AUDI TT And A3: EPC Light On And AWD Does Not Work
On the models listed, the all-wheel-drive does not work or the EPC warning light is illuminated. The technician will find there is an internal leak in the hydraulic pump.
VIDEO: U-Joint Lubrication And Maintenance
Andrew Markel shows how a universal joint can be lubricated during replacement or maintenance, as well as the importance of lubrication to its parts. Sponsored by Auto Value and Bumper to Bumper.
VIDEO: Diagnosing Undercar Noises During A Test Drive
Andrew Markel shows three tips to use during a test drive to diagnose noises relating to the wheel bearings, drivetrain and other components. Sponsored by BCA Bearings.
VIDEO: Three Tips For Driveshaft Service
More vehicles are using all-wheel or rear-wheel drive and driveshaft service is becoming more common. Andrew Markel shares three driveshaft service tips. Sponsored by Auto Value and Bumper To Bumper.
Solving Automatic Transmission Electronic Control Problems
Troubleshooting an automatic transmission can be one of the most intimidating diagnostic procedures at a shop. The first reaction is typically, “We don’t do that type of work,” but there is profit in performing drivetrain diagnostics and “in-the-car” repairs.
Dual Clutch Transmission Diagnostics
The dual-clutch transmission produces a drivetrain that has the efficiency of a manual transmission, but the ease of use of an automatic. Compared to automatic transmissions, one manufacturer claims a 5–10 percent reduction in fuel consumption from just this one feature.
Active Drivetrains And Differentials
Vehicles equipped with 4×4 or all-wheel-drive (AWD) systems are designed to provide advantages throughout the year, but winter tends to bring these vehicles into focus.
The Future Of All-Wheel Drive Vehicles
The future of all-wheel drive vehicles was not that bright five years ago. But, the customer spoke, saying they want the security all-wheel drive vehicles can give on slick roads (even if it is only for a few days during the year).
Complete Clutch Replacement: No Noise, No Comeback
Diagnosing clutch and manual transmission noise can be a difficult diagnosis. There is no way of attaching a scan tool or looking into the bellhousing while the clutch is under load. Clutch diagnostics requires logic and understanding of how the parts interact.