I'd like to get a discussion going on about why Gear Shifts in Automatic Transmission cars Jerk... So we can bring them to a minimum (or a level of our liking) by checking these points.
I reckon this discussion would not be as applicable to the likes of Prosmatic and Vario cars because they use a different kind of gear shift technology altogether. In conventional automatic gear cars however, this is an issue.
I want to know what reasons contribute to the amount of jerk when gears shift.
Understandably the following contribute to it:
- The condition of the transmission system itself - how well maintained and little abused it is
- Transmission Oil level
- How advanced are the fuel burning settings on the vehicle (more advanced will jerk more)
What I need to know is, what other factors play a part? Do the throttle body and TPS affect the amount of jerk in the shifts?
Anything else? Your contributions would be appreciated.