DIY FAST IDLE 99-24v
 

I built my own fast idle with a 10K ohm linear potentiometer (similar to a volume knob) and wired it parallel to the APS (which is also a potentiometer) It is wired with a switch to disable the circuit, and a bright red light so my wife doesn't try to drive with the fast idle switched on. Basically it fools the computer into thinking the accelerator pedal is slightly open. I have good idle control from 900 to 2000 rpm. I put 2K ohm resistor inline so that the fast idle could not take the throttle to wide open position. The only problem is that the Check Engine light comes on. I think the extra wiring is dropping the idle voltage slightly below spec. Has anyone else attempted this?

Re:DIY FAST IDLE 99-24v
 

I built one simular for my F-350. I wired the ground to the parking brake so that it wouldnt activate unless the brake was set for safty reasons.<br><br>The only problem I had was that as the inside of the cab warmed up the resistance to the pot changed and increased the idle. So I would have to lower it as things got warmer. Once a sustained temp was reached it was very stable.

Re:DIY FAST IDLE 99-24v
 

Update, Check Engine light went out, must have just triggered a trouble code when I wired the unit in, seems to trigger a fault code when voltage gets too high, current setup gives excellent fast idle control from idle to 1500rpm.

Re:DIY FAST IDLE 99-24v
 

[quote author=gitchyboy link=board=4;threadid=9850;start=0#94505 date=1043165871]<br>Update, Check Engine light went out, must have just triggered a trouble code when I wired the unit in, seems to trigger a fault code when voltage gets too high, current setup gives excellent fast idle control from idle to 1500rpm.<br>[/quote]<br><br>Do you have any diagrams or pictures of this you would be willing to share? Sounds like a cool project.

Re:DIY FAST IDLE 99-24v
 

[quote author=Jack Thorpe link=board=4;threadid=9850;start=0#94512 date=1043166538]<br>[quote author=gitchyboy link=board=4;threadid=9850;start=0#94505 date=1043165871]<br>Update, Check Engine light went out, must have just triggered a trouble code when I wired the unit in, seems to trigger a fault code when voltage gets too high, current setup gives excellent fast idle control from idle to 1500rpm.<br>[/quote]<br><br>Do you have any diagrams or pictures of this you would be willing to share? Sounds like a cool project.<br>[/quote]<br><br>Jack, I think it would be a WARM project as its for warming the engine. LOL<br>I am interested in this as I see we have a -35 windchill today and much colder tonite. :'(

Re:DIY FAST IDLE 99-24v
 

[quote author=CTD/359 link=board=4;threadid=9850;start=0#94558 date=1043172369]


Jack, I think it would be a WARM project as its for warming the engine. LOL
I am interested in this as I see we have a -35 windchill today and much colder tonite. :'(
[/quote]



Aww.... just Duct Tape (Penguin Tape?) a couple-a birds to the lower radiator hose.(maybe a Blue sheep tucked in around the fuel filter).

Re:DIY FAST IDLE 99-24v
 

Which wire at the APPS did you connect this all into??? We were looking into doing this as well this past weekend but we were debating about the wires...<br><br>Thanks,