It keeps some exhaust heat from escaping which helps warm up the engine a bit quicker.

I start mine, turn on the exhaust brake and then engage fast idle. In the winter, it helps with warmup. In the summer time, fast idle increases the A/C system efficiency.

Jason

 

It keeps some exhaust heat from escaping which helps warm up the engine a bit quicker.

...
Jason

It helps warm up the engine, but not because of keeping exhaust heat. It blocks the exhaust partially which puts a load on the engine which causes
it to consume more fuel which heats it up faster.

Side effect: it also commands the EGR to 0% during EB usage, so less soot
during that period.

 

I know its not exactly cold yet.. but how do you switch on high idle. Yeah i know stupid question.. havent had the truck long.

 

It has to be enabled with a StarScan on the '09 and older trucks. To turn it on, push the cruise on/off switch on, and then push the set button. To raise or lower the RPM, use the resume/accel and decel buttons.

Jason

 

Starscan? Is this a tuner or system monitor like the ScanGuageII that I run?

Running at high idle just seems wrong. With the internal combustion engine, it creates additional wear on parts due to the oil not lubricating efficiently until up to temp. Can someone tell me how a diesel engine differs, allowing it to lub well with thick oil? How exactly does the engine brake work in warming up the engine? Is it simply making more friction because it's loading up the pistons and bearings? Again, this seems counter intuitive to a nice slow easy warm up until everything is up to temp.

 

It only idles it up to 1100 rpm while in park,it's not like you got the throttle to the floor

 

I don't know about everyone else, but after I put a 4" tbe with no muffler the engine break is pretty loud and obnoxious, espesially at warm up idle. It doesn't bother me as much under a load but it sounds like a super hair dryer on crack at idle, not sure if you can do anything about it other than adding a muffler... Sorry to change the subject, but the extra exhaust heat and slight load just aids the engine during warmup.

 

I don't know about everyone else, but after I put a 4" tbe with no muffler the engine break is pretty loud and obnoxious, espesially at warm up idle. It doesn't bother me as much under a load but it sounds like a super hair dryer on crack at idle, not sure if you can do anything about it other than adding a muffler...

You ought to hear it with a 5" stainless and no muffler. Sounds like a F-14A on burner waiting to be launched off the deck rof Neighbor two houses down asked me WTF? when he heard it 'light off' at 10p one night.

 

You guys need to read up on the high idle feature that needs to be enabled and the idle up feature that automatically happens in cold weather,,,,,,they are different.

 

CarboniteCummins - Articles

Here is a really nice link from FLOPSTER it has some nice links and articles...

 

I was going to hop in and post the same link, but it looks like I'm 10 minutes too late.

 

They will tell you that it is a safety issue and that they want to sell you a 300-400 dollar wiring harness that will only allow the high idle to work when the truck is in neutral.

My local dealer didn't know that it could be done until I did a little reaserch on this site and I found all the answers I needed. You have to love this forum.


After I told them how to do it they were pretty happy that it was that simple. I wouldn't put it past them to just ground the wire like I did and tell folks that they needed the wiring harness.

 

no factory p.t.o. safety switch

 

Took me a while to get used to it, but definitely turns heads :thumbsup:

Truck warms up quicker with it in. And, print those instructions out from Flopster's site. I have a 68. Local dealer said it couldn't be enabled on an Auto. While in Iraq, i directed wife to Flopster's site to print those, and she took that and the truck to another dealer to have it done in 2 minutes, no charge. Local dealer still wouldn't do it with printed instructions

 

If you look close you will see the green wire with an orange stripe. I removed the two bolts that held the connector on to obtain better access to the wire. I used a small compression lug and placed it under the bolt when I put it back together.

Sorry for the poor images my phone does not take the best ones. Hope this helps.

 

There is an excellent write up with PICS in the link i posted also...it gives step by step instructions...

clink the link and click on the manual high idle link ...

 

I am trying to figure out if there is a certain temperature that the exhaust brake will come on with high idle enabled. I know the switch has to be turned on.

 

seems to be around 50 deg f.