Fast idle!!!!! fast warm ups!!!!

[MotorManRod]

Hey guys, was just messin around behind my glove box and found some stray wires comming from my ecm, so me being a electronics junky had to look into it and found that pins 7 and 8 on the middle ecm connector are factory fast idle wires if you gnd. 7 its 1200 rpm if you gnd 8 its 1400 rpm if you gnd both its 1600 rpm. dont know if you guys know this so i thought id pass it on any questions feel free to ask. have a good day!!! MMR

[cudacoupe68]

Straight from www.kennedydiesel.com

TECH TIPS
Fast Idle Setup
Electronic 6.5's
All electronic injected "drive by wire" 6.5s have provision for a fast idle for PTO or other use. This is particularly handy for warmup (heater) cool down (AC) as well as being easier on the engine if extended idle times are required.
The installation is quite simple:

94/5 models
Remove the glove box
Slide the PCM forward from its mounting behind the glove box. "I prefer to remove the PCM entirely"
Remove the center connector, by squeezing connector locks and pulling the pink 24 pin connector
Remove the lock for row A on top of the connector which corresponds to row B (A is the top row & B is the bottom row, the bottom row is on the flat side)
Crimp an 18 ga. wire to a terminal pin (p/n12089649) using a Packard Electric crimp tool (p/n 6285847) This tool is available from Pioneer-Standard Electronics @ 1-800-PACKARD
Insert the pin with the attached 18-ga. wire in cavity A6(the 6th hole from the right in the back, "wire side") Make sure the terminal pins lock into the connector, now reinstall the connector in the PCM
Attach the wire to a switch (user furnished) supplied with 12v with ignition on.
NOTE: this will provide 1075 RPM when switch is activated. The Fast idle should revert to base idle when the brake is pressed or if the selector is put into gear. Upon returning to park and releasing the brake, the fast idle will resume.

NOTE: Some trucks do not return to base idle uopn application of the brake. Be sure to verify this in a safe area.

'96 and up
Remove the glove box
Slide the PCM forward from its mounting behind the glove box. "I prefer to remove the PCM entirely"
Remove the center connector, by squeezing connector locks and pulling
Remove the lock on on top of the connector which corresponds to row B (Ais the top row & B is the bottom row, the bottom row is on the flat side)
Crimp one or two (depending on number of speeds desired) 18 ga. wire(s) to a terminal pin (p/n12089649) using a Packard Electric crimp tool (p/n 6285847) This tool is available from Pioneer-Standard Electronics @ 1-800-PACKARD
Insert the pin that will be connected to switch #1 with the attached 18-ga. wire in cavity B7 (the 7th hole from the right in the back, "wire side") Insert the pin that will be connected to switch #2 with the attached 18-ga. wire in cavity B8 ( the 8th hole from the right in the back "wire side") Make sure the terminal pins lock into the connector, now reinstall the connector in the PCM
Attach wire(s) to a switch (user furnished) connected to chassis ground



1070 RPM- ground pin B8
1360 RPM-ground pin B7
1600 RPM- short B7 and B8 together


Note:
The Fast idle will revert to base idle when the brake is pressed or if the selector is put into gear. Upon returning to park and releasing the brake, the fast idle will resume.



For more information E-mail: john@kennedydiesel.com

©2008 Kennedy Diesel - All Rights Reserved

[Husker 6.5]

The multiple fast idle speeds were an option for use with PTO equipped 3500, 4500 and 5500 HD models to set PTO output speed for running hydraulics for winch, boom, dump bed, etc. Also works well for fast idle for quicker warm up, but your fuel mileage will be affected.