High Idle mod?

[Wildstreet]

I used the search, found it for the 7.3 and 6.0, but did not see anything on the 6.4. Anyone have a link or something for my 2008? I do have the upfitter switches.

[Moose1908]

Here are the switches:
Your Premiere Source for Ford Truck Parts and Accessories

Here is an install PDF:

https://www.fleet.ford.com/truckbbas/non-html/Q157.pdf

Plus there are a few threads talking about the high Idle in the 6.4L
Hope this was helpfull, you should be able to buy an after market switch instead of the upfitter swithes, just have to choose a mounting point.

[Wildstreet]

my truck came equipped with the upfitter switches....just don't know how to trigger the high idle mode.

[Moose1908]

Originally Posted by Wildstreet

my truck came equipped with the upfitter switches....just don't know how to trigger the high idle mode.

http://www.powerstroke.org/forum/6-4...cs-discussion/

go through these pages, i've seen a few threads in here just for "high Idle", i think there is 11 pages. If you still can't find it than PM me and i will help you but i know it's in there. Good luck!!

[elibenson]

It's really easy. Above the parking brake petal there is two bundles of wires that have been capped at the factory. One has 4 wires, which is for the upfitter switches. There are 2 large and 2 small. The 2 large ones are for switches 1&2, and they have somewhere near 30A for running fog lights, inverters, etc. The other 2 are for 3&4. #3 is a 15A, and #4 is a 10A. I would suggest using the 10A one. The mod doesn't even need that much. A test light will show you which is which.

Now, there is another bundle of wires. This one has about a dozen wires. They are for companies that do body modifications and such. They contain data signals for the speedo, tach, a bunch of stuff. One of them will be labeled SEIC (Stationary Elevated Idle Control). When you apply power to this wire, and the parking brake is set (and in park) it will idle the engine up to 1200 rpm. So connect your upfitter switch to this wire, and presto!

If you want to get fancy, you could put in a potentiometer (variable resistor) in the line between the power and the SEIC wire. It would allow you to dial in the RPM to whatever you want. I forget what size Pot you need. If you only run 12V power to the SEIC wire, it defaults to 1200 rpm.

High idle also tends to cycle your cooling fan while it is active. Even when the engine is not heating up. I think this is to keep it from heating up without any air flow. It also helps the A/C work effectively. Keeps the truck cool on them hot days.

good luck

[wontonrunner]

ok, so now is this high idle different than the high idle that my truck goes into after about 5 minutes of sitting and idling? Or is my high idle a Canadian thing?

Or is this mod for those guys that don't want to wait the 5 minutes?

[Wildstreet]

Thanks guys, but I won't need it up here for hot days. I need it when it is really cold out, to get the truck warmed up. When we head up to the U.P snowmobilling, sometimes we have no place to plug them in.

[wontonrunner]

Originally Posted by Wildstreet

Thanks guys, but I won't need it up here for hot days. I need it when it is really cold out, to get the truck warmed up. When we head up to the U.P snowmobilling, sometimes we have no place to plug them in.

How cold is really cold? They te*****ally don't need to be plugged in until -25 degrees celcius. I have started mine sitting outside in colder but it is a hard pull on the batteries and all the gages in the truck reset because of the power drain...and then it takes a long time of driving to warm it up and it will not warm up at idle...even after 20 minutes of driving and over an hour of idling.

[Wildstreet]

it will get down to -10 - -20 at night. I know it will start, but at those temps I like to keep it plugged in. With/when I had my dodge, we would just start them up and let them run at high idle for about 20 minutes or so, before we would go anywhere. You also need to block off some of the radiator.

[Rotorfixer]

Just a cautionary note, if you have the uplifter SEIC mod, don't leave the switch on while you are driving. It will still cancel all of your emissions systems even though the E-brake is not set. I am on my 6th day of continuous regen now that I flipped the switch back down......

Peter.

EDIT: not sure if this is true....... lol