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Old 01-26-2009, 10:24 PM   #4 (permalink)
Xringer
Old Retired R&D Dude
 
Join Date: May 2008
Location: Woburn Mass USA
Posts: 702

Little Red - '12 Toyota Prius c 2 Two
90 day: 57.82 mpg (US)

"Whitey" Bulger - '14 Toyota RAV4 LE
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How does the CC decelerate (slow down, like when you are going downhill)?

It almost seems like it would have to release some of the vacuum inside the
diaphragm, so pull on the throttle is relaxed a little.
So, do they let a little air into the diaphragm chamber?

Or, does pulsing the line with the electrically controlled valve with less vacuum behind it relax the diaphragm?
(I guess I need to see a video of a vac-CC in action)..

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I think my logic might be faulty. Since it's a feed-back system, the pulse rate will most likely be increased by the Brain, if the VSS pulses don't start changing quickly enough.?.

I'm starting to think the best way to Mod the CC is to automate the inputs to the manual up-down speed buttons.

Monitor the TPS voltage and when it is increased by the CC, pulse the Down button line into the CC..
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Cheers,
Rich

Current ride: 2014 RAV4 LE AWD (24 MPG)

Wife's Pizza Transporter

Last edited by Xringer; 01-26-2009 at 10:38 PM.. Reason: Did more Reasoning.
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