engine speed cruising
#1
Instructor
Thread Starter
engine speed cruising
Hello friends, hope somebody can explain something to me. When I'm cruising in 5th gear (in auto mode) and start stepping easily on the gas there will suddenly be a quick increase in RPM, as if it had down-shifted but is still in 5th gear... why is that? Tranny is not slipping. This is nothing wrong, I just want to understand what is going on in power plant / trannsmission. This is happenning probabbly between 2K and 3K RPM. Can there ba a ratio change once a gear is engaged? Maybe ignition timing or valve operation switches between a certain range? I am curious - not trying to solve any problem.
#2
Senior Moderator
iTrader: (2)
TQ converter lockup. It locks when cruising & allows the RPM to raise slightly when you step on the gas before it dis-engages.
http://en.wikipedia.org/wiki/Torque_converter
http://en.wikipedia.org/wiki/Torque_converter
Last edited by fuzzy02CLS; 07-23-2010 at 11:39 AM.
#4
B A N N E D
iTrader: (4)
TQ converter lockup. It locks when cruising & allows the RPM to raise slightly when you step on the gas before it dis-engages.
http://en.wikipedia.org/wiki/Torque_converter
http://en.wikipedia.org/wiki/Torque_converter
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