2015 Cascadia Idle Optimizer

Okay driver, pay attention.

Turn the engine on.

• Make sure hood is down and securely latched.
• Put trans in neutral. Clutch pedal, all the way to the floor and release.
• Put range selector into high, and press the cruise control button (on.)
• You should now see the dash icon, illuminated, showing that opti idle is prepared to be set
• Get into sleeper
• Press mode TWICE
• Press the down button, this selects the desired interior temperature
• The dash icon should not be flashing (if I remember correctly) Though I think the newer cascadias might force the icon to go solid, as soon as the opti idle is set properly
• On the next 5 min cycle, it will no longer shut down assuming the exterior tempt and interior temp are outside of the set parameters of opti-idle.

I'm sorry about your luck, getting a truck that is setup with opti-idle. It's a really terrible solution to the issue of idling. But we all have to play the cards we're delt.

A quick tip? Don't run that hvac at 100% force. Run it slightly lower, rather around 3 out of 4 on the selector. It will keep the cab cool, but won't cool it enough for the engine to completely shut down.

Wrapping a hand warmer around the exterior temp sensor will force the ECU to think it's hotter than it really is, outside, thusly allowing you to idle more easily.

You can also turn on "engine" mode, by skipping the last 5 steps. This will force the engine to kick over when the battery goes below 12.4 volts, and keep the batteries charged. Handy for when you're parked on home time or sitting in non-idle weather conditions. But I always fell back on the hand warmer method.

PS- if you bump that stick? Yeah, it's gonna pop itself out of opti-idle. It will also do that to itself, occasionally, when it kicks over or shuts down. Sometimes, wrapping a bungie cord on both sides, and attaching them to the seat mounts will help this. But again; opti-idle is just...God I hate it...

PPS- the external temp sensor is on the back of the trucks frame, typically secured to the far bumper with a zip-tie. It's a small, rounded out at the top 1.5 inch black device connected to 3 wires via a small clip connector. It's easy to identify.

PPPS- A video for reference.

 

Bungees??? :wtf:

 

I know man. But you've gotta do what you've gotta do. That #### FL will kick itself out about 1 out of every 10 starts after a few years. That's not terrible, it represents about 4-5 hours of hvac control on a hot day. But being woken up, twice a night? Just to reset the idle control?

I had two separate Cascadias, with FFE on my own. My trainer also had one. Respectively their their years were

Trainer-'11
First solo- '09
Second solo- '12

All three did this, all were running dd13's and eaton-fuller 10 spd.

The bungies do help, and will even sometimes stop you from accidentally bumping it out when you're hopping in the drivers seat to play with the qualcomm.

 

Explain what you're doing with the bungees, please

 

Sure, take a lengthy bungie, wrap the middle of he bungie around the base of the stick shift, then connect each end to the frames of both seats. This helps stabilize the shifter when the truck is starting up, so it doesn't wag around and kick itself out of opti-idle.

 

Well, this is what I do on my 2015 Evo(auto)1> Make sure the the CC is off completely, so you don't see the round sign on the dash, 2>Press the resume/acc button once and i have noticed my RPM just takes a gasp, by which i mean from 500 rpm to 510 rpm. You don't even notice that on the dash bcos it is incremental in 100 rpm, but trust me, i am idling in hot Kelowna all day at 510 rpm and i does not shut off.