High idle on upfitter not working 08' 6.4

[Live2fish58]

Hey guys wanted to see if I could get some help I just tried hooking up my high idle on my 08 6.4 to upfitter #4 I connected the yellow/green wire to the brown. I'm 99% sure I'm doing everything correct. The truck is started in park and the ebrake is to the floor. I havent used butt circuits yet because I wanted to make sure it would work first. If anyone could give me any advice it would be greatly appreciated, thanks.

[skipnay]

Ok what are you trying to do? Mine seems to go into high idle after it runs for 30-60 seconds. Then you have to go hit the brakes and it returns to regular idle. Then after 30-60 seconds again it does it it again until you hit the brake pedal. Is this what your trying to do? Because I'm trying to stop it. LOL

[forddieseldoctor]

Make sure you have the correct brown wire. The one you want is listed in the body builder book as being located above and to the right of the parking brake assembly.

https://www.fleet.ford.com/truckbbas...bb_pdf/349.pdf

[Live2fish58]

Lmao skipnay no it a high idle mod that you use on your upfitter to make the truck high idle when parked...@forddieseldoctor I know it's the brown wire in the bundle next to the upfitter wire I might have the wrong brown but not real sure I'm almost positive I have the right one

[forddieseldoctor]

Use a test light to see if the brown wire turns to hot when you flip the switch. If not then you more than likely have the wrong one. Otherwise try the violet and green wire for switch #3.

[skipnay]

Originally Posted by Live2fish58

Lmao skipnay no it a high idle mod that you use on your upfitter to make the truck high idle when parked...@forddieseldoctor I know it's the brown wire in the bundle next to the upfitter wire I might have the wrong brown but not real sure I'm almost positive I have the right one

Mine does that for free. LOL It's annoying I usually don't let it idle anywhere because of it. 1200-1500 rpm's isn't cool when people are around. It's dam right annoying when everyone knows these trucks are quiet.

[forddieseldoctor]

All of them will ramp up the idle for a short time when they are cold. But some of us want our trucks to stay at the increased rpms for extended times for excessive battery load such as running a winch or for when it's colder as hell and we want heat.

[skipnay]

Originally Posted by forddieseldoctor

All of them will ramp up the idle for a short time when they are cold. But some of us want our trucks to stay at the increased rpms for extended times for excessive battery load such as running a winch or for when it's colder as hell and we want heat.

I started my own thread. I don't want to mess up his thread. I have tried cold, warm, and hot. It doesn't matter it does it constantly an it's a PITA. It will maybe will every once in awhile slow the idle down to 800-1100 rpms but like before as soon as you hit the brake pedal it goes down.

[6.4ford]

Look in ur owners Manuel it will tell u which wire goes to each up lifter switch


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[Beene]

Skipnay - run an up fitter switch to your brake light wire at the pedal switch. It will turn your brake lights on when its on but as long its on the truck won't idle up

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