2003 Silverado, Hi Idle iinstalled. Yesterday it was 4 degrees here in Indiana. When I pressed the set on the cruise control the engine stumbled, like the fuel was shut off. Also I had to press this button several times and the speed did not increase until I hit the resume button. I haven't seen any other posts like this either it works, well they all seemed to work just as they were supposed to. It doesn't happen all the time just when I am trying to show it to someone.


Any Ideas?http://www.dieselplace.com/forum/smileys/Ermm.gif

Don't show it to anyone! That kinda stuff always happens to me. If you kick on the high idle when the engine is real cold, it will stumble a bit, just like if you got heavy on the pedal. I only use mine to keep it warm, the 1200 and 1800 speeds of the 03 are a little high for warming. I would check the wire to make sure it's not damaged and maybe grounding or loose. If it's not coming on after you push the set button, you could have one or more of many problems. It sounds like something is loose though. Hope this helps...

Ox

For the first time I use my high idle after starting the truck, I have to press either but 2x before it works. Now after I press it the first time, my idle jumps up 25-50 rpm & then drops back back to normal idle speed. (feels liek a tiny rev) Then when I press it a second time the rpm will go up to the proper level.


Then every time I press either button afterwards it works fine until I turn the truck off & take the key out. The same thing would happen if I were to put the key back in & try it again. Anyone else have this experience?

It won't go higher than the first level till she warms up slightly. At least that's what mine does.

hoot, your 01 has a little different ECM and programing than the 03 in question, so it probably acts different.

I don't have a high idle installed on my 03, but I noticed this week that when I sit in the truck with my foot on the accelerator to try to hold a 1200 rpm fast idle to help with warm up and ice thaw, the engine computers "try" to ignore my right foot request and take the idle right back down to 800 rpm. Then if I give more pressure, it'll go a little faster, and then finally I can get it up to 1200 and hold it there. There must be computer control that tells this engine to idle at 800 even if you hold a little pressure on the go pedal. Check it out.


Jim

For the first time I use my high idle after starting the truck, I have to press either but 2x before it works. Now after I press it the first time, my idle jumps up 25-50 rpm & then drops back back to normal idle speed. (feels liek a tiny rev) Then when I press it a second time the rpm will go up to the proper level.


Then every time I press either button afterwards it works fine until I turn the truck off & take the key out. The same thing would happen if I were to put the key back in & try it again. Anyone else have this experience?





Mine does the same thing as well. I have never had any problems using my high idle right down to -2F. I fired the truck up, let it sit for 30 seconds, hit set twice and idle went up to 1200. Works like a champ when I need it!


Bob

yeah same here....I hooked mine up to my remote start....and for some reason I always have to hit the 'trunk' button twice.

For the first time I use my high idle after starting the truck, I have to press either but 2x before it works. Now after I press it the first time, my idle jumps up 25-50 rpm & then drops back back to normal idle speed. (feels liek a tiny rev) Then when I press it a second time the rpm will go up to the proper level.


Then every time I press either button afterwards it works fine until I turn the truck off & take the key out. The same thing would happen if I were to put the key back in & try it again. Anyone else have this experience?








Yep, that's the way mine works too. When it's cold out I hit the button twice and by the time I get back to the house it starts to climb to the set speed. It must wait until it sees a certain engine temperature or some other parameter before idling up.Edited by: Minn-Kota

yeah, mine too. It's an '04, and I have to hit it twice for it to kick up. Works fine though.

Mine works excellent at all temps even as low as -9 the lowest we have had this year so far.


Engr. Bill

-42 last night.... Started with the remote start, press the trunk button (same as pressing set) And it goes right to high idle. Works every time. So don't use the temperature as an excuse. http://dieselplace.com/forum/smileys/Clown.gif

Minus 42 Thats freaking Ant-Artica COLD http://www.dieselplace.com/forum/smileys/Cry.gif


Does Diesel Fuel even Flow at that Temp


Brrrrr I just got a chill thinking about it.

Hey Max Power,


You DO have your engine block heater plugged in for those temps, right?
Seriously, what else do you do? Synthetic oil? Diesel fuel additives? And is that F or C? Battery heater?


Brrrr is right.

2fast2, yes engine block heater plugged in. But it would start without. I don't have it plugged in at work so its sits for 4 hours after lunch without being plugged in.


I run Mobil Delvac 1. I changed to it 3 days ago from GM dino oil. It still started fine with dino oil. To be honest I can't see much difference. I though I would see more. This is the first time I have ever used synthetic oil in my life.


I haven't run diesel fuel additive yet. I bought some but haven't added it yet. I went to add it yesterday morning but I left it outside and it was gelled up. Seriously.


C and F meet at -40 so does it really matter? http://dieselplace.com/forum/smileys/Clown.gif


No batter heater. Really I don't do anything special. Except shiver.


It really doesn't get this cold very often. Probably two days a year. This year has been extreeme. -20 or colder for the last two weeks. Last night was -40 and tonight is supposed to be too.

Good one on the C and F, just did the math.http://www.dieselplace.com/forum/smileys/Clap.gif It's not an region of the thermometer I'm used to dealing with. I am more familiar with 20C and 37C.


I asked about the battery heater because I recalled reading a Car and Driver years ago when they drove as far north in Alaska as one can go (on a road anyway) and I think they mentioned a battery heater and synthetic oil in whatever gasser they were running.


And to think my dad doesn't think diesels are a good idea because of the cold weather where he lives in Western New York. Ha.


I'm impressed.


Jim

I see the odd battery blanket. They only heat when plugged in to 110v. Not really necessary unless you have a poor battery.


One advantage I do have is that I have a bulk fuel tank. I don't buy fuel from stations. I think that is a big plus.

<TABLE id=HB_Mail_Container height="100%" cellSpacing=0 cellPadding=0 width="100%" border=0 UNABLE="on">
<T>
<TR height="100%" width="100%" UNABLE="on">
<TD id=HB_Focus_Element vAlign=top width="100%" background="" height=250 UNABLE="off">


i have a 2001 SLT 2500HD http://www.dieselplace.com/forum/smileys/Clap.gif...have had it 10 days http://www.dieselplace.com/forum/smileys/Big Smile.gif...i've noticed that it idles faster than my '93 suburban gasser, but i thot it just had a different personality...


i have NO experience with diesels...does my truck have a hi idle, and if it does, how do i activate it and under what conditions shud i?


i live in nothern va where it has been unseasonably cold...into the teens at night and only 35-40F daytime for 2 weeks...same to follow for the next week...http://www.dieselplace.com/forum/smileys/Thumbs Down.gif


thanks....


</TD></TR>
<TR hb_tag="1" UNABLE="on">
<TD style="FONT-SIZE: 1pt" height=1 UNABLE="on">
<DIV id=hotbar_promo></DIV></TD></TR></T></TABLE>

Guys, If you all want your diesel engines to last very long I would recommend to let them warm up a for few minutes at least before revving them to 1200 RPM's.


Might run them at 900 or so but for sure not at 1200 when cold.


JMHO.

Yea - I don't like the 1250 rpm either - it's too fast for a cold engine I think. -41 here the other night, I'm just one province over from Maxpower. Can't believe how this cold is hanging on. Haven't tried getting my dealer to change the idle down yet. works fine otherwise.http://www.dieselplace.com/forum/smileys/Big Smile.gif

Pony-Driver,


It might have it, but more than likely not. We have been installing ours...it is very simple and if you do a 'High Idle' search you'll find some good info and links.


You can check to see if you have the high idle....first look for a after market switch....turn it on and press the C/C set button...if there is no switch still check the C/C set button, there a few ways to install the circuit. Make sure the truck is in park.


Good luck