High Idle Mod
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Senior User
Joined: Aug 2006
Posts: 291
Likes: 0
High Idle Mod
Completed the High Idle Mod today using #4 upfitter switch. It is idling at 1200 rpm. Question I have is how long of an idle is it proper to use the high idle?? I have two kids and sometimes stopping at side of road for potty breaks. If I idle for a minute , two, five , etc....
The idling sounds really high. Is this normal?? It just sounds rough on the motor.
The idling sounds really high. Is this normal?? It just sounds rough on the motor.
Postmaster
Joined: Jan 2005
Posts: 4,424
Likes: 12
From: BC Canada
If its sitting much more than 10 minutes, I use high idle. Less than that I dont bother. Mostly for me this is in the winter, in summer I just drive, shut off unless I have been pulling and use low idle for 5 or 10 min before shut down.
Senior User
Joined: Jun 2004
Posts: 139
Likes: 0
From: Breaux Bridge,La.
I just finshed the high idle mod on my 04 6.0 and am satisfied with the results. The sound of the engine @ 1200 RPM does seem load but I don't think it can harm anything. In the business I was in before I retired we used F350s and ran generators off a PTO for hours at a time (some times days) with the idle set at 1150 RPM with no ill effects. Granted these were 7.3 engines. The hours on these engines way over shadowed the milage.
Jäger
Joined: Jan 2005
Posts: 5,491
Likes: 5
From: Northern Arizona
I don't idle my 6.0 much. When I'm towing I have found that by the time I let off to exit the freeway, get onto the side road and get into the fuel station is a least a few minutes, enough to let the turbo cool down. If I'm not towing then I just shut it down and go into the store, restroom or whatever. I guess it would be different if I lived in a cold climate.
Senior User
Joined: Jun 2004
Posts: 139
Likes: 0
From: Breaux Bridge,La.
Originally Posted by MIKE1646
chi6488 what truck do you have?
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Laughing Gas
Joined: May 2006
Posts: 1,192
Likes: 0
From: Oakville, Ontario
Sorry to interupt, but I have a 2007 SD and am trying to wire the same I found the upfitter wire but the access wire is nowhere to be found. I supose the 06 should be the same as the 07. Can you please point me in the right direction.
Headviking
Headviking
Originally Posted by chi6488
Completed the High Idle Mod today using #4 upfitter switch. It is idling at 1200 rpm. Question I have is how long of an idle is it proper to use the high idle?? I have two kids and sometimes stopping at side of road for potty breaks. If I idle for a minute , two, five , etc....
The idling sounds really high. Is this normal?? It just sounds rough on the motor.
The idling sounds really high. Is this normal?? It just sounds rough on the motor.
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Posting Guru
Joined: Jul 2006
Posts: 1,737
Likes: 0
From: Republic of Texas
Look here . . .
Look in the tech folder for pics and instructiions. There are two wires to chose from depending on what you want to do. 
http://dan.prxy.org/Truck/Other/High_Idle/High_idle_mod.html
http://dan.prxy.org/Truck/Other/High_Idle/High_idle_mod.html
Posting Guru
Joined: Jul 2006
Posts: 1,737
Likes: 0
From: Republic of Texas
U R Kidding me right . . .
Originally Posted by Headviking
Found it. I should listen to the wife when she tells me to put on my glasses. But I look cool without READING GLASSES. Thanks again.
Headviking (with reading glasses)
Headviking (with reading glasses)
That's it . . . U Need to look cool stuff up under your dash, trying to find a tiny wire you are trying to put a BUTT connector on, with little or no room to see, move, let alone finish the job in . . . 
New User
Joined: May 2006
Posts: 14
Likes: 0
Completed the High Idle mod yesterday, worked like a champ. I have a 06 PSD and decided to use the Solid Orange PTO wire instead of the BCP wire. Wired it to the first 10amp upfitter switch, #3. I also unplugged, removed and cleaned my EGR valve. I have about 18K on it and wanted to see what it looked like. It was about as bad as expected, not wet, but heavy carbon and black buildup.