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well.... i've been told that letting them idle long periods washes the cylinders down. a lot of people have said to keep it under 15 minutes of idle time unless you can get the engine up over 1000 rpm for the idle time.
I agree 100% with skeeterkilr.:thumbsup
Efilive can adjust your idle settings, and I believe you can also use the PTO input pin on your PCM to control your idle with a switch.
If you need to idle your truck and need this done, I can help you with it if you would like.

Anyway if you have any questions about it let me know

Thanks,
Josh
 

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17 Posts
well.... i've been told that letting them idle long periods washes the cylinders down. a lot of people have said to keep it under 15 minutes of idle time unless you can get the engine up over 1000 rpm for the idle time.
I agree 100& with skeeterkilr:thumbsup

LLY's don't have a switchable high idle like the LB7's

The LLY's PCM is programmed to enable the Elevated Idle when the following conditions are met: Engine coolant must be above 5 F and below 145.5 F
and intake temp must be below 41.5 F.
when enabled it elevates idle speed by 80 RPM every second until it reaches the desired idle speed of 1200.0 rpm.

Efilive can adjust the idle settings if needed, if you plan on letting your rig idle you probably want to bump up the normal desired idle speed.
Below is the stock desired idle speeds

Stock Desired Idle Speed
( F ) RPM
-40 850.0
-18 850.0
3 800.0
25 750.0
46 750.0
68 712.5
90 690.0
111 680.0
133 680.0
154 680.0
176 680.0
198 682.5
219 690.0
241 697.5
262 710.0
284 727.5
306 750.0
 
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