RAM Cummins 6.7 L turbocharger cool down

How to safely shutdown your RAM Cummins. Always cool down the turbo before engine shutdown after towing or highway trips. See exhaust temp and how long it takes to cool down for safe shutdown.

[@tedbaxter5234]

Love the detail you put into the videos and the calm, deliberate, methodical method you use to deliver the sometimes humorous information!

[@MarionBlair]

Thank you very much

[@bucky1996]

Started following you when I decided to purchase my Ram 3500. I am learning so much about the correct and safe way to operate it for the best performance and long life. Thank you!

[@MarionBlair]

thank you

[@HerkCC]

I was a Crew Chief on C-130's for 21 years. We were taught to wait 2 minutes at ground idle prior to shutdown. As a test cell operator at Pratt & Whitney, we too observe a 2 minute cool down at G/I prior shutdown for oil coking.

[@MarionBlair]

Hey Phillip, you know better than I. (I have been on a c-130, ha), Isn't the bearing operating temp on the average turbine in the 400 deg. F range? Is that right? We are talking about two different animals. Oil cokes at about 600 deg. (synthetic better) so the 2 minutes is probably very conservative?

[@jamesleigh8454]

Hi Marion, Great video and agree with you on the damage that is done on hot shut downs. I find cool down times interesting. I own a toyota hilux turbo diesel and utilise a cool down period of about 1-2 minutes if working hard, and normal city driving with no load, i’ll do 30 odd seconds. I also work in a mine in Australia that operates large turbo diesel equipment. I, myself operate an excavator with a 50 litre, v16 twin turbo cummins( sounds amazing under full load ). These run around 10-11 engine hours per shift at 80% load or greater all shift, so they get hot, especially during summer, and i see these things shut down from other operators for a lunch break immediately. They literally get throttled down to idle, and then turned off immediately, by operators who don’t care or don’t know what they are doing. These engines have zero cool down time generally, and yet these turbos survive on these engines for around 10,000 hours before being replaced under ‘mid-life’ replacement programme. I dont do this myself as i have far more sympathy than other operators, but yeah find it interesting they survive this extreme shut downs every single day. Do you know where your ‘Egt1’ probe picks its data from? I know our equipment do have probes for egt’s and after only about 2 minutes, they are in a safe 400f/200c degree range according to the machines on board computer. 🤷‍♂️ keep up the good work, and drive safe 👍

[@greg9323]

I always do a cooldown. Ram/Cummins note in the owners manual I believe a five-minute cooldown when towing. Marion thank you for sharing and I enjoy your videos. Be safe and happy travels

[@MarionBlair]

Thank you, you will never have Turbo problems. You would not believe the people that do not do this, it's usually those who have to change that out there turbo early

[@pat7957]

I am so happy I found you!! Getting ready to pull the trigger on a 2020 Laramie to pull my 33' 5th wheel from a 6.0 Chevy gasser. Not a dummy about engines but you have opened my eyes. Keep it up!!

[@MarionBlair]

Thanks, you will love it!

[@aquabarrel]

I recently purchased an '18 3500 dually - I have found your videos to be what I need to better understand what I have! Now to work on my confidence level to attempt to do the repairs that you make look so easy :-)

[@Harleywolf65]

Thanks Marion, always enjoy your videos, love the back drop lmao when you said that.

[@benc.7446]

Another great video. Hope you had a great trip. I went camping this past week too just not as far as you😊. I went to Pigeon Forge, TN in the Smoky Mountains pulling my 11.5k 5th wheel. Truck pulled great up the hills and the exhaust brake was amazing as usual going down. I always let my truck idle after pulling heavy for 5-10 minutes but after this video I will likely extend that time. Thanks for the videos.

[@MarionBlair]

We want are going to Ark. next but want to go in that direction next. Ben, you are pulling much more than I so I agree, give it 10 minutes. IMO

[@benc.7446]

Marion Blair have not been to ARK yet but I am sure it is nice. TN was beautiful but campsite was disappointing- we know for next time😁. I can’t say enough good on how the truck did towing again. Pulled up and down the mountain great. The auto exhaust brake is excellent for holding the speed you are at when you get off the throttle and/or brake. Trans got a bit hotter than I would have liked,(212 degrees), but it was because of all the stops and starts while climbing- dropped right back down once I was able to keep moving. Keep the videos coming👍

[@ck3561]

Thanks again Marion! My wife and I tow our fifth wheel cross country, I have my CDL but with those semi it was different hauling construction equipment you are really forced to idle so I have always been curious on what is the proper cool down time.

[@r3d1911]

love this guy's videos about cummins accidental asmr 😆😆😆😆🙂🙂🙂 I'm with you tho after i drive my 5.9 I'll usually let it idle at least 45 secs to 1-2 mins. BTW i do enjoy your videos sometimes funny and sometimes mind enducing asmr lol

[@Running_To_Something]

Good video. I was following the manual, but will follow this more conservative approach. Appreciate the tip!

[@MarionBlair]

I'm just a conservative person, 5 mins might work fine but and may not be much difference. The main thing is do some cool down to keep from coking the bearing. The temperature is what significant, not the time. But if you don't have a way to monitor temp. I'd stretch it a little when heavy towing. thanks. I like your channel.

[@bayonne]

I’d like to see a vid that shows the egt after unloaded highway and street driving. Curious to see how long before it hits 400 deg in that senerio. Another great vid - thanks Marion.

[@alfonzooliviera1121]

bayonne between 400 city spectrum and 600 highway spectrum, occasionally 700 pulling a hill

[@MarionBlair]

towing at 65 mph, you'll be between 800 and 900, empty, 650 to 750 F.

[@MarionBlair]

agree, I usually try to get real light footed a few minutes before shut down.

[@rodrigofabregas7756]

Hi Marion, thank you for another great video!, I have the cable and EGT sensor to be installed in my 2013 6,7 SLT, do you have any video about it?. Thanks.!

[@MarionBlair]

I don't, You'll have to drill the exhaust manifold to insert the sensor. There's a sensor already in the exhaust downstream of the turbo but you need a gauge to read it.

[@terrybader5723]

Great video as usual Marion. Don’t have an exhaust gas temperature gauge, what is your engine temperature related to that 400 degrees and would it be relevant to shut down.

[@MarionBlair]

Oil can coke and begin to ruin the turbo lines and bearing at 600 deg. F so 400 is considerable below that and is generally accepted as a safe conservative shutdown temp. IMO waiting longer just eats up time sitting in the truck waiting and doesn't really accomplish much. Probably excessive idling does more harm than good.

[@MarionBlair]

There's no way to know without a probe in the exhaust. In town, just give it a minute, on the highway give it 10.

[@eman1757]

Funny as hell. Cool guy.

[@paulg444]

Marion, so grateful for you, can you please show a link to that "eDGE" display that you have, and can you provide a video on installing/setting it up. Allot of us want to collect this data.

[@MarionBlair]

I'm using the banks idash now but I have videos on some of the displays of the edge. The biggest problem I have with the edge and I think they have improved it is the glare when it's in the sun.

[@sting1111]

Great video. I don’t shut off my Cummins until Pyro is below 300°. I am not sure how my gauge relates to EGT. I am deleted. I wish this shutdown was automatic when safe.

[@TboneSRT]

Hey great video! Is a cool down necessary for daily driving to and from work with no load? Thanks!

[@MarionBlair]

Not around town but good to wait few minutes after highway driving. Normally by the time you get off the road and make a couple of turns, lights etc.. it good to turn off.

[@TboneSRT]

@@MarionBlair perfect, yes it's going to be mostly highway, about 27 miles one way. Thank you!

[@brycemanuel4205]

Excellent information

[@IndianaFr0g]

You probably have this somewhere already, but for us latecomers, what is the device you are using to monitor? i.e. your gauges?

[@MarionBlair]

I was using a Edge CTS Insight which I don't care for. If I upgrade it'll be something that has less glare, other ok. If you want to go cheapo, download the torque app (android only) and got the route below. kzbin.info/www/bejne/g53VeIZ_Z9RmkKc kzbin.info/www/bejne/q6iscpqImd1kmZI kzbin.info/www/bejne/pIeYimmgptCfndU

[@gunrightsfan]

I just purchased a 2018 2500 4x4 3 weeks ago. Love your videos very informative. What brand of gauge is that? And place to pick one up? I like gadgets.

[@MarionBlair]

That's an edge insight, it's hell in bright light. If you mount it high like on the hand grip or near the rear view mirror, it's much better.

[@gunrightsfan]

@@MarionBlair awesome thanks for the info. Keep the video's coming 🙂👍

[@gunrightsfan]

@@MarionBlair to monitor the turbo temperature does a sensor have to be added to it? Or does it get it's information from the obd port that the Edge monitor is plugged into?

[@MarionBlair]

No, the EGT1 is adequate for turbo temps. The only difference is the EGT1 reading is probably delayed a few seconds since the exhaust gas travels from the manifold to the turbo and thru it before you get the reading. As you run down the highway, All 3 EGT sensors eventually have the same reading so I'm confident the EGT1 is more than adequate and you use the sensor that's already being read. thanks.

[@gunrightsfan]

@@MarionBlair thank you.

[@CLTNY1]

Do you let it idle while sitting at the pump itself? Won't that annoy people behind you? If pulling a trailer it could pose some logistical problems to park on the side somewhere to cool down. I have noticed at truck stops when I drove a diesel rental truck that the big rigs idle for a while at the pump is this what they are doing? I don't remember if they even shut down the engines. I am new to diesel - actually don't have one yet so pardon the newbie questions.

[@MarionBlair]

I've never had anyone complain about noise at a diesel pump and I usually fill up on the auto side not the big rig side. Yes, the big rigs know the problems you can encounter with oil coking from not cooling down and they also like the AC running, ha. Don't worry about it running around getting groceries but towing or high speed empty, definitely. The Ram does have a water cooled turbo and that helps a lot but the manual says 5 mins. That's a little shy as the video shows if you have been towing and pull right in for a fuel up.

[@CLTNY1]

@@MarionBlair Thanks!

[@MarionBlair]

No problem, thank you.

[@streetchicken5738]

Does the EGT readout on the edge insight read from the OBD2 as well or is there an actual EGT probe on the manifold? Research seems to indicate you still need the physical probe but your comments seem to indicate no external probe required. Thank you - Looking to gauge up a new 2018 Ram Laramie 3500 4x4

[@MarionBlair]

Yes it does. For shut down temps and general EGT, I don't think you need to drill and tap the manifold. For racers and engine builders etc.... Yes, you wouldn't want any delay in EGT read out. Personal opinion. When I run for 10 to 15 minutes on the highway, all the probes in the exhaust system read the same, so I'm comfortable with the reading from the EGT1.

[@pushbroom9398]

What product r u using to monitor this information.? It looks bluetooth. Good video.

[@MarionBlair]

That one in that video is an edge Insight I believe I also have a Bluetooth setup and now I've got a Banks idash

[@pushbroom9398]

@@MarionBlair thx

[@pauljbusby]

What a hot running Engine..My Toyota V8 Diesel will drop down to less than that and it takes 5 minutes at its worst.

[@greg9323]

Have you used your idle auto shut down? Good video, I just had this discussion with another Ram owner. Thank you for sharing.

[@MarionBlair]

No, never could make it work. I'm not sure what it's there for. Maybe you can help.

[@monsterram6617]

Marion, did you drill and tap the exhaust manifold collector for your EGT probe?

[@MarionBlair]

No, I'm reading EGT1 behind the turbo.

[@monsterram6617]

Just a FYI, that reading can be 100°-200°F lower than when measured at the collector, which is considered to be the more accurate location to read EGTs.

[@MarionBlair]

@@monsterram6617 Yea, I know it's not accurate as the manifold. Are you saying the manifold temp is going to be lower than the probe downstream of the turbo?

[@nellyfarnsworth7381]

@@monsterram6617 F.Y.I. all 18 wheel trucks E.G.T. probe is AFTER the turbocharger.

[@monsterram6617]

@@nellyfarnsworth7381 What does that have to do with getting a more accurate reading from the manifold? The idea behind measuring before the turbo is to get the most accurate measurement of *cylinder temps.* If you measure after the turbo charger, you're getting readings that are hundreds of degrees lower than what's actually occurring. Mfgs of 18 wheelers probably don't care because they aren't fueling enough to create absurdly high EGTs in the first place. And the EGT probe is more for the PCM and not the driver. Likewise, if you aren't at least tuned there's no reason to even monitor EGTs either. It's only there for the PCM. But if you're going to monitor EGTs, it's probably because you're truck is tuned and maybe even has air/fuel mods. Then you definitely want the most accurate reading, and that is in the collector _before_ the turbo. Does that make sense?

[@joelian9749]

With a Lexus IS 200T with 2.0 turbo, how long do I have to let the engine cool down before I can shut the engine off?

[@donnamajka5524]

Could you tell us how do you know when your EGR valve or cooler is not working properly

[@SteveLShannon]

I've got a 2011 3500 and my truck is fully deleted, my EGT's don't seem to take that long to cool down.

[@MarionBlair]

Yea I wouldn't think it would without the hot EGR intake while cooling down. That can't help.

[@carldavis123]

If you don't mind me asking, what is your setup with the Edge monitor? How many sensors did you need to install? Thanks!

[@MarionBlair]

Carl, the sensors are already on the truck, the gauge plugs into the ODBCII connector under the dash and reads the trucks computer. You can do this very easily with an app called torque and a bluetooth transmitter.

[@carldavis123]

Thanks again, Marion. I hadn't even thought about the bluetooth method. I'm pretty sure I'll be giving that a try. I'm pretty much a gadget guy and will enjoy seeing what's going on under the hood in more depth.

[@skipnick]

quick question, if you arent hauling and trailering, do you still see these temps?

[@MarionBlair]

Skipnick, no you don't see nearly the high temps as towing. You will see about 700 F when running highway however and that's too high to shutdown. Normally, by the time you get on the off ramp and a couple of minutes have expired, you are safe to shut down. The engine cools down much slower when towing.

[@skipnick]

ok awesome, that's exactly my driving scenario. thanks marion!

[@rickywilson6214]

I like the camper

[@DdDten]

For egts as important as there are why (strictly dodge only what I’m familiar with since I own one) don’t they have a factory parameter to monitor also a cool down warning or auto cool down.?

[@MarionBlair]

They are not on a stock truck Some people like to know when they are in a regen. Monitoring the DPF EGT3 tells you that but no need to spend money on a gauge. If you tow, let it idle 5 mins before shutting down and all is fine. On a tuned truck where the HP is cranked up, an EGT probe in the manifold would probably be wise to not exceed 1000-1200 max.

[@KelzCasa]

I come from the Subaru world, where they have an separate coolant tank for the turbo to give it somewhere for the turbo to thermo syphon after shutting the engine off. I haven’t looked at coolant hose routing on the 6.7 I just bought, but I wonder if it is routed in such a way to allow for a thermo syphon after shutoff.

[@MarionBlair]

I think most water cooled turbo's have thermo syphoning but let me know what you find.

[@KelzCasa]

@@MarionBlair - Looks the JIC line at the top of the turbo does come forwards and tie into the braided hose that’s between the air intake silencer and EGR butterfly, which then goes to the 5/16” line back to the coolant degas bottle. Not gonna lie though, I know for a fact that Subaru’s run a 1/2” or 9/16” coolant hose for their turbos (albeit way higher EGT’s) and this might be 3/8” on the Cummins.

[@MarionBlair]

@@KelzCasa Ok, that works I guess. Thanks for that. Interesting.

[@edwardnelson3304]

Marion, what do I do when I do not have an exhaust gas temperature readout? How do I know when to shut it down?

[@monsterram6617]

Look in your owner's manual. It will tell you how long (minutes) to wait after X time driving.

[@MarionBlair]

Yes the manual says 5 minutes to no minutes depending on conditions. In town driving, traffic light to traffic light sort of thing, (empty), no need to idle. Towing or highway speed constant driving, 10 minutes for me. Synthetic is more resistance to coking. I don't use it however and I would still use 400 as my shutdown temp. Let me know specifically what type of driving you are taking about, I've done a lot of egt watching ha.

[@dolivares81]

Thanks Marion, looking into my first diesel in the next few years and I’ve learned so much watching your videos. Really appreciate it!

[@thomaslearned8634]

What is the name/model of the GPS looking monitor you have on your dash board

[@paxnune6368]

my egt gauge switches from the exhaust manifold to the exhaust brake sensor lead when I set the parking brake. the fast idle is switched on and the engine turns off after the egt is lower than 300.

[@MarionBlair]

How did you set that up? Sounds good.

[@JohnCurrent-x8j]

Thx

[@williamtipton1392]

Hey Chief, this is not related to this post, but the most current I could find.....may I ask, I noticed in your oil change post, which are great by the way, that your running delvac 1300 super, I was running that in my previous duramax, but I thought I’d try Amsoil on this new dodge......have you considered running any synthetics ?, or is there any particular reason for running the delvac ?.........thanks for your time

[@nelsongraber8987]

My 18 is stock so I have to shut it off. Letting it idle makes the check engine light come on.

[@MarionBlair]

what is the code?

[@fighter727]

Would it be better to be in high idle for the cool down?

[@MarionBlair]

No, the high idle would make it slower to cool down.

[@fighter727]

Marion Blair thank you.

[@yerbeilisready8562]

What monitoring system is that?

[@MarionBlair]

Edge Insight CTS

[@carlvin8693]

Test

[@Ram-re5em]

Stations in Montana will not Let you fuel with engine running and it’s illegal in this state.

[@fjb4932]

They haven't caught me yet. And what they don't know, doesn't hurt me ...

[@JohnCurrent-x8j]

Thx