My daughter has a 2001 Outback/L.L. Bean; 3.0 Engine, 4EAT transmission. At ~151K, I replaced Trans. Duty C Solenoid, seals, clutch plates, several drain/refills on the transmission fluid and the front and rear axle differentials. Generally speaking, the OB transmission has performed well since.
Since the work above, there is a very noticeable hard “bump” (hard shift) coming from the transmission (or differential) whenever the accelerator is disengaged/reengaged while “cruising” at highway speeds (60MPH+). I’m not certain if the “bump” existed before the transmission work, but my daughter thinks that it did not exist before.
Since the work above, there is a very noticeable hard “bump” (hard shift) coming from the transmission (or differential) whenever the accelerator is disengaged/reengaged while “cruising” at highway speeds (60MPH+). I’m not certain if the “bump” existed before the transmission work, but my daughter thinks that it did not exist before.
- If accelerator is pressed ever-so-gently while cruising at highway speeds, the bump doesn’t occur. In other words, it can be minimized/eliminated if a conscious effort is made to VERY gently press accelerator while cruising.
- “Bump” not noticeable at lower speeds when accelerating/decelerating in low-speed, stop-and-go traffic
- I checked the dropping resistor - OK.
- Could the clutch plate replacement @ 151K be related?
- Maybe something associated with the accelerator feedback in the ECU and/or the TCU?
- Or is it common and nothing to really worry about?