High Idle & MPG Fooler

[Mopar1973Man]

Just a thought....why couldn't I use a manual idle cable. Like a choke cable just to get high idle,as you can see I have too much time on my hands here.I also saw a plug and play 3 speed idle box,don't know if it will work on the cummins yet. Gonna call and ask this week if I remember.

Because of safety factors.

With the high idle flash and box you still have all the safety system in place. The high idle will cancel with...

[*]Touching the throttle

[*]Touching the brake pedal

[*]Placing the trans in gear (auto)

[*]Speed above 0 MPH

[*]Coolant above 170*F

With a choke cable to hand throttle you can't use the exhaust brake as a warm up aid because the throttle is above 0% so exhaust brake is canceled. (virtual loading)

Then also there is no 3 cylinder mode with choke or hand throttle which creates more heat than 6 cylinder. (virtual loading)

[SNKEBIT]

Mike, Did you ever come up with a schematic drawn out? I think I found one on the CF, but it's a little vague and only shows one switch for all the functions.

[Mopar1973Man]

[*]High Idle - IAT/ECT fooler setup

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[SNKEBIT]

Thanks Mike!!! Can't get any clearer than that. Is there a way to get the MPG fooler working in that scenario also?

[Mopar1973Man]

There is a way to daisy chain the MPG fooler into the IAT setup. I'll have to draw that one..

[SNKEBIT]

There is a way to daisy chain the MPG fooler into the IAT setup. I'll have to draw that one..

Because, you ARE that good!!!!!!

[Mopar1973Man]

Because, you ARE that good!!!!!!

Hand drawn but it will work...

[safn1949]

Looks doable to me...so how do I tell if the ecm has been flashed to enable the high idle as my scan tool is for my 94 Explorer and will not read the CTD.?

[Mopar1973Man]

Stuff a resistor in the IAT plug and fire it up on a cold start (less than 140*F coolant temp)

[safn1949]

Thanks for all the info....it is 12 f outside so I should get at least 6 cyl high idle when I start the old girl up,lets give it a whirl.

[Mopar1973Man]

Actually there is a goof on the 3/6 cyl mode switch in the drawing.

[safn1949]

Started her up and it never changed the idle,900 rpm at 20 f. Being new to this what should the idle be normally and on high idle?

[Mopar1973Man]

Started her up and it never changed the idle,900 rpm at 20 f. Being new to this what should the idle be normally and on high idle?

Best example.

http-~~-//youtu.be/il7iJCKfmaE

[SNKEBIT]

Actually there is a goof on the 3/6 cyl mode switch in the drawing.

wtf??? Now I have to start all over.................................

[Mopar1973Man]

wtf??? Now I have to start all over.................................

Just look at the original switch layout... You'll see my goof... :banghead:

[SNKEBIT]

Just look at the original switch layout... You'll see my goof... :banghead:

Saw it. Two resistors on the 3/6 mode switch ran back on themselves. bad mike.

[SNKEBIT]

Mike, in your drawing, the resistors go in this order?: 3/6 mode gets the 39k &56k resistors. mpg fooler gets the 3.3k resistor, correct?

[Mopar1973Man]

3.3k ohm is ECT fooler.2.2k ohm is the MPG fooler.

[SNKEBIT]

You have 3 resistors in your drawing....

[Mopar1973Man]

The hand draw the MPG fooler should be a 2.2kΩ. (single resistor)The IAT mode selector should have two 39kΩ and 56kΩ