What happend to my high idle??? is idling bad for 6.0s?

[DieselPeter]

Used to be that when I first started the truck it would do a normal idle for about 3 minutes , and then wind up to a much higher idle................
NOW , its just pretty much stays at idle.

Is that because its much warmer out, or is there another reason????


Also, I read somewhere that its bad for 6.0s to idle for too long, is that true????? I let mine sit at idle alot..........

[BP6.0]

It will idle up according to ambient temps. For instance I live in San Diego Ca. and on a cold morning here I will see about 750rpm's. But when I go to Northern ca. and it is under 30* outside it will idle a little over 1000rpm's. I let my truck idle alot as well and have never had problems. I am sure that the EGR valve is the problem when long idle times occur.

[Phil G.]

As stated, the high idle is temp related and yes the EGR valve really hates idling. But there is another issue with extensive idling called wet stacking. You can search wet stacking if you want more detail, it has been discussed many times on this site.

[DieselPeter]

Thanks.............I will look up wet stacking. This may sound like a dumb question, but as a maintenance thing, is it worth changing out the EGR valve periodically????

It seems to me that it would be a fairly inexpensive item to change out, even from the dealer....????

[rock_doctor]

Actually yes.... Some have two and just change each oil change. The one they take out gets cleaned and saved for the next change out. If you take it to the dealer they will not change it but clean it and reinstall. Here is a link to a page describing how to clean the valve. Diesel Technician Society

[STG]

From memory I seem to recall the diesel owner's supplement recommending no more that 10 minutes idling for every hour of operation.

That said, I have the SEIC hooked up to the #4 upfitter switch and use it religiously anytime I'm idling for more than.

You may want to hook up the Stationary Elevated Idle Circuit. It's built-in to your truck and all you have to do is hook up a switch to the wiring for it found under your steering column. I think there is a sticky around here with directions.

With the truck in Park and the emergency brake on, activating the SEIC will increase idle to 1,200 RPM and help prevent wet stacking (engine runs warmer at 1,200 RPM). Additionally SEIC does not lock up the torque converter like the other up idle circuit for power take off applications.

If the engine computer senses low batteries, the SEIC wil automatically raise idle anywhere from 1,200 to 2,400 RPM until the bats are charged.

[ZMANN]

do the high idle mod and it takes 30 minutes to clean an egr just get a gasket kit ahead of time

[pwrstrokn2004]

I see how to clean the manifold but what to use to clean the valve?