Shift pointers: High-mileage transmissions and the aches and pains of age
Among the most common four speed-transmissions keeping shops busy today are the Ford 4R70E/W, the GM 4L60-E and the GM 4L80-E. In most cases, this typically equates to working on high-mileage vehicles. Aches and pains come with age and/or high mileage. In fact, when we see a person who looks beat and tattered, some may
Toyota/Lexus UA/UB series: Critical wear areas and vacuum test locations
Sonnax has provided the following guide on critical wear areas and vacuum test locations for the Toyota/Lexus UA and UB lines of transmissions. Technicians working on these models should find this guide helpful. Read more stories from our TASC Force Tips series here.
Looking for the cause of repeated 6T40 torque converter failure
The converter clutch was applied just enough to drag but not enough to kill the engine.
6T40 delayed engagements after overhaul
The problem lies in the compensator piston that a generation two clutch housing uses compared to the generation one housing.
GM 6T70/75 slips and delays in first
A 2015 Chevrolet Equinox equipped with the 3.6-liter engine and 6T75 transmission has complaints of a delayed engagement into drive and slips in first gear.
How to fix GM 6T70/Ford 6F50 rattling noise with transmission in gear
A rattling noise is coming from the transmission whenever the engine is running and the transmission is in gear.
The importance of the follow-up road test after transmission replacement
A 2002 Lexus RX300 equipped with a 3.0-liter V6 engine and U140F transmission was brought into our facility with a few concerns. The customer said that “it has a leak, a grinding noise when taking off from a stop, and it just doesn’t seem to shift right.” They went on to tell us that this
Tips and tricks for Chrysler switch valve plug testing
As technicians, we are often faced with build issues that can sometimes be frustrating at first. But with a little ingenuity, these frustrations can be turned around and made simple. In 1989, Dodge came out with the first fully hydraulic electronic-solenoid shifting transmission, the A604 (no shift valves), which later became the 41TE. Originally, there
GM 8L90 #7 Check-ball: The overheat that saved the day
Beginning in October of 2015, GM removed the #7 Check-ball from the solenoid valve control body in the 8L90 transmission (see Figure 1). This was done in conjunction with the elimination of the Lube Override Enable Valve from the upper valve body as shown in Figure 2. When this took place, the Lube Override Enable
ETE Reman: Ever expanding
With a history and reputation dating back to the 1980s, growth is a continuous pattern at Milwaukee’s ETE Reman. CEO Noah Rickun says that ETE is ready to meet the ever-expanding demand for remanufactured transmissions. He points to a combination of available capital to invest in the facilities, equipment, technical capabilities, and the well-trained workforce
Shift Pointers: Nissan’s no throttle response
Nissan vehicles using continuously variable transmissions (CVTs) are notorious for defaulting to a no throttle response when the vehicle is engaged into gear. There are several malfunctions that can cause this protective failsafe feature to be initiated. A brake switch (stop lamp switch) stuck on, a double-footed driver, blown or incorrect brake bulbs, and wheel
Jatco/Nissan JF011E critical wear areas and vacuum test locations
Sonnax has provided the following guide on critical wear areas and vacuum test locations for the Jatco/Nissan JF011E. Technicians working on these models should find this guide helpful. (Ed. Note: This is an extended version of the guide found in our September issue, with three additional pages).
