#IS AISIN TF 80SC PROBLEMS FULL#
The AS69RC has three planetary gear-sets, one over-running clutch, and full electronic control over shifting and the torque converter clutch. Once again, the Aisin transmission was only available with diesel engines though it was now standard on some high performance diesels Ram introduced a dual transmission cooler setup at the same time, along with a transmission fluid heating system. The transmission was covered by a 3-year,mile warranty. Starting inthe Aisin torque converter locked up in PTO mode for fuel economy and speed control while using aerial lifts and air compressors customers also gained the ability to program a precise engine RPM that is activated immediately when the PTO is engaged. The transmissions have three planetary gear-sets, with one overrunning clutch. The commercial-grade six-speed automatic was electronically controlled, with advanced electro-hydraulic clutch-to-clutch control and close gear ratios albeit with a wider range than the Chrysler six-speed and both static and mobile power takeoff PTO capability. The Ram started using the Aisin Seiki six-speed AS68RC automatic transmission inas an option on all of its diesel-powered chassis cab trucks the transmission was rated at lb-ft of input torque capacity. List of Aisin transmissionsĪisin AW is the largest producer of automatic transmissions in the world, thanks partly to its massive Toyota business. The joint venture has a technical center in Europe, which does research, rebuilding, and manufacturing. The relationship with Jeep for automatic transmissions goes back much further, to the Cherokee and Comanche, which used the AW-4 automatic whose creation was reportedly dominated by Borg-Warner.Īisin Seiki is a Japanese corporation founded in which goes far beyond automotive around one third of the company is owned by Toyota, but the customer base also includes companies such as Volvo, Ford, and Hyundai. This should be avoided.Cars by name Trucks and Jeeps. Sometimes this crash in to gear can be extreme.
I have yet to see a transmission that has flare between multiple gears but I guess it is possible.Ī shift flare followed by hard gear engagement while under heavy engine load that can break i. In other words, you may intermittently get a flare but it will always be between 2 nd and 3 rd. The flare may not occur consistently but will be between the same two gears. The most common shift flare is between 2 nd and 3 rd gear but the issue can occur between any gears. Sometimes when applying the throttle after almost coming to a stop, you will get a harsh gear engagement but without significant an engine RPM flare. They are most noticeable when coasting to a stop. Typically, the transmission will start exhibiting the symptom between the same two gears.Įarly on, this may only happen randomly once the transmission is warmed up but as it gets worse, it may happen consistently at any temperature. It seems to be more common with lower gears but can happen with any of the shifts. The transmission will simply shift out of the lower gear and delay before engaging in the higher gear. Shift flare is a condition that occurs on up shifts between a lower gear and a higher gear. Most of the problems with these transmissions can be solved without even removing the transmission from the car.
I contacted various Volvo specialty and transmission shops in the Portland area and discussed issues they see with the TF Most of the shops confirm that they rarely see a TF80 actually fail to the point that they need to be rebuilt.
Variations of this transmission are used by a lot of different car manufacturers, but Volvo seems to have more problems with it than others. I found lots of people on forums having issues with the transmissions in these cars but the opinions on the problem and solution were all over the place. Soon after buying it, I started having transmission shift flare issues which ultimately led me on a quest for knowledge.
0 kommentar(er)
