High idle on at factory on '15's?

[mwilson]

The fast Idle worked on manual transmission Series 60 Detroits. Apply the parking brake, turn on the cruise, and keep hitting the accelerate button up to where you wanted it.. Some of them also had a PTO setting you could select.. The only difference being that with air over spring parking brakes the computer would definately know that the parking brakes were set.. but it should (or can be) be wired into the parking brake dash lite circuit.

A little off-topic (I do that all of the time..) but if anyone is curious there is a pressure switch on the parking brake control that completes the circuit when the spring brakes are applied to allow operation of the fast idle function on that Series 60.

Mike.

 

[mwilson]

Found it, also doubles as an emergency keyless entry system...

http://www.alligatorperformance.com...al-Adjustable-High-Idle-Switch-p/adp-rock.htm

 

[mwilson]

I found the above while honestly looking for a manual transmission work-around for the high idle. There has to be a way......

 

[Brocky]

Mike
You explained it better!! That is what I meant when I said the computer knew the parking brakes were on..I guess I am off topic also comparing apples to oranges!!

 

[DGamelin]

My 04 would idle up by itself when it was cold out side. Before I could get a gooseneck trailer hooked up it would idle up. On these new ones will it idle up in cold weather by itself or do you have to do it yourself.

 

[AllianceDiesel]

3rd gens and newer all will high idle on their own and when manually activated with the cruise control. People have this old habit of letting a diesel idle because that's what everybody else does and that's what they did with the older diesels. Well its a horrible idea. You are just wasting fuel and wearing out the engine faster.

 

[photowrite]

At first I was encouraged, hoping my '14 2500 might have the factory high-idle feature activated, while being skeptical because it's a G56 manual trans. Reading further, it appears that my skepticism was warranted.

Surely the ECM knows the parking brake is engaged and this is a simple thing for Ram to offer if they wanted. The 1996 F-350 with ZF-S5 manual transmission I sold after buying my new Ram was ordered with a factory option called "auxiliary idle control". The truck needed to be stationary (tires not rolling), parking brake set, and foot off the service brakes---engine could be idled anywhere from 1300-2500 rpm, the ramp-up rate was adjustable from almost instant to very slow, etc. Well worth the approx. $200 it cost as a factory option. When not used as an idle controller the LCD displayed rpm, loved it.

I'd be somewhat surprised if the G56 chassis cabs didn't have a fast idle feature available?

 

[SnoKing]

Does the G56 have a transmission neutral switch or clutch not depressed switch? Seems those two things are in play, to prevent a accidental launch of the vehicle. SNOKING

 

[Mingoglia]

3rd gens and newer all will high idle on their own and when manually activated with the cruise control. People have this old habit of letting a diesel idle because that's what everybody else does and that's what they did with the older diesels. Well its a horrible idea. You are just wasting fuel and wearing out the engine faster.

Says the man from Nebraska. With all due respect, most of my idle is a result of it being 118 degrees outside and I want to keep the cab cool because I live in hell. Ironically on my 2nd gen, since it was older, my highest times of idle were waiting my turn yearly at the emissions center in the middle of summer waiting for the sniff test. I suppose the engine, particularly at high idle doesn't have much of an issue generating heat for combustion in these conditions though. Diesels use very little fuel when idling, unlike a gas engine which stays more or less at a constant air/fuel ratio regardless of RPM.

 

[AllianceDiesel]

It doesnt get hot in nebraska? If you are gonna idle, enable high idle. But its your engine and I have personally seen what happens with idle times that are more than 20% of the life of the engine

On the manual pickups, how can the pickup know the parking brake actually works? What happens when you accidently hit it in gear? I seen why chrysler doesnt want the liabilities of it on the manual pickups

 

[Newsa]

I always assumed the drivers of big rigs/semi tractor/trailers. Idled their trucks at truck.stops in winter to keep fuel from gelling and prevent difficult starting. Never really asked though. I might be off track with that. And I assumed since they put alot of miles on their trucks, idling would be a somewhat low percentage of their use time. I didn't see anything wrong with it. Guess it's harder on the diesel engine than I previously realized.

 

[RVTRKN]

What, then why does my C&C high idle work, as well as the emergency brake being integrated with it as well as the clutch. If the emergency brake is not on or I depress the clutch it turns off.

 

[SnoKing]

What, then why does my C&C high idle work, as well as the emergency brake being integrated with it as well as the clutch. If the emergency brake is not on or I depress the clutch it turns off.

C&C were/are setup for power takeoff applications that require higher idle RPM's? SNOKING

 

[jkalchik]

And probably not driven by soccer moms....

 

[RVTRKN]

I would imagine that if the ECM can see it, it can be fooled like a deleted truck. Was the High Idle available for 07.5 6.7 manual trucks?

 

[mwilson]

I always assumed the drivers of big rigs/semi tractor/trailers. Idled their trucks at truck.stops in winter to keep fuel from gelling and prevent difficult starting. Never really asked though. I might be off track with that. And I assumed since they put alot of miles on their trucks, idling would be a somewhat low percentage of their use time. I didn't see anything wrong with it. Guess it's harder on the diesel engine than I previously realized.

Combination of potential no start, gelled fuel and bad habits from years of driving. The MAIN reason I used to idle my trucks in winter was for cab heat. It's pretty miserable trying to sleep in that cold hunk of iron even with plenty of covers. I would idle it up to 1200 or so.
Another reason is to maintain air pressure so that the trailer brakes don't self apply from lack of air and freeze the shoes to the drums.

Now that APU's have arrived on the scene idling is pretty much a waste of money, fuel and of your engine. Also many parts of the country have already outlawed extended idling for big rig and will write tickets for violations.
The Thermo King APU (Tri Pac) that we sell and install will maintain battery voltage, coolant temp, provide A/C and heat. Also has an inverter option to provide 120V AC in the cab. Powered by a 2 cyl Yanmar diesel engine they are extremely efficient.

Mike.

 

[mwilson]

I'm picking away at this, I am wondering if the PTO capabilities are the way to a solution....

There is a clutch switch mentioned in this PDF showing the various kits...

http://www.rambodybuilder.com/2014/docs/cc/spkn.pdf

Out of time tonight, will get back into it later..

 

[RVTRKN]

It makes since, I did order my C&C with a PTO kit, but it came with a relay and pigtail that I've never installed.

 

[Tuesdak]

Says the man from Nebraska. With all due respect, most of my idle is a result of it being 118 degrees outside and I want to keep the cab cool because I live in hell. Ironically on my 2nd gen, since it was older, my highest times of idle were waiting my turn yearly at the emissions center in the middle of summer waiting for the sniff test. I suppose the engine, particularly at high idle doesn't have much of an issue generating heat for combustion in these conditions though. Diesels use very little fuel when idling, unlike a gas engine which stays more or less at a constant air/fuel ratio regardless of RPM.

:-laf Ok so no such thing as a cold start during an AZ summer...

Actually we have a different problem out here and that's not enough fan, AC compressor, oil pump, and water pump RPM at idle to keep things cool. Not saying it applies to Ram trucks, but, I have watched many temp gauges climb and oil pressure fall off at idle in summer AZ. So high idle is useful to keep things cool esp. in the cab.

 

[mwilson]

Let's think this through, what conditions allow fast idle operation in an automatic truck? Park brake is not involved so does the ECM need to see Park or Neutral before allowing the fast idle to activate??? If in Neutral does the parking brake have to be applied???

The Chassis Cabs can be upfitted with the PTO package, there is also an option for a customer installed activation switch. Also found that there is a J1939 bus connection on the engine. So I wonder if this can be accomplished on 3/4 and 1 ton trucks with a manual transmission??

I am going to keep picking away at this, I may call a couple of local body builders to see what they know about it.