Do-it-yourself Mazda repair tribute

The automobile concern Mazda, unlike its competitors, does not particularly like to experiment with transmissions. After unsuccessful attempts to curb rotary engines in the 80s and 90s, Mazda decided to make calm and successful cars. Typically, transmissions used on Mazda vehicles are time-tested, reliable designs. In the middle of the 2000s, Mazda nevertheless decided to modernize transmissions due to new requests and competition. But this time it was ingenious reworking and modernization of existing schemes that did not spoil anything and left their transmissions reliable, easy to repair and unpretentious in everyday driving and operation. A car service anywhere in the world can easily cope with the repair of Mazda boxes.

The second generation of the sixth model, the Mazda 6 GH, received the TF80SC automatic transmission. The family of these automatic machines is designed for engines from two to five liters, with a torque of up to 450 Nm. The latest modifications of this automatic transmission are an engineering masterpiece. Mazda engineers managed to fit the machine into the engine compartment with their own hands and ensured very fast and smooth switching. The Mazda 6 GH automatic transmission allows you to go fast, economically and at the same time it is very reliable and not subject to overheating, like modern counterparts and easily competes with preselective gearboxes.

The weak point of the Mazda 6 GH automatic transmission is traditional for six-speed transmissions. The Mazda 6 GH torque converter still uses a friction lining that wears down and clogs the box with its decay products. Locking in this automatic transmission is made traditionally and is not used constantly, as in modern cars. The Mazda 6 GH automatic transmission, like its counterparts, is subject to combustion of clutch packages. Usually starting in second gear or reverse. After the combustion of at least one, all other clutches of the Mazda 6 GH automatic transmission will be saturated with burnt oil and will soon fail.

Video (click to play).

Valve body mechatronic TF80SC

The valve body needs cleaning every 150,000-200,000 kilometers; this requires a visit to a car service. It will be problematic to dismantle the box with your own hands and flush it. In our winter, rubberized pistons become tanned after a few years and need to be replaced. The Mazda 6 GH automatic transmission is very sensitive to oil, it is better to pour only the original.

Mazda Demio was equipped with a four-speed automatic transmission 4F27E. This "workhorse" is still being produced. Major malfunctions are usually associated with dirty oil. The clutches of the overdrive package and reverse gear are the first to suffer on Mazda Demio. This is a classic Mazda Demio problem associated with the design features of the automatic transmission. This is due to the wear of the seat on the drum of the Mazda Demio automatic transmission and subsequent oil losses. The Mazda Demio computer overloads this node unnecessarily. Consumable tape for Mazda Demio is considered a consumable. The piston of the overdrive package often changes, especially if the box has overheated. The teflon rings of the rear cover and pump can be considered consumables and can be changed along with the oil and filter change. The electrics and the automatic transmission valve body are very reliable and rarely require repair.

Automatic transmission control unit 4f27e

Mazda Premasi was equipped with an automatic transmission of the 4EAT-G series. This is the first Mazda automatic transmission, on which electronic control began to be implemented. A significant share of requests for the repair of this automatic transmission ends with the replacement of the torque converter oil seals and various gaskets. The auto repair shop usually considers such work to be easy. From the clutches on Premasi, the packages of the third and fourth gears usually burn out. From the electronics, the line pressure and torque converter lock-up solenoids are the first to fail. For older cars, it is better to change the entire set of solenoids.When driving for a long time with a low oil level or with a dirty gearbox, bushings and oil seals quickly wear out. This usually manifests itself as increased vibration when driving a car. In the event of their appearance or strengthening, you should not wait for the denouement, but immediately go to the car service.

Mazda MPV was equipped with a G4A-EL gearbox. These automatic transmissions usually run for a long time at the MVP, but they arrive already in poor condition. Usually, the entire set of clutches is immediately changed on the MPV. Various gaskets that give oil leaks are aging, they should also be changed at the earliest opportunity. The gasket and pump seals are the weak point of the MPV. The electrical is very reliable and rarely fails, with the exception of solenoids, of course.

The Mazda Tribute was equipped with a CD4E box. This very simple and reliable four-speed transmission has become very popular. For three-liter engines, this transmission is rather weak, but on less powerful engines it drives for a very long time, it is simply repaired and drives the same amount. The best design solutions from it were implemented in 4F27E. The first thing that develops its resource in this automatic transmission is the solenoid block. It all starts with the abnormal and incomprehensible operation of the automatic transmission, which receives increased or decreased pressure. In second place is usually the speed sensor, over time it begins to "lie" and "confuse" the electronic control unit.

Mazda 3 models were equipped with a four-speed automatic transmission 4F27E, a relative of the CD4E. This is a unique box, it can be repaired without removing it from the car. Repair work can be carried out by any car service where there is a lift. Its problems are similar to the rest of the range of automatic transmissions produced for the automaker Mazda.

4F27E automatic transmission for Mazda 3 models

Mazda Familia was equipped with a four-speed automatic transmission FN4A-El. The same is installed on the Ford Focus.

The clutches are reinforced here compared to Ford. The overdrive and reverse packages are close in resource to all other clutches and are no longer a weak point. But no one is immune from this if there are oil leaks. Aggressive driving results in increased lateral loads on the caliper, resulting in a skewed drum. Its shrinkage ring can jam and the drum will begin to slip, carving out a gap through which oil will ooze.

After the aging of the overheated rubber of the pistons, chips and dirt can enter them, which will also lead to burnout of the clutch packs.

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On Mazda cars, the metal of the back cover is softer than on Ford, so sometimes problems arise with it. The cover must be restored.

Teflon O-rings are consumable, they are easily abraded during vehicle operation. This is a constructive feature and nothing can be done about it. However, the engineers have provided for the possibility of replacing the rings without removing the automatic transmission, for which a special thanks to them. The frayed rings will begin to leak oils and the box can be seriously damaged from this.

Mazda Surname with four-speed automatic transmission FN4A-El

It is also worth checking the pump seals and gaskets for leaks. If it comes to replacing them on the pump, it is better to change the bushings too.

The electrical part of this automatic transmission is very reliable, but the valve body gaskets also require periodic replacement.

Some transmissions from Mazda are so popular, widespread in the world and simple that they learn how to repair automatic transmissions from them. Any car service specializing in automatic transmission repair has seen Mazda boxes more than once. If you wish, you can try to learn how to repair automatic transmissions with your own hands. But it is better to leave this business to experienced professionals and stop by a car service.