6.4 High Idle mod - PowerStrokeNation : Ford Powerstroke Diesel Forum
LinkBack Thread Tools Display Modes
post #1 of 1 (permalink) Old 12-24-2009, 03:25 AM Thread Starter
Dzchey21's Avatar
Join Date: May 2009
Location: Wyoming
Posts: 10,531
6.4 High Idle mod

Ok here is a quick run down of how to do the high idle mod.

First locate the wire harness under the dash, near the OBDII port.

The lower part of the harness with the most wires in it, is the pto harness, You can see in the picture that everything is labeled, you want to find the PTO wire, on my truck its labeled as yellow with a green chaser.

Then i used the #4 upfitter switch to tie into it which in this case the wire is brown. I chose the number 4 switch because it is the lowest amperage of all of the switches (5 amp)

As you can see i just used a butt connector to make the connection, you dont even need to put a jumper wire in, you can just tie the two wires together and your good to go.

To make the high idle work you MUST have the park brake on and the truck has to be in Park. Flip your switch and it should high idle in a couple seconds.

If you do not have upfitter switches in your truck its the switches in your truck, then you will either have to wire a switch up yourself that provides 12v to the pto wire OR you can just hook a hot wire to the pto wire and leave it all the time (not recomended) If you chose to do it this way, any time you are in park with the park brake on it will high idle.

Hope this helps shoot me a pm with any questions.

couple trucks one fast one not

Last edited by Dzchey21; 12-24-2009 at 11:00 PM.
Dzchey21 is offline  
Closed Thread
Gear in this thread - Powered by O'Reilly Auto Parts

Quick Reply

Register Now

In order to be able to post messages on the PowerStrokeNation : Ford Powerstroke Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome