Can I tell if my truck has high idle in warm weather?

[02cumminsdude]

Just like the title says... it's summer and hot here. I've only owned the truck since spring when it never dropped below 40 out, I would like to figure this out BEFORE the cold weather hits this year if possible. I go to the gym 4-5 times a week and it's only a 2 mile drive so I am considering leaving my truck run while working out to prevent possible problems due to frequent short trips and not warming up properly. If I don't have it I will probably do the high idle mod so I can keep the motor warm and EGT's above 300. My truck stays fairly cool even in 80-90 degree weather at idle... I rarely see EGTs over 270 once it's sat for a minute or two, no matter how warm the motor is. Don't know if that's good or bad

[98whitelightnin]

On a cold motor (140) or below, you can get a 56k ohm resistor and put it in the iat sensor to fool the computer to thinking its around 27 degrees outside.

[Mopar1973Man]

Correct... You insert a 56K ohm resistor into the plug of the IAT lead. It should enable high idle 3 cylinder.

[02cumminsdude]

Sounds easy enough, just gotta get some resistors. Thanks guys

[02cumminsdude]

Hey guys where can I find some of these resistors? I went to Pep Boys and Ace Hardware, no luck. There is a Radioshack near me, would they have them? I've seen them online so maybe that will be easiest source?

[Mopar1973Man]

Radio Shack should have them... That's where I've bought them in the past for building the high idle kits.