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About Transmission Diagnostic

A WORD ABOUT TRANSMISSION DIAGNOSTIC

Using advanced transmission repair procedures allows AAA Transmission to produce the finest products and an outstanding warranty.

Before work is performed, the transmission problem must have an initial diagnosis. A diagnosis takes about 20 minutes and can be done while you wait. In today's computer-controlled vehicles, having advanced equipment and proficiency is essential.

Since many transmission problems are easily and inexpensively corrected, a missed diagnosis could cost you a thousand dollars or more. The shop you choose should have the electronic tools and the expertise to isolate the small problems from the big ones.

The transmissions in almost all vehicles built in the last fifteen years are partially or fully computer controlled. Data is collected from various sensors on the engine and transmission, and calculations are made to control shift timing and firmness.

Quite often a failed electronic component will create the illusion of an internal transmission problem. By using transmission test equipment specifically designed for the task, we can operate the transmission independent of the vehicles onboard computer system. Our procedures isolate the electronic and mechanical systems from each other, providing an accurate diagnosis.

MANUAL TRANSMISSIONS

If you drive a manual transmission car, you may be surprised to find out that your car has more than one clutch in it. And it turns out that folks with automatic transmission cars have clutches, too. In fact, there are clutches in many things you probably see or use every day: Many cordless drills have a clutch, chainsaws have a centrifugal clutch and even some yo-yos have a clutch!

What Can Go Wrong?

The most common problem with clutches is that the friction material on the disc wears out. The friction material on a clutch disc is very similar to the friction material on the pads of a disc brake, or the shoes of a drum brake — after a while, it wears away. When most or all of the friction material is gone, the clutch will start to slip, and eventually it won't transmit any power from the engine to the wheels.

The clutch only wears while the clutch disc and the flywheel are spinning at different speeds. When they are locked together, the friction material is held tightly against the flywheel, and they spin in sync. It is only when the clutch disc is slipping against the flywheel that wearing occurs. So if you are the type of driver who slips the clutch a lot, you will wear out your clutch a lot faster.

Another problem sometimes associated with clutches is a worn throw out bearing. This problem is often characterized by a rumbling noise whenever the clutch engages.