6.4L Power Stroke Engine and DrivetrainDiscussion of the 6.4L Power Stroke diesel engine and drivetrain in the 2008-Up Super Duty trucks. No gas engine discussion allowed except on transmissions and drivetrain that pertain to all models. Please confine discussion of topics in this forum to those items that are specific to the 6.4L Power Stroke engine.
Ford has included logic for elevated idle control in the powertrain control module (PCM) since the 2005 model year. It's called the stationary elevated engine idle speed control system (SEIC). But you have to hook it up to make it work.
The SEIC is not just for power take off control. It's also used to elevate the idle RPM for battery charge protection, or for extended idling in hot or cold weather so the heater/ventilation/air conditioner (HVAC) systems will do a better job.
I made the connection to activate the SEIC using one of the Auxiliary Switches. It is a very simple connection (two wires), if the default RPMs (1200) will be used. Thanks SmokeyWren for the useful information.
__________________ 2008 F250 FX4, CC, SRW, SWB, 6.4L Diesel
Two tone paint Oxford White w/Dark Shadow Grey lower accent, ESOF, Stabilizer Package, TowCommand system,
20 x 9 Black XD Revolver w/Nitto Terra Grapplers 295/60/20, Dieselsite 4WD ESOF Hose Kit,
H&S Mini Maxx, SDP Downpipe/CAT/DPF Delete, Banks Monster Exhaust Dual-Tip, Turbo Socks, DEI Exhaust Wrap (half downpipe),
Banks RamAir Intake, Dieselsite Boots Kit, MBRP Intercooler Tube, Flo-Pro EGR Delete Kit,
Power-Stroke Connection CCV System, Dieselsite Coolant and Transmission Oil Filtration Systems, Fumoto Oil Drain Valve
Last edited by Caribe_Pick_up; 07-31-2009 at 12:50 PM.
Ford has included logic for elevated idle control in the powertrain control module (PCM) since the 2005 model year. It's called the stationary elevated engine idle speed control system (SEIC). But you have to hook it up to make it work.
The SEIC is not just for power take off control. It's also used to elevate the idle RPM for battery charge protection, or for extended idling in hot or cold weather so the heater/ventilation/air conditioner (HVAC) systems will do a better job.
I did the high idle mod but i want to add a potentiometer, after looking at that diagram it show the green pto_rpm wire being grounded which I understand but what I dont understand is it says pwr grd 4.75k, what does the 4.75k mean, do i need to add something to the ground or something
Just to help some of those who don't like looking at wiring diagrams...Hook one of the switches (in my case #4 closest to the passenger side - brown wire) and the yellow/green wire together. You'll have to set your parking brake for it to elevate the idle speed. Without the parking brake engaged, it will disable the SEIC.
Mod List: -51 gal RDS direct fill auxillary fuel tank -SEIC High Idle -H&S Black Maxx Running the Hot Damn +300 Tune -S&B Dry CAI -Diamond Eye 5" Turbo Back Race Exhaust -Custom 10" Sub Box Behind the Center Console -Coastaltech SYNC-LP1 Lockpick -Westin Bull Bar -Westin Taillight Guards -Recon LED Smoked Dodge Cab Marker/Clearance Lights -Billet Fender Vent Inserts -Zone Offroad 4" Lift -20x10 BMF Novakane 8's -35x12.50r20 Nitto Trail Grapplers
-'11 Super Duty Rear Seat Cargo Tray w/410W Power Inverter
I did the high idle mod but i want to add a potentiometer, after looking at that diagram it show the green pto_rpm wire being grounded which I understand but what I dont understand is it says pwr grd 4.75k, what does the 4.75k mean, do i need to add something to the ground or something
That would likely be a 4.75K OHM resistor? (To get the right RPM idle?) These trucks are TBW so the odds are they just tap into the throttle at the PCM? That would be the resistance through the pedal at 1200 rpm I guess.
__________________
Jim T.*48* SLAPS Co-Founder, 30.8 yrs RETIRED UAW 6/01/06, Now an ART (Specialists Flight Chief) with the USAFR 414th MXS Seymour Johnson AFB. My pics!'03 Dually pics!, New truck, 2011 F-350 SRW LB CC. White Platinum Lariat! 4x4
Just to help some of those who don't like looking at wiring diagrams...Hook one of the switches (in my case #4 closest to the passenger side - brown wire) and the yellow/green wire together. You'll have to set your parking brake for it to elevate the idle speed. Without the parking brake engaged, it will disable the SEIC.
Just did mine, 3" of 16 gauge wire 2 butt connectors and I have fast idle.
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2008 F250 FX4, CC, SRW, SWB, 6.4L Diesel
Attached are the two documents that I used to do the connection to activate the SEIC using an Upfitter Switch.
Linear Mode
