What is the advantage of the high idle switch. I am from california. Maybe this is nothing I need. This is my first diesel so I look at evryones post. You guys are great with info.

In cold weather it helps to keep heat in the motor and helps to prevent cylinder washdown from idling.


In CA it will probably help keep the AC running colder when idling.


It's cool to have, a just because...............





Thttp://www.dieselplace.com/forum/smileys/Cool.gifNYEdited by: GMC-2002-Dmax

High Idle accomplishes two purposes based on what I have read


The number one purpose is in cold weather operation, it turns oil(molasses) into its normal state(flowable) quicker. Resulting in less start-up wear.


Second purpose is diesel arent very efficient at idle, and can cause excessive soot build-ups in oil. Diesels power a lot of PTO's etc, Many work just off idle their whole lifespan


Almost every big diesel Med. Duty truck we have owned either came with a hand operated high idle switch, which is also their for PTO operations. Or hand operated or automatic high idle on cold start-up


Our Cat 3126E when plugged in and started in say 5 degree weather will automatically idle up after 15 secs and stay idled up for almost 20 minutes


Bill

Do you guys think there's any data out there on washdown in electronically-injected diesels? I could see where a mechanical pump would have issues controlling low flows, but the HPCR should be able to do a bit better, don't you think?

We have had a real cold streak here. Temperatures from -10 to -40 for a couple weeks now. My truck will not warm up past 100F at normal idle no matter how long it runs. On high idle (1250rpm) it will warm up to 130F-140F. This is according to the attitude display.

The main purpose for high idle is for the PTO (power take off) used in commercial trucks (chassis cabs).

You guys are great witht te info. And quick. From the posts I have read makes me think it is of no advantage for me to add one.

I seen a Furd 7.3 Turbo Diesel van fueling today with high idle ....First 7.3 I've seen with it ...





Mac http://www.dieselplace.com/forum/smileys/Embarrased.gif

I seen a Furd 7.3 Turbo Diesel van fueling today with high idle ....First 7.3 I've seen with it ...





Mac http://www.dieselplace.com/forum/smileys/Embarrased.gif








My dad has had about 6 7.3L's and all of them have had automatic high idle. They were all 01 and newer.

The older ones had a huge box that could be plugged in under the dash with an lcd readout and a few buttons. The high idle was user adjustable with that box. I beleive a lot of the ones that came to Canada had it as standard equipment.

i too have install the high idle switch, but i also have a b&d exhaust brake, comparing too.


outside temp: 18


high idle switch on: exhaust temp 252


exhaust brake on: 412 exhaust temp


high idle off,exhaust brake off,normal idle: 150 exhaust temp


MY 0.02





and no cold fronts yet!Edited by: RUMAXED

http://www.dieselplace.com/forum/uploads/1C5_a9_1.jpg

what do those buttons on the left say?

PTO control, rpm control, power and I believe charge protect (I know it has something to do with charging)

Thanks Max..... It Is Hard To Read