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Old 02-01-2014, 10:20 PM   #21 (permalink)
Fmiser
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Originally Posted by ScottyStills View Post
Not to jack a thread, but I've been pondering the manual high idle myself. It occured to me though that if I don't intend to use my cruise control any more (truck is mostly an off road toy) would it be possible to hot wire the servo to hold the throttle?

Thinking that might give a little more control range. Thoughts?
It won't be trivial.

My car uses vacuum for the cruise control, but whether it's vacuum or electric servo, it won't work to just "apply power". The cruise is a "control loop" - that is, the speedometer is monitored as as it deviates from the target either more or less fuel is added to get the speed back to the target. I have often pondered trying to rig a tachometer feed rather than a speedometer feed as the speed sense - but I've never looked deep enough to see it it would be practical. Likely it will involve multiplying or dividing the output of the tachometer so it looks like what the speedometer would send.

You could just try holding the fuel feed at a set position, but usually that doesn't work very well. It really needs a feedback control loop, especially once the engine speed gets much above a fast idle. Normally aspirated engines like the 6.2 will work better with the fixed position fuel feed than a turbo-changed engine will.

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Old 02-01-2014, 10:22 PM   #22 (permalink)
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ok so i got the diode and the wiringbdone. now all I have to do is test it.

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Old 02-02-2014, 07:01 AM   #23 (permalink)
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Originally Posted by caraudiochef View Post
ok so i got the diode and the wiringbdone. now all I have to do is test it.
please take pics im interested in doing this myself
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Old 02-02-2014, 09:41 AM   #24 (permalink)
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found this pic which pretty much shows how i wired it. ( hopefully it shows as im ttying to do this from my phone)
The two illuminated bulbs would be the cold advance and the high idle enwrgized
While the single lit bulb would just be for the high idle

Ian
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Old 02-03-2014, 06:07 PM   #25 (permalink)
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The Green wire is for the Cold advance/idle
The Blue wire is for just the High Idle, under the heatshrink is the Diode.
The Glow plug switch was removed so i could put my temp sensor in for my electric fan.

ps; sorry the pic is so big. Ill try to shrink them down next time
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File Type: jpg High Idle 2.jpg (100.7 KB, 51 views)
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Old 03-03-2014, 03:41 AM   #26 (permalink)
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Did this work?

Looking at it, my mind says the blue wire is on the wrong side of the diode.

I dug this up as I suddenly remembered this should be in the FAQ's
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well to make your pump retarded, you could let it hang out with me for a day
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Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
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Last edited by Diaric; 03-03-2014 at 03:56 AM.
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Old 03-03-2014, 08:29 AM   #27 (permalink)
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I haven't had a chance to test this yet. I had a bunch of other wiring i needed to take care of first. The blue wire is actually soldered on the high idle solenoid side, i just have the blue wire next to the green for some added support. Im almost done with the rest of my wiring so ill bevable to check it soon.
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Old 03-03-2014, 01:00 PM   #28 (permalink)
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Quote:
Originally Posted by caraudiochef View Post
I haven't had a chance to test this yet. I had a bunch of other wiring i needed to take care of first. The blue wire is actually soldered on the high idle solenoid side, i just have the blue wire next to the green for some added support. Im almost done with the rest of my wiring so ill bevable to check it soon.
Excellent.
Thanks for getting back so quick, it should be fine.
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Quote:
Originally Posted by 4320diesel View Post
well to make your pump retarded, you could let it hang out with me for a day
Quote:
Originally Posted by Hawkstrong View Post
Diaric wins thread derailment......
Quote:
Originally Posted by High Sierra 2500 View Post
Yeah Diaric, I gotta say, I'm afraid I'm going to have to give you an official warning on that.
6.2 FAQ's AND ANSWERS Click Here
My Restoration Thread Click Here
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Old 03-03-2014, 01:06 PM   #29 (permalink)
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Originally Posted by Diaric View Post
Looking at it, my mind says the blue wire is on the wrong side of the diode.
Yeah, I thought so too. At first. But the blue wire doesn't connect to the diode where it enters the heatshrink. It passes over the diode and the connection lump can be seen through the shrink at the other end.
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Old 03-03-2014, 05:47 PM   #30 (permalink)
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Originally Posted by Diaric View Post
Excellent.
Thanks for getting back so quick, it should be fine.
Thanks I appreciate all the help you and this forum have given me. Once i get my new switches installed (glowplugs and the idle's) i'll post some pics and maybe a video. Thanks again.

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