Other indicators include bad connections within, or worn out sensors and faulty solenoids. Another instance could be the automatic transmission won’t shift into 3rd gear at all. Updated on January 24, 2019. Here’s What You Need to Know. At times, drivers may have trouble getting the car out of Park and into gear. Low fluid can prevent the transmission from shifting properly. … The problem could occur in a couple of forms such as: The transmission shifts into the first and then to second gear but does not move into the third gear. All of these lead to what is called a “no shift” condition, making the transition between gears difficult or shifting gears impossible. Disconnected, clogged or bent vacuum lines could affect the pressure in the transmission and might lead to rough shifting. Worn fluid equals poor shift quality In a normally functioning transmission, the car stays in the gear you designate, or that the computer designates for a given RPM range, until you or the computer initiate a gear shift.. Automatic Transmissions: A Dark Art? If the solenoid is malfunctioning, it can impact how the transmission fluid is distributed while you’re shifting gears causing delayed engagement. Automatic transmissions are seen as something of a dark art in the automotive industry. The first place to start with any automatic transmission problem is checking your fluid level and condition. Otherwise, adding new fluid won’t ultimately solve the problem. > Transmission Shifting Problems? It could be a leaky seal or other mechanical defect. This is because an automatic transmission uses small clutches and bands to engage the gears rather than shift forks and collars like a manual transmission. Ignoring transmission trouble warning signs will do more harm than good to your car and your finances. Slipping gears: Your transmission is supposed to stay in one gear until you shift (with a manual transmission) or the computer does it for you (with an automatic transmission). Automatic transmissions that shift hard, jerk or shake during a shift change may mean your transmission fluid needs changed or fluid level is low. Updated on January 24, 2019. Automatic transmission hard shifting might be due to problems with the vacuum lines. This troubleshooting guide will help you narrow down the transmission problem and teach you how to perform some of the repairs. A transmission stays in a designated gear until a shift is performed by the driver (manual) or the computer (automatic). By Mister Transmission. If these factors are not the problem, then it is best to take the vehicle to a licensed mechanic for service. There are three systems in an automatic transmission that work together for it to run correctly. Transmissions take a lot of use over the years, and after a while, they're bound to start having some problems. Using an advanced electro-hydraulic control module to control clutch application and gear shifting, the DSG can bring the driving comfort of a full automatic to the table while still getting the greater efficiency of the manual-style gears.