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Old 10-03-2015, 11:27 PM   #15
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I shut it down out of fear I will get grilled chicken instead of my Big Mac.
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Old 10-04-2015, 12:03 AM   #16
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Watch your turbine temperature gauge, when it comes down to the safe temp, you can safely turn the diesel off.
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Old 10-04-2015, 07:40 AM   #17
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Great comments

Typically I will idle when I go in to pay for my fuel....about two to five minutes, head back to the trailer to use the facilities, again, two to five minutes.

Then, shut down when I add fuel, as this takes about 10 minutes or more.

And, from Cummins website:
http://www.cumminsturbotechnologies....Down_Large.jpg

Shut Down
Before shutting your engine down, let the turbocharger cool down. When an engine runs at maximum power/high torque, the turbocharger is operating at very high temperatures and speeds. Hot shut down can cause reduced service life which is avoidable by a minute or two of idling. Most mobile equipment applications include an adequate cooling period during parking or mooring procedures.

Engine Idle
Avoid running your engine for long periods in idle mode (greater than 20-30 minutes). Under idling conditions low pressures are generated in the turbocharger which can cause oil mist to leak past seals into the two end housings. Although no real harm is done to the turbocharger, as load is applied temperatures increase and the oil will start to burn off and cause blue smoke emission problems.

A note, my Dodge will not allow the vehicle to be locked via the remote if the engine is running, also, the lock button in the armrest of the driver's door will not lock the vehicle with engine running and door open, as one might do with engine off and to lock up for errands, etc.

If one were to open my door by breaking glass and attempting to enter the vehicle, the alarm goes off when doors are locked as in my OP.

Thanks for comments.
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Old 10-04-2015, 08:55 AM   #18
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Quote:
Originally Posted by Msmoto View Post
Typically I will idle when I go in to pay for my fuel....about two to five minutes, head back to the trailer to use the facilities, again, two to five minutes.

Then, shut down when I add fuel, as this takes about 10 minutes or more.

And, from Cummins website:
http://www.cumminsturbotechnologies....Down_Large.jpg

Shut Down
Before shutting your engine down, let the turbocharger cool down. When an engine runs at maximum power/high torque, the turbocharger is operating at very high temperatures and speeds. Hot shut down can cause reduced service life which is avoidable by a minute or two of idling. Most mobile equipment applications include an adequate cooling period during parking or mooring procedures.

Engine Idle
Avoid running your engine for long periods in idle mode (greater than 20-30 minutes). Under idling conditions low pressures are generated in the turbocharger which can cause oil mist to leak past seals into the two end housings. Although no real harm is done to the turbocharger, as load is applied temperatures increase and the oil will start to burn off and cause blue smoke emission problems.

A note, my Dodge will not allow the vehicle to be locked via the remote if the engine is running, also, the lock button in the armrest of the driver's door will not lock the vehicle with engine running and door open, as one might do with engine off and to lock up for errands, etc.

If one were to open my door by breaking glass and attempting to enter the vehicle, the alarm goes off when doors are locked as in my OP.

Thanks for comments.
The door can be opened by using a tool under the door handle and disarming the alarm in one fell swoop
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Old 10-04-2015, 09:02 AM   #19
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An issue not brought up yet is the harmful effects on the aftertreatment from idling time,you are adding extra soot load to the dpf.The dpf has a finite amount of soot capacity,it is burned down to ash during the regen process(using additional fuel)but you are reducing it 'snormal life.Not an issue if you trade off but for those that keep a vehicle over 100k it will be an extra expense.
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Old 10-04-2015, 12:26 PM   #20
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Shut it off

For the sake of those of us who breath please shut it off
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Old 10-04-2015, 12:38 PM   #21
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Mmmm...

Well, what I am actually doing is following the engine manufacturer's recommendations. And, if someone really wants to break into the vehicle, this of course can be done.

My idea in the OP was to simply state that one does not have to have a $350 remote start to be able to allow a cool down period with the vehicle secure as recommended by the manufacturer.
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Old 10-04-2015, 01:35 PM   #22
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Quote:
Originally Posted by cabinetmaker View Post
I'm a old dieselhead. Been pulling heavy with Ram Cummins diesels for years. Let her cool down. If you check your manual it has cool down times. My new 2015 Ram 3500 duelly does and my old ones did too. This isn't old school hearsay. It's important to your engine and turbo. Don't believe me just google it.
I have no opinion on the matter, but it does amuse me that Google is cited as the authority. It is my experience that you can find any opinion you wish to find on Google.
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Old 10-04-2015, 01:51 PM   #23
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My 2015 2500 Ram diesel supplement states to avoid excessive idling

Avoid prolonged idling, long periods of idling may be harmful to your engine because combustion chamber temperatures can drop so low that the fuel may not burn completely. Incomplete combustion allows carbon and varnish to form on piston rings, cylinder head valves, and injector nozzles. Also, the unburned fuel can enter the crankcase, diluting the oil and causing rapid wear to the engine.

After that paragraph there is a chart showing some idling times before shutting down

Stop and go: Empty load: No idle time necessary
Stop and go: Medium load: 30 seconds idle
Highway speeds: Medium load: 1 minute idle

So basically when I'm pulling off the highway to refuel I'll let the engine idle about a minute. I'll probably be forced to do so since I will be waiting for some car to get off the pump that also serves diesel.
When at GCWR, which I doubt I ever will be at, the idle times are more, 1.5 to 2.5 minutes of idle before shutdown.

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Old 10-04-2015, 02:13 PM   #24
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Normal towing I don't idle. Figure the time it takes to get to a pump is plenty. If I have been pulling hard I sit for 2-3 minutes with high idle engaged. It is what it's for. In my older trucks I had remote starts installed with turbo cool down timer. Set it, pull the key, lock the doors and it would shut down in 3-5 minutes.


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Old 10-04-2015, 03:05 PM   #25
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Idle shut down Heat vs, R P M.on diesels

It seems there is a lot of guessing going on when it comes to letting your Diesel idle for a few minutes. Most say it is to let turbo cool down. That is only half the reason. Another reason is that the turbo is spinning at about 10,000 R.P.M going down the road at 2800 engine R.P.M. It takes a few minutes for the R.P.M's to come down to idle 780 R.P.M. before you shut off your engine. The pistons also have an oil line that sprays up to help lube the pistons that at long idles do not have enough oil pressure to lube the piston skirts. That is another problem besides the turbo spinning at 8000 R.P.M with engine off and no oil pressure to bearing. The only reason you see truckers let their engines run for awhile when they first start is to build up air pressure and do a per trip to check that all of the gauges are working. My biggest gripe and worry is people that say what kind of "Gas" mileage they get, or stopping to get "Gas" at a fuel stop. In my 45 years as a diesel mechanic/truck driver at least once a week someone would come into our shop because of gas in a diesel fuel tank. Like one time the a wife was towed in and said her husband said "Go >gas< up the rig while I finish setting up camp" $250.00 mistake. Food for thought????
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Old 10-04-2015, 04:49 PM   #26
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Quote:
Originally Posted by Msmoto View Post
Well, what I am actually doing is following the engine manufacturer's recommendations.
The engine manufacturer's recommendations were not to have extended idle periods, it is bad for the engine. If you are pulling at maximum power into the fuel stop, then up to a few minutes is a good cool down time, absolutely. If you are at medium load though, which is more typical given the ratings of these engines, then the time it takes to manoeuver to the pump from the highway is enough time to cool it down.

Quote:
Originally Posted by Msmoto View Post
Shut Down
Before shutting your engine down, let the turbocharger cool down. When an engine runs at maximum power/high torque, the turbocharger is operating at very high temperatures and speeds. Hot shut down can cause reduced service life which is avoidable by a minute or two of idling. Most mobile equipment applications include an adequate cooling period during parking or mooring procedures.
(my emphasis)

An exception to the adequate cooling period during parking would be pulling up the Ike Gauntlet (if that is what it is called) at full throttle to see if you can beat the Ram/Ford/GMC/etc, pulling into a rest stop at the summit, and shutting down immediately. Bad idea. But it is hard to imagine requiring maximum power to pull into a fuel station and park.

Just as a comment on how far oils and turbo technology have advanced in the past few years, the newest vehicles from some manufacturers are employing small turbos that turn much faster than the turbos on these HD diesel trucks. These same vehicles are programmed to automatically shut down and restart at traffic lights. For the life of the vehicle. Without adverse effects. And with much higher speed turbos.
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Old 10-04-2015, 05:10 PM   #27
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Unless you've just gotten off a long uphill tow and pulled to a stop, shut it off. Long idles are not good. If you HAVE been pulling hard, let it cool down for 5 min or so.

On that subject..... We're on the road again, staying a couple of nights at Lake Fort Smith. Had some really good hills getting here. When we pulled in to the park office parking lot, I made a point to see hot warm my Tru-Cool Max transmission cooler was.... pleasantly surprised that it was only warm to the touch. I am sooooooo glad I installed this 45K BTU transmission cooler on the truck!
(Last major expense for this PowerStroke is to put a U.S. Gear exhaust brake on the truck for those downhill tows.
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Old 10-04-2015, 06:44 PM   #28
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You could save yourself a bit of money and wear and tear over the long haul if you install one of these.

You can set up this to run for a determined time after shut down.

Ram Diesel Problems

Cheers Tony
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