Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - how to smoothly shift back into gear from coasting in neutral (with engine running)

j12piprius · 04-03-2014, 12:49 PM

This past trip I watched the RPM dial to match 2000 to 2250 RPMs with shifting back into gear, which was not as intuitive as I thought it should be. Just a slight pressure too much caused the RPMs to jump to 3000, and a slight pressure less caused them to go down to 1000. I had to watch and consciously hold the pedal in exactly the same place, so the RPMs would stabilize and then the shifting would be smooth.

Thus the issue is not the clutch. It's the extremely jumpy gas pedal & throttle.

I looked and am pretty sure the throttle is operated by a cable, not drive by wire, but it seems to have the same type of issues. Is there a relatively simple way to even out the pressure and throttle response so they are more linear?

04-03-2014, 12:49 PM	#17 (permalink)
j12piprius Liberty Lover Join Date: Feb 2011 Location: central california Posts: 587 pris prius - '12 Toyota plug in prius 90 day: 71.09 mpg (US) Thanks: 439 Thanked 83 Times in 60 Posts	jumpy RPMs This past trip I watched the RPM dial to match 2000 to 2250 RPMs with shifting back into gear, which was not as intuitive as I thought it should be. Just a slight pressure too much caused the RPMs to jump to 3000, and a slight pressure less caused them to go down to 1000. I had to watch and consciously hold the pedal in exactly the same place, so the RPMs would stabilize and then the shifting would be smooth. Thus the issue is not the clutch. It's the extremely jumpy gas pedal & throttle. I looked and am pretty sure the throttle is operated by a cable, not drive by wire, but it seems to have the same type of issues. Is there a relatively simple way to even out the pressure and throttle response so they are more linear?