There’s been a discussion on a Honda forum about an issue with its CVTs as described in TSB 18-072. The issue is excessive clearance between the torque converter stator and transmission input shaft that allows fluid to slowly seep from the torque converter to the transmission. When a cold start follows and reverse is engaged, the transmission will start to refill the torque converter but an air pocket can form in the torque converter causing the converter to lock up and stall the engine. Honda’s solution is to replace the transmission.
I’m personally invested in this issue but have very limited transmission knowledge and would appreciate thoughts on the following:
First, is the leakage/refill issue common to all transmissions with a torque converter, so this is a problem only if leakage is excessive?
Second, do the stator and input shaft wear on one another so such a problem could progress with miles? And there’s the knowledge issue.)
Third, if there is the leakage/stall issue, is this ultimately just a nuisance or can it lead to something much more serious, like immobility?
Fourth, do transmissions typically refill torque converter whenever the engine is on, even if in Park, or does Reverse or another gear need to be engaged first?
Many thanks.
I’m personally invested in this issue but have very limited transmission knowledge and would appreciate thoughts on the following:
First, is the leakage/refill issue common to all transmissions with a torque converter, so this is a problem only if leakage is excessive?
Second, do the stator and input shaft wear on one another so such a problem could progress with miles? And there’s the knowledge issue.)
Third, if there is the leakage/stall issue, is this ultimately just a nuisance or can it lead to something much more serious, like immobility?
Fourth, do transmissions typically refill torque converter whenever the engine is on, even if in Park, or does Reverse or another gear need to be engaged first?
Many thanks.
