Automatic Transmission Erratic Shifts After Filter Replacement
Changing the automatic transmission filter and fluid is a great preventive maintenance practice, ensuring a clean and proper working transmission assembly. The most important factors are installing the correct filter for the vehicle application and the correct installation procedures of the filter. An incorrect filter installation or the wrong filter will ultimately cause erratic shifts and possibly cause damage to the transmission assembly.
Tech Tip: Pilot Bearing/Bushing Diagnosis
Most rear-wheel drive, and some front-wheel drive, vehicles with manual transmissions use a pilot bearing/bushing. The pilot bearing/bushing supports and centers the transmission input shaft and clutch disc. When the clutch is disengaged, the pilot bearing/bushing allows the flywheel to maintain engine rpm, while the input shaft is slowing down and stopping.
GM Makes Transmission Control Module Repair Easier With Release of Programming Tools
The programming setup is easily accessible via a download that can be secured through a TIS2Web Service Programming subscription, GM’s next-generation Technical Information System. Seven subscription packages are offered, varying by price, expiration date and support level. With a subscription in hand, all that’s required for a tech to flash the TEHCM is a J2534 device or scan tool.
New TransTec Global Transmission Guide Available
Transmission professionals can identify automatic transmissions in virtually any vehicle in the world, including models as current as 2014, with the new TransTec Transmission-by-Vehicle Guide available on the Web, as a mobile app and as a printed reference.
Dual-Clutch Transmissions: Coming To Your Shop Sooner Than You Think
A dual-clutch transmission is more than just two clutch plates where there was just one. The two clutches are not connected. The clutches power shafts with one nested inside the other. These input shafts connect to what could be called counter shafts that run parallel to each other.
ASE A2 Test Prep (Automatic Transmission/Transaxle Test Prep): Torque Converter Basics
The concept of using a torque converter, oil pump, planetary gear sets, clutches, bands and a computer-controlled hydraulic valve body to transmit torque and to change gear ratios is relatively simple.
ContiTech Offers Range Of Diagnostic Support Options For Power Transmission Products
ContiTech’s Power Transmission Products Group is now offering a full line of products and services designed to help technicians easily detect and repair faults in belt drives. Using specially designed tools and equipment, ContiTech says it is focused on issues that can stop a vehicle or machine, not to mention a business.
Tech Tip: Dodge Has A P2767 Code With Transmission In Limp In Mode
If you encounter a Dodge with a P2767 trouble code set, check the wiring between the transmission and the transmission control module. Make sure the #2 signal wire is not open, shorted to ground, or shorted to any other circuit. If the wiring checks OK, raise all four wheels off the ground, start the vehicle and place the shifter in drive. While lab scope testing the #2 signal wire, obtain second gear. When the transmission is in second gear, there should be a 5-volt square wave pattern being produced by the #2 sensor. If not, replace the sensor.
AMSOIL Expands Signature Series Family To Include Automatic Transmission Fluid
AMSOIL INC. has re-positioned two of its synthetic automatic transmission fluids to be included in the company’s Signature Series family. The new designation reflects the premium quality of AMSOIL Multi-Vehicle Synthetic Automatic Transmission Fluid and AMSOIL Fuel-Efficient Synthetic Automatic Transmission Fluid, said the company.
ContiTech Power Transmission Group Introduces New Website
ContiTech Power Transmission Group has introduced a new website for OE automotive drive belts.
Transtar Enhances Standard Transmission Product Offering Nationwide
Transtar Industries says it has enhanced its standard transmission product offering by expanding inventory throughout its nationwide distribution network. More customers will now have access to standard transmission products from All Transmission Parts (ATP) with same-day delivery.
JASPER Updates Transmission Hydraulic Clutch Testing
The Quality Engineers of Jasper Engines & Transmissions have updated the company’s transmission hydraulic clutch testing process. Hydraulic clutch testing is a method of simulating the operation of a transmission clutch. The process identifies defective clutches not typically identified by dynamometer testing.