High Idle, good or bad?!

james007 · 11-19-2012, 03:26 PM

I bought a BD high idle kit for my truck a while back because i was reading a topic stating that while your truck is idling at 700ish rpm a small amount of fuel continusly goes into your crank case. so hear i go by this. I use it sometimes when im running in somewhere so this wont happen, this is true? if not why do they make this high idle kit? and is it harmfull to my truck? btw the high idle revs at 12h00is

6266diesel · 11-19-2012, 03:28 PM

I thought it was only to warm the truck up when cold.

**01 D_Max** · 11-19-2012, 03:33 PM

Quote:

Originally Posted by 6266diesel

I thought it was only to warm the truck up when cold.

This was the main purpose.

**gmctruck44** · 11-19-2012, 03:38 PM

Or to use PTO accessories. Your engine should not have cylinder wash if it is operating normally. A oil analysis is the best way to identify if you have a cylinder wash problem (fuel in oil) usually caused by failed injector or during engine warm up.

james007 · 11-19-2012, 03:39 PM

wow i never would have thought that, i thought you wanted the truck to warm up slowly

james007 · 11-19-2012, 03:41 PM

so the main reason for this part is to warm your truck up?

**gmctruck44** · 11-19-2012, 03:45 PM

[QUOTE=gmctruck44;1836495]Or to use PTO accessories.QUOTE]
I dont know if LB7's have the elevated idle option but my LBZ came with one automaticlly raises the idle when the engine temp is bellow 32 degrees!

KC2GIW · 11-20-2012, 05:35 AM

[quote=gmctruck44;1836501]

Quote:

Originally Posted by gmctruck44

Or to use PTO accessories.QUOTE]
I dont know if LB7's have the elevated idle option but my LBZ came with one automaticlly raises the idle when the engine temp is bellow 32 degrees!

My LMM does this too. 1000 RPM idle with the turbo vanes closed. My neighbors LOVE it.

premis · 11-20-2012, 08:18 AM

My LLY has a high-idle setting built in, if it's cold it will idle up to warm the motor. It sounds like a jet taxiing in my driveway!

There is no way idling it causes fuel to go in the crankcase. I bet I have idled my truck a cumulative 500 hours and never had a problem. It runs at least 10 minutes every morning year round to warm up and usually stays on when I run into a store or any other place for less than 15 minutes.

A buddy of mine in AZ use to idle his for 5-6 hours while he was out riding just to keep the A/C on.

**jc1843** · 11-20-2012, 08:45 AM

There are TWO different "High Idle" programs--

"Elevated idle" is a factory program that can be set on/off through the steering wheel controls or other. It ONLY will work if the temperature is below freezing and will turn off if you apply the brake or put in gear. The idle is only one speed -1000 RPM-??

The other idle is "High Idle" -- is normally a PTO option where there are three different speeds. It is set through the cruise controls, and will work at any temperature. The option can be added to most vehicles by sending power to the ECM- terminal.
If wired correctly, it will turn off with the brake or when into gear.

11-19-2012, 03:26 PM	eBay Motors #1 (permalink)
james007 Junior Member Join Date: Jul 2011 Location: CANADA Posts: 132	High Idle, good or bad?! I bought a BD high idle kit for my truck a while back because i was reading a topic stating that while your truck is idling at 700ish rpm a small amount of fuel continusly goes into your crank case. so hear i go by this. I use it sometimes when im running in somewhere so this wont happen, this is true? if not why do they make this high idle kit? and is it harmfull to my truck? btw the high idle revs at 12h00is __________________ 2003 LB7 "Daisy" Full K&N Intake EFI Live BD Watch Dog 4" MBRP to 6" single chrome stack PPE boost vavle BD High Idle Last edited by james007; 11-19-2012 at 03:37 PM.

11-19-2012, 03:28 PM	eBay Motors #2 (permalink)
6266diesel Senior Member Join Date: Feb 2012 Location: largo fl Posts: 802	I thought it was only to warm the truck up when cold. __________________ Evan 05 lly 4x4 single cab 2500hd EFI live by kory, blocked resonator, 4in straight pipe,afe mouthpiece, blocked egr, isspro egt gauge, 295/70/17 trail grapplers on h2s. 89 k5 6.2 diesel 8in lift 38.5 boggers X over steering D60, 14bolt

11-19-2012, 03:38 PM	eBay Motors #4 (permalink)
gmctruck44 Duramax Forum Supporter Join Date: Nov 2010 Location: Kent, CT Posts: 105	Or to use PTO accessories. Your engine should not have cylinder wash if it is operating normally. A oil analysis is the best way to identify if you have a cylinder wash problem (fuel in oil) usually caused by failed injector or during engine warm up. __________________ 2007 GMC Seirra 2500, Reg. Cab Long Bed EFI LIVE, Diamond Eye Duals, Fass lift pump, Transgo JR, Shimmed Relief valve and Ported Fittings 18" XD Hoss Wheels, 285-65-18 NITTO Trail Grapplers 2007.5 GMC Seirra 3500HD CCLB DRW SLT stock 1994 4x4 Chevy S10 350 small block fuel injected http://www.dmaxstore.com/

11-19-2012, 03:39 PM	eBay Motors #5 (permalink)
james007 Junior Member Join Date: Jul 2011 Location: CANADA Posts: 132	wow i never would have thought that, i thought you wanted the truck to warm up slowly __________________ 2003 LB7 "Daisy" Full K&N Intake EFI Live BD Watch Dog 4" MBRP to 6" single chrome stack PPE boost vavle BD High Idle

11-19-2012, 03:41 PM	eBay Motors #6 (permalink)
james007 Junior Member Join Date: Jul 2011 Location: CANADA Posts: 132	so the main reason for this part is to warm your truck up? __________________ 2003 LB7 "Daisy" Full K&N Intake EFI Live BD Watch Dog 4" MBRP to 6" single chrome stack PPE boost vavle BD High Idle

11-19-2012, 03:45 PM	eBay Motors #7 (permalink)
gmctruck44 Duramax Forum Supporter Join Date: Nov 2010 Location: Kent, CT Posts: 105	[QUOTE=gmctruck44;1836495]Or to use PTO accessories.QUOTE] I dont know if LB7's have the elevated idle option but my LBZ came with one automaticlly raises the idle when the engine temp is bellow 32 degrees! __________________ 2007 GMC Seirra 2500, Reg. Cab Long Bed EFI LIVE, Diamond Eye Duals, Fass lift pump, Transgo JR, Shimmed Relief valve and Ported Fittings 18" XD Hoss Wheels, 285-65-18 NITTO Trail Grapplers 2007.5 GMC Seirra 3500HD CCLB DRW SLT stock 1994 4x4 Chevy S10 350 small block fuel injected http://www.dmaxstore.com/

11-20-2012, 08:18 AM	eBay Motors #9 (permalink)
premis Senior Member Join Date: Aug 2009 Location: Des Moines, Iowa Posts: 587	My LLY has a high-idle setting built in, if it's cold it will idle up to warm the motor. It sounds like a jet taxiing in my driveway! There is no way idling it causes fuel to go in the crankcase. I bet I have idled my truck a cumulative 500 hours and never had a problem. It runs at least 10 minutes every morning year round to warm up and usually stays on when I run into a store or any other place for less than 15 minutes. A buddy of mine in AZ use to idle his for 5-6 hours while he was out riding just to keep the A/C on. __________________ 2005 Black Duramax Crew Cab Short Box Edge Juice w/Attitude - 4" straight pipe (shaved the muff and killed the kitty) with 5" tip - Blocked EGR - triple guage pod (Aux Fuel, Air Bags, Boost) - air bags w/compressor and 2 gallon air tank - train horn - tint (5 back/15 front) - custom grill - pace roll-top cover - 28 gallon aux fuel tank (gravity feed) - Pioneer AVIC-D3 in dash DVD/GPS/Bluetooth unit with XM Nav Traffic - metra on-star adaptor - PAC SWI-PS steering wheel remote interface - 2 10" MTX subs with Rockford amp - head rest monitors - passenger visor monitor - viper remote start - 07 mirrors (w/ DIY leveling) - DIY pre-OEM Cat fuel filter - boost stick - AEM Brute Force CAI - 20" black spoke KMC wheels mounted with 305x50x20's

11-20-2012, 08:45 AM	eBay Motors #10 (permalink)
jc1843 Super Moderator Join Date: Jun 2008 Location: So. Cal Posts: 9,319	There are TWO different "High Idle" programs-- "Elevated idle" is a factory program that can be set on/off through the steering wheel controls or other. It ONLY will work if the temperature is below freezing and will turn off if you apply the brake or put in gear. The idle is only one speed -1000 RPM-?? The other idle is "High Idle" -- is normally a PTO option where there are three different speeds. It is set through the cruise controls, and will work at any temperature. The option can be added to most vehicles by sending power to the ECM- terminal. If wired correctly, it will turn off with the brake or when into gear. __________________ Chevy 04.5 LLY, 2X, shell, XDR, MikeL 6spd, TransGo, deep pan, blocked, fingered, de-badged, PCV, 65 Gallon replacement Aero tank, PPE on 2, LBZ-mp, shimmed, Pre-fuel filter, tow mirrors, BU cam, gauges, GPS, Sirius, bags, custom grille, fender vents, HD trans cooler- Curt front hitch, footwell lights, load lights, Studs, head gaskets.

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