Items marked by the "TAAT" tag:
Articles
Transmission general data
TAAT
automatic gearbox was released in 1991 by Saturn LLC. This type of gearbox was
mainly used in 1991-UP Saturn S-Series. In terms of design TAAT is a parallel
shaft FWD unit with the drive gear. TAAT has 4 forward gears and 1 reverse gear
by means of multidisc clutches, 4-element torque converter with a lock-up
clutch, 1-st sprag-type clutch, and a tooth clutch activated by a servo unit.
Number of gearsTransmission TypeDriveTorque (Nm)ATF (full capacity) LATF (change) LATF type4ATFWD6,24,2-5,2Dexron VI
Technical issues and repair guidelines
One of the main peculiarities of this transmission in comparison with common automatic gearboxes lies in the electronic control. This gearbox uses 5 solenoids together with the transmission control module and its sensors to control shift timing, shift feel, and give on board diagnostics.
Repair specialists say that the valve body is the most problematic component in TAAT. Delays, slippages, kicks or lack of Reverse during gear-shifting are likely to be caused by valve body issues. However, there are several other sources of a Reverse problem:
1. Delay or no Reverse may be caused by the loose-fitting main shaft nut
2. Malfunctioning car speed sensor may also lead to no-Reverse condition.
3. Wrong adjustment of the pattern select switch
Which cars run with this gearbox?BrandModelYearTypeEngineSaturnS-SERIES95-034 SP FWDL4 1.9L
How to repair this transmission (Videos)Valve Body Removal 1of 2Valve Body Removal 2 of 2Solenoid Testing & ReplacingDIY timing chain kit installation