OK, heres the scoop.... I got an 04SD6.0 that I want to do the High Idle mod (Kick rpm up to 1200 at the flick of a switch), I found ALL of the information that i needed, LOTS of Ppl trying this out in many different ways...

Here's the one way...
<table cool="cool" gridx="16" gridy="16" showgridx="showgridx" showgridy="showgridy" usegridx="usegridx" usegridy="usegridy" border="0" cellpadding="0" cellspacing="0" height="4600" width="817"><tbody><tr height="16"></tr><tr height="16"><td colspan="2" rowspan="17" height="1835" width="15">
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</td> <td height="16" width="1"><spacer type="block" height="16" width="1"></td> </tr> <tr height="16"> <td colspan="4" rowspan="3" xpos="240" align="left" height="64" valign="top" width="304"></td> <td height="16" width="1"><spacer type="block" height="16" width="1"></td> </tr> <tr height="21"> <td content="content" csheight="37" rowspan="2" xpos="176" height="48" valign="top" width="64">The</td> <td content="content" csheight="37" colspan="2" rowspan="2" xpos="544" height="48" valign="top" width="80">Mod</td> <td height="21" width="1"><spacer type="block" height="21" width="1"></td> </tr> <tr height="27"> <td content="content" csheight="55" colspan="3" rowspan="3" xpos="16" height="83" valign="top" width="128">Return to F-350 Page Disclaimer
</td> <td height="27" width="1"><spacer type="block" height="27" width="1"></td> </tr> <tr height="16"> <td content="content" csheight="16" colspan="6" xpos="176" height="16" valign="top" width="432"> For 2005-06 Elevated Idle Mods CLICK HERE
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</td> <td height="16" width="1"><spacer type="block" height="16" width="1"></td> </tr> <tr height="40"> <td content="content" csheight="32" colspan="10" xpos="144" height="40" valign="top" width="500"> Please note, this modification will not work on trucks equipped with manual transmissions.
Click HERE for details.
</td> <td height="40" width="1"><spacer type="block" height="40" width="1"></td> </tr> <tr height="99"> <td content="content" csheight="96" colspan="16" xpos="16" height="99" valign="top" width="768">Well, I don't know if you can really call it a modification since Ford provides all the info. See the 2003 Body Builder Layout book, page 199 (this is a PDF file so you'll need Adobe Acrobat reader to view this file). Ford provides truck body builders and upfitters a way to alert the PCM that PTO (Power Take-Off) operations are running. When 12 volts is applied to wire 322 (LB/Y), which runs directly to the PCM, the PCM elevates the idle to 1200 rpm. High idle also comes in handy on cold winter days for warming up the engine and preventing wet stacking.</td> <td height="99" width="1"><spacer type="block" height="99" width="1"></td> </tr> <tr height="400"> <td colspan="2" rowspan="2" height="480" width="80">
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</td> <td height="400" width="1"><spacer type="block" height="400" width="1"></td> </tr> <tr height="80"> <td content="content" csheight="64" colspan="13" xpos="96" height="80" valign="top" width="608"> You provide the switch, wire, splices and about 45 minutes. Ford provides the two wires you'll need to hook together. The indicator light is optional, it's not needed for the circuit to work. Also note, a LED can be used along with a series resistor of the correct size.
</td> <td height="80" width="1"><spacer type="block" height="80" width="1"></td> </tr> <tr height="32"> <td colspan="16" xpos="16" align="left" height="32" valign="top" width="768"> <hr size="1" width="768"> </td> <td height="32" width="1"><spacer type="block" height="32" width="1"></td> </tr> <tr height="384"> <td colspan="3" rowspan="2" height="480" width="128">
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</td> <td height="384" width="1"><spacer type="block" height="384" width="1"></td> </tr> <tr height="96"> <td content="content" csheight="80" colspan="11" xpos="144" height="96" valign="top" width="512">Wire 322 is a light blue wire with a yellow strip. It is located in the customer's upfitting wires bundle directly behind the parking brake release (note the release cable in the upper right corner). It will be taped in with the other wires. In this picture the wire is pulled out of the bundle. It's capped with tape as is wire 294.</td> <td height="96" width="1"><spacer type="block" height="96" width="1"></td> </tr> <tr height="32"> <td colspan="17" xpos="15" align="left" height="32" valign="top" width="769"> <hr size="1" width="768"> </td> <td height="32" width="1"><spacer type="block" height="32" width="1"></td> </tr> <tr height="384"> <td rowspan="6" height="797" width="1">
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</td> <td colspan="10" xpos="144" align="left" height="384" valign="top" width="500"></td> <td colspan="3" rowspan="3" height="560" width="140">
</td> <td height="384" width="1"><spacer type="block" height="384" width="1"></td> </tr> <tr height="112"> <td content="content" csheight="96" colspan="9" xpos="144" height="112" valign="top" width="496">Wire 294 is a white wire with a light blue stripe. It is located on the right hand side of the driver's area. Locate the OBD II connector. Follow the wire bundle off the back side of the connector about 6 inches up. Wire 294 may be sticking out as in this picture, or it may not be. Look around, it there somewhere.</td> <td rowspan="2" height="176" width="4">
</td> <td height="112" width="1"><spacer type="block" height="112" width="1"></td> </tr> <tr height="64"> <td content="content" csheight="48" colspan="9" xpos="144" height="64" valign="top" width="496">Use a toggle type switch of your choosing and mount it in whatever location works for you.</td> <td height="64" width="1"><spacer type="block" height="64" width="1"></td> </tr> <tr height="16"> <td colspan="16" xpos="16" align="left" height="16" valign="top" width="768"> <hr size="1" width="768"> </td> <td height="16" width="1"><spacer type="block" height="16" width="1"></td> </tr> <tr height="125"> <td colspan="2" xpos="0" align="left" height="125" valign="top" width="15">
</td> <td content="content" csheight="112" colspan="17" xpos="16" height="125" valign="top" width="784">But of course the standard disclaimer applies. I'm not responsible for want you do with the info or it's accuracy. In other words if you use this site to service your truck and break or screw something up, don't come crying to me about it. You, the viewer, are totally responsible for want you do with the information on this site. If you can't live with that, then don't view it or use it. This site should only be used as a reference and introduction of the 6.0L Power Stroke diesel engine. On the other hand, if you see an error or have a comment e-mail me at: dan@prxy.org
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</td> <td content="content" csheight="96" colspan="17" xpos="16" height="96" valign="top" width="784">OK, disclaimer blah blah blah........ I did this mod on my 2003 F-350 and it worked. When the switch is turned on the idle slowly climbs to 1200 rpm and holds there. When the service brake is applied the idle quickly drops back to 650 rpm. As far as I know, this mod should also work on a 2004 MY truck, but I have not confirmed this to date. Good luck and say no the wet stacking.</td> <td height="96" width="1"><spacer type="block" height="96" width="1"></td> </tr> <tr height="16"> <td colspan="17" xpos="15" align="left" height="16" valign="top" width="769"> <hr size="1" width="768"> </td> <td height="16" width="16">
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</td> <td content="content" csheight="80" colspan="17" xpos="16" height="104" valign="top" width="784">Installed AIC circuit. I chose to use a micro toggle switch. The switch has a build it LED. Unfortunately the switch couldn't be used to connect wire 294 to wire 322 directly. When the switch was open, their was about 8K Ohms between the poles. My idea of a switch is it should have a lot more resistance then 8K Ohms when it's open. So I used the switch for what it was designed for, to energize the coils of a relay.</td> <td rowspan="14" height="1983" width="16">
</td> <td height="104" width="1"><spacer type="block" height="104" width="1"></td> </tr> <tr height="304"> <td colspan="8" xpos="16" align="left" height="304" valign="top" width="500"></td> <td colspan="9" rowspan="2" height="368" width="284">
</td> <td height="304" width="1"><spacer type="block" height="304" width="1"></td> </tr> <tr height="64"> <td content="content" csheight="48" colspan="8" xpos="16" height="64" valign="top" width="500">Wire 294 (WH/LB) comes off of fuse 29, Customer Access. It's a 10 amp fuse on the right hand side of the fuse box.</td> <td height="64" width="1"><spacer type="block" height="64" width="1"></td> </tr> <tr height="16"> <td colspan="17" xpos="16" align="left" height="16" valign="top" width="784"> <hr size="1" width="784"> </td> <td height="16" width="1"><spacer type="block" height="16" width="1"></td> </tr> <tr height="32"> <td content="content" csheight="20" xpos="16" height="32" valign="top" width="64">Results:</td> <td colspan="10" height="32" width="544">
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</td> <td height="32" width="1"><spacer type="block" height="32" width="1"></td> </tr> <tr height="256"> <td colspan="11" xpos="16" align="left" height="256" valign="top" width="608"></td> <td height="256" width="1"><spacer type="block" height="256" width="1"></td> </tr> <tr height="32"> <td content="content" csheight="20" colspan="10" xpos="16" height="32" valign="top" width="592">Normal idle is around 650 rpm.</td> <td rowspan="2" height="256" width="16">
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</td> <td height="224" width="1"><spacer type="block" height="224" width="1"></td> </tr> <tr height="128"> <td content="content" csheight="112" colspan="4" xpos="432" height="128" valign="top" width="192">Transmission in neutral or park and service brake off.
Press the little button on the dash and........
</td> <td height="128" width="1"><spacer type="block" height="128" width="1"></td> </tr> <tr height="256"> <td colspan="11" xpos="16" align="left" height="256" valign="top" width="608"></td> <td content="content" csheight="240" colspan="6" xpos="624" height="256" valign="top" width="176">Hey, how did you get the odometer to display the Rpm? Read the Odometer Trick.
</td> <td height="256" width="1"><spacer type="block" height="256" width="1"></td> </tr> <tr height="61"> <td content="content" csheight="48" colspan="10" xpos="16" height="61" valign="top" width="592">The idle will slowly moves up to 1,200 rpm. Step on the service brake pedal and it will fall back to 650 rpm.</td> <td colspan="7" height="61" width="192">
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</td> <td content="content" csheight="198" colspan="17" xpos="16" height="211" valign="top" width="784">2003 Body Builders Book Page 194................ b. "Elevated Idle Feature": this feature is inherent in the powertrain control modules of diesel engine vehicles ordered with "Transmission Power Take-Off Provision". Activating the Ford "PTO Circuit" will automatically elevate the engine idle to 1200 rpm in "PARK" or "NEUTRAL" regardless of the parking brake being set.
This feature does not require use of the Auxiliary Idle Control option or APCM module.
This feature is not available for manual transmission.
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Now heres the Other.....
OK, as promised I did set up my '04 Friday, but couldn't get on here to tell you all about it. Anyhow.... mine does NOT have the orange wire as the '05's do. The '04 uses a blue wire w/ yellow stripe as an input to allow throttle controls. When installing a PTO, a supplied relay closes the circuit between this wire and a signal input from the white wire w/ light blue stripe from the Body Builder customer access wires above the throttle pedal. This wire is the only loose wire hanging out of this bundle so it is very obvious, also the bundle is marked "customer access wires (see body builder book for instructions)". The blue wire w/ yellow stripe is a little harder to identify because there is a green wire w/ yellow or white stripe just beside of it coming from the same bundle. This bundle is immediately above the parking brake and also contains the customer access wires that pass through the firewall, so be sure to get the blue wire with the yellow stripe ONLY. When installing a PTO, like I said, a relay connects these two circuits when the PTO switch is turned on. However, all of our trucks have the wires and programming just not the hole in the tranny. If you use a simple toggle switch to close this circuit and have all other requirements met; park brake set, foot off brake and throttle, trans. in neutral, etc.... then turning this switch on will set your engine RPM's at 1200. So, I know this looks like alot, but really it took me all of 8 minutes and most of that was switch install and wire connecting. If I could post attachments I would give you some pictures, but alas I cannot. Hope this makes it easier and answers questions for us '04/'03 guys.

The only difference I can see between the two is that the first guy used a switch to operate a relay which then sent power to wire #322..... Is this the safer way to do this, or can I use any "on-off" Toggle without the relay and be problem free..... HELP!!!!


By the way, this High Idle thread is AWESOME!!!!!!!!!!!!! Haven't found one easier to read!!!!!

 

I went the down and dirty way, cheap toggle switch wired up in 20 minutes and it worked first time.

 

Thanks for the links - subscribed. Good thread.

 

The only time I use a relay, is when I'm running high amps to an item, and want low amps, at the switch. The PCM requires minimal amps (<1 amp) to go into HIC

That been said, I wired one of my 10 amp upfitter switches direct to the PCM wire. It's been working fine for 5 years.

Good luck

 

I wouldn't use a relay. Its a low current control signal, so there is no need for it. Also, some cheaper relays without snubber circuits can have turn-off voltage spikes which can damage delicate circuitry.

 

Sorry guys new to this... What does "Subscribed" Mean???

 

When you comment in a thread, you are essentially 'subscribed' to that thread forever - unless you remove the subscription from within the control panel. That way, I can go back into my User Control Panel and find the information I need, without searching the whole universe for a thread I saw a while ago about the high idle mod, or some other piece of info I find interesting.

 

when do u guys actually use your high idle mods????? kinda confused about y and when to use it

 

Its good to use if you have to idle for long periods of time. I don't idle mine long, so I haven't done it. When the engine is cold the PCM will increase idle automatically.

 

It does increase idle speed, but only when the engine is rediculously cold. Even when the PMC isn't high-idling, the engine can still be "too cold" and it can still wet-stack.

 

That is true, but like I said, I don't idle mine much so that's not an issue. The only time I idle for more than a couple minutes is when its cold enough for the PCM to kick up the idle and I usually take off as soon as it slows back down.

 

I have been thinking about doing this to my 04. Thanks for the information

 

when to use it? when jumping some one else off, when running into the store and keeping ac blowing cold,when running into same store one week out of the year and keeping heater going. my 07 only works with the parking brake on. I could have saved the switch and just straight wired it.

 

I live in Alberta, Canada, and just this winter the cold reached a terrible -52'Celsius, thats right not Fahrenheit Celsius!!!!!

I really want this mod so I don't have to rely on the PCM to auto Idle my truck..... Sometimes it doesn't seem to idle high enough for it to do any good....

Thanks for all of your help guys,really appreciate it!!!!1

 

I have a 2003 f350 with a 6.0l and this mod works awsome, It should come installed at the factory in Canada cause it is -35c plus wind right now and i get no heat in the cab at an idol. Thanks guys for all the advice, this forum rocks.