush really necessary? ›

Much like oil changes, transmission flushes should be performed every so often to maintain the transmission system, which you cannot drive without. If you bring your car in so our technicians can complete this service, your vehicle can stay running at its best.

References

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