The first one is the more common and can be accompanied by the car shutting itself completely when coming to a stop. There are two potential causes of this issue. This can be a hazardous situation as you lose the vehicle’s ability to accelerate. When driving an Acura with a DCT system, one potential problem is that it can suddenly shift to the neutral. Transmission Shifts to Neutral During a Drive This can be solved only by replacing the torque converter. It leads to the torque converter locking up and causing very annoying vibrations. Most commonly, this is caused by a problematic torque converter combined with drivetrain programming that keeps the transmission in too high gear, usually 4th. It is most pronounced when the engine is below 2,500 RPM. Rough Shudders and Vibrations at Low Speedsįor many owners of Acuras with DCT, very early in the life of their vehicles, very annoying shudders and vibrations develop when driving at speeds under 40mph or when standing in traffic. Start the engine, wait for 10 to 20 seconds for the fluids to start warming up and flowing, and then step on the accelerator. The proper solution is to operate your vehicle as it should be in cold weather. The real cause is that people would turn on the engine and step on the accelerator in cold weather. The problem is that, like any other piece of machinery, DCT has to be warmed up in cold weather before it can work optimally. Honda did provide a transmission programming update that generally makes it go away, but it doesn’t fix it. Though many Acura owners think that this is a design flaw and problem with the DCT system, it is actually a user error. This problem almost exclusively happens in cold weather. Some owners describe it as a transmission slipping.īut the symptom is that the engine revs, but there is no increase in power reaching the wheels. The Transmission Feels Like It Is StuckĪrguably the most common problem with Honda’s DCT is the feeling of the transmission as if being stuck between gears when trying to accelerate. This is something you have to take your vehicle to a dealership, as it requires an update of PCM settings and performing the break-in procedure on the torque converter. The cause of this is that the clutches of the torque converter are not adequately “broken in,” but also specific settings in the Powertrain Controle module (PCM). This problem is specific to the models with 8-speed DCT, which feature a torque converter intended to smooth out vibrations in the lower gears. This creates unexpected and potentially dangerous situations when merging into the highway traffic, as you could do it too slow and risk being hit by the oncoming traffic. You are in the 2nd gear, and you step on the accelerator, but nothing much happens, and the vehicle starts accelerating very slowly. Imagine a situation where you are trying to make a turn onto a highway, and you see that incoming traffic is far away that you can safely accelerate. So, let’s get to their details and how to fix them. The surprising thing is that most of these problems are present on all of these three transmissions. In comparison, some problems were caused by the improper design of the wiring harness. Hesitant operation of down or upshifting and certain jerkiness while driving at low speeds in low gears were caused by slightly off programming of the transmission shift pattern. Users often presume that it functions similarly to automatic transmissions and expect it to behave similarly under certain circumstances.īut, wrong assumptions produce unexpected results. The most common issues with Honda’s DCT system can be traced to the improper operation of the dual-clutch transmission in the manual gear selection mode. Most Common Honda DCT Transmission Problems This is usually caused by the fact that DCT doesn’t have a clutch pedal, just like automatic transmissions.īut, they do not need to have it because of how two clutches are constructed, and for one clutch to engage the gear, the other must disengage its respective gear. This can be a source of many assumptions and actions that can cause improper function and damage to the transmission. Honda has three models of DCT transmissions, a 7-, 8-, and a 9-speed version, which is available on different models of their vehicles.īecause these transmissions are automated, owners usually confuse them with regular automatic transmissions. One clutch for odd gears and one for even. DCT stands for Dual-Clutch Transmission, and it is, for all intents and purposes, an automated manual transmission that uses two clutches to engage gears.
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