15/11/2023
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*Bad or Failing Transmission Pump – Symptoms, Causes & Replacement*
A transmission pump is the heart of your vehicle’s transmission system, pumping transmission fluid to keep everything running smoothly. However, things can go pretty badly over time, and that can lead to serious issues for your car.
A bad transmission pump can give you some clear signs, such as a delayed response from your vehicle, strange noises coming from the transmission, difficulties with shifting gears, overheating of the transmission, and leaks of transmission fluid.
In this article, we will delve deeper into the world of transmission pumps. We’ll explore why they’re so important, what causes them to fail, and how to fix them.
What is a Transmission Pump?
A transmission pump is a mechanical device that is driven by the engine. When the engine starts, the pump begins to operate, circulating the transmission fluid around the system. There are three main types of transmission pumps used in vehicles: gear pumps, and vane pumps.
1. Gear pumps
Gear pumps are the most common type of pump used in automotive transmissions. They consist of two gears: one is connected to the engine (the drive gear), and the other is not (the driven gear).
When the engine runs, it rotates the drive gear, which in turn moves the driven gear. The space between the gears and the pump housing is filled with transmission fluid. As the gears rotate, they push the fluid out of the pump and into the transmission system.
2. Vane pumps
Vane pumps have a rotor with slots in which vanes or blades can slide. This rotor is positioned off-center in a circular cavity. When the engine drives the rotor, the centrifugal force pushes the vanes out against the cavity’s walls. As the rotor spins, the vanes trap pockets of transmission fluid and move it from the inlet to the outlet of the pump.
