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Old 10-05-2017, 03:05 AM   #1
mangobs
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Join Date: Oct 2017
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what causes RPM's to change in while in gear?

https://youtu.be/Q-aUBeRxX5k
Video of explanation

When in gear and apply more throttle the rpms will jump up by 500

I have a 2001 acura CL. When I use the sequential sports shift and apply more throttle the RPMs raise by about 500. Say I am in 3rd gear, 2,000 rpm @ 30 mph. When I step on the gas the rpms will go to 2,500 instead of a steady gradual climb from 2,000. 3rd gear @ 3,000rpm is approximately 50 mph. But when I step on it the rpms will go higher than what it should be in that gear at that speed. Same with 4th gear, I could be going 30 mph at 1250 rpm. When I give it more that 25% throttle the rpms will go up to 2,000 and then slowly drop. 2,000 rpm in 4th is 50 mph however I might only be pushing 35-40 at that same rpm. What causes this to happen? Is it the torque converter lock up area or something to do with a 1 to 1 ratio between the engine and transmission? I'm curiouse as to why this is and would this be the case in a manual transmission? Thank you

In these pictures, speed is the same, throttle and rpm is greater
URL=http://s38.photobucket.com/user/MangoBS4/media/Screenshot_2017-10-05-02-57-56_zps5sf2ojeg.png.html][/url]


Last edited by mangobs; 10-05-2017 at 03:11 AM. Reason: added photo
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