Flushing A Heater Core

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Come along with Eric O. at the SMA shop as we diagnose and repair this 2013 Ram 3500 Cummins that came in with a complaint of no heat out of the dash vents. We diagnosis it as a restricted heater core and show you how we flush them out in the shop.
Dual Channel Digital Thermometer : amzn.to/2pS1VJv
Thermocouple Probe Temperature Sensor : amzn.to/2ph4Sl2
Blast-Vac Multipurpose Cleaning Gun : amzn.to/2qb0Gbm
Infrared Thermometer Temperature Gun : amzn.to/2pRykC2
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South Main Auto Repair
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Disclaimer:
Due to factors beyond the control of South Main Auto Repair, it cannot guarantee against unauthorized modifications of this information, or improper use of this information. South Main Auto Repair assumes no liability for property damage or injury incurred as a result of any of the information contained in this video. South Main Auto Repair recommends safe practices when working with power tools, automotive lifts, lifting tools, jack stands, electrical equipment, blunt instruments, chemicals, lubricants, or any other tools or equipment seen or implied in this video. Due to factors beyond the control of South Main Auto Repair, no information contained in this video shall create any express or implied warranty or guarantee of any particular result. Any injury, damage or loss that may result from improper use of these tools, equipment, or the information contained in this video is the sole responsibility of the user and not South Main Auto Repair.

Опубликовано:

30 сен 2024

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Комментарии : 561

@taddbitofvideos3974 4 года назад

I just wanted to drop you a huge thank you. Had a heater core in a ram 2500 that was putting out 80 degree temp, this was after a recall at the dealer, they claimed it was that way when it came in, really. I dont think so, quoted me 2100 to change. Bought the otc tool, and 45 minutes later I have 151 degree coming out of vents now. Flushed entire system completely, works awesome, and I spent 28. To fix it. I thank you sir for the great video.

@yourface3154 Год назад

2 years late, but no way you spent $28 to completely flush your system.

@taddbitofvideos3974 Год назад

@@yourface3154 28 for the tool, not including antifreeze,

@papaw2937 5 лет назад

How have I never seen a topside creeper before. That thing is BA.

@kubeanie18 4 года назад

You got to love being able to lay over the top of the motor

@TylerDeBoy 3 года назад

@@ethand3577 The British finally got something right

@ApartmentKing66 3 года назад

I'm gonna need one if I'm going to flush my Malibu's heater core. Its nipples are right in the middle of the firewall rather than at the top where you can access them easier. But that's GM for ya...they pride themselves in making a 3-day job out of a 20-minute one.

@brianallison1913 2 года назад

If I didn't know any better I would think this guy is calling me a derogatory name lol.

@Brooklynraised68 7 лет назад

this guy can do anything the best on you tube loyal viewer always

@rzjk301 6 лет назад

That top side creeper looks cool!

@rubengarcia6920 5 лет назад

To simply the thing with the thermocouple and infrared the thermocouple gets the effect of the air temperature and infrared gets the surface temp of what it’s aimed at

@scottfirman 7 лет назад

Wow,snow in New York.lol. We have freeze warnings here in Northern Mi. It may be the month of May,but we could still get snow. No one is safe in MI till June.

@kenman1717 7 лет назад

I was confused when you said that both hoses were about the same temp, so you though there was no flow in the heater core. I was taught that if one hose is hot and one is cold (or cooler) that indicates a blockage, and that's how I've always approached this. and I've never had an issue.

@marlinyoung1606 4 года назад

SMA how much air pressure do you recommend to use when doing that?

@nicke2307 7 лет назад

Is that from the coolant sludging up in the heater core?

@KenzJeanFrancois 7 лет назад

U are having too much fun with it

@RyuukoGo 7 лет назад

Looks like they Dodged a major repair.

@jack002tuber 7 лет назад

Is that like a pun?

@RyuukoGo 7 лет назад

At least it wasn't rotten to the core

@bash5995 7 лет назад

they almost got rammed on this one

@RyuukoGo 7 лет назад

SMA had an Intrepid mechanic

@jack002tuber 7 лет назад

He has no Stratus fear

@paulthomopoulos4394 3 года назад

I haven’t had real heat in my truck for 2 winters now. This truck had the exact symptoms as mine so I followed the steps in this video. I now have full heat again. Thanks so much!!!

@nate.hanlon Месяц назад

@@paulthomopoulos4394 how long did it last?

@paulthomopoulos4394 Месяц назад

@@nate.hanlon It’s still going!!! You know a diesel truck in our northern Canadian winters is tough for heat, at least mine anyways, but after this flush I can at least say I’m warm and my windshield doesn’t freeze up while driving. Are you having no heat issues as well???

@nate.hanlon Месяц назад

@@paulthomopoulos4394 yessir! i was told it could be something that this shop can scan and fix it from it sitting. awhile before i purchased it because the previous owner said bf put a heater core in it but im not sure.

@BigGoucho 7 лет назад

A sunny Saturday evening here in Bonnie Scotland, UK. Beer and a new SMA video. *cheers*

@SouthMainAuto 7 лет назад

Cheers!

@BigGoucho 7 лет назад

Join us! :)

@chomerly 7 лет назад

And a relaxing evening down here in the Midlands, UK, also getting my SMA fix. Cheers! 🍻

@schigara 7 лет назад

A beautiful evening here in Northeast Arkansas, USA relaxing with a rum and 7, watching SMA and waiting on the main event fight between Alvarez & Chavez. Cheers all!

@andrewwmacfadyen6958 7 лет назад

Sipping Irn-Bru in the sunshine makes a change.

@DatCityBoy504 2 года назад

You are the man. Man I have the 2014 Ram 2500 6.7L Cummings. Up until about 30min ago I had absolutely no heat in the truck. I was lucky enough to get it done with a garden hose with a high pressure tip on it, NO airlines at all. You should've seen the clumps of calcium that came out. I could've sworn that I was going to be pulling the dash out today. So again thank you man for saving me the time and money. I thought I was going to be knee deep into a rats nest of work. To everyone watching and reading this. I highly recommend doing this, its easy, also saves time and money. It took me about 30mins tops..Thank you

@jamesbutler1862 Год назад

I have the same issue with my heater as well so I hope I can fix it like you did.

@TroyFuller-z9u 8 месяцев назад

Thanks for the heads up

@erickieffer8440 8 месяцев назад

Who has been working on your car? Don’t let them touch it again.

@DatCityBoy504 8 месяцев назад

Well, I totaled the 2014 Ram 2500. Now I have the 2016 Ram 3500 dually, same motor 6.7 Cummins. Hopefully I don't have the same issue anytime soon.🤞I can say this though, that mofo gets a five star crash rating from me that's for sure. Now for the new Malibu Ss, not so good damn people had to get cut out of the car.

@EZRider1979 7 лет назад

The facial expression at 10:40, that's like the day after eating taco bell.

@georgeburns7344 7 лет назад

The thermocouple will give you a more accurate temperature reading, because the bulb is directly in the air flow and reading only the air temperature. The infrared temperature gun looks as several different parameters, like emissivity of the surrounding material and not actual air temperature. The emissivity of the material needs to be known so that it can be taken into account when determining the actual temperature.

@MrJKCampione 7 лет назад

No one seems to have gotten the infrared vs thermocouple problem yet, so I will take a stab at it. The magic word seems to be emissivity. It is the property objects have where they emit infrared energy. Metallic objects and dark colored objects (like the black plastic vents and ducts) have a very high emissivity compared to light colored non-metallic objects. Higher end IR guns allow you to pre-program the emissivity of the object you will be testing so that this is taken into account on the readout from the gun. Emissivity can enter the visual spectrum on some very hot objects, like when a piece of steel is heated up red hot. Hope this helps. Wikipedia has a good article on emissivity for more information.

@andrewwmacfadyen6958 7 лет назад

Yes the cheaper IR thermometers are calibrated for building materials brick, breeze block, concrete, steel but the surface finish, condition and texture makes a really huge difference . www.engineeringtoolbox.com/emissivity-coefficients-d_447.html

@BeingInTheMessiah 6 лет назад

The thermocouple produces a voltage which is correlated to a temperature. The gun is measuring infrared radiation. Materials reflect, absorb, and radiate infrared radiation differently. In this case the gun is measuring the amount of infrared radiation being radiated from the plastic fins of the air duct, whereas the thermocouple has the temperature it has from being heated by the air.

@theopinion9452 6 лет назад

Thank you Mr Goodwrench.

@leocurious9919 5 лет назад

"Metallic objects [...] have a very high emissivity" No, they dont! Carefull! The shinier the metall, the more you are going to measure whatever is being reflected off the metall. Pretty much any organic material (so including all paints, no matter what color) will have a good (high) emissivity. Be carefull when IR can go through something or is reflected off the surface.

@k4x4map46 5 лет назад

@@andrewwmacfadyen6958 Nice reference. I started using this website you posted about two years ago

@2013ebruggeman 7 лет назад

and welcome back to the dodge main auto channel!!!!!!!!!!!!!

@opl500 7 лет назад

Dodge - keeping mechanics busy.

@richardcranium5839 7 лет назад

MOPAR- my old pig aint running

@twinsonic65 7 лет назад

For Eric O's place - DODGE - Do or Die Garage Experiment.....

@lucjalajas6988 7 лет назад

2013ebruggeman Dodge the father ram the daughter

@TheJmich2001 7 лет назад

Defective on Delivery Garaged Eternally

@clarencek3658 7 лет назад

drinking a cold one watching my favorite repair channel on a Saturday morning.. #Thelife

@bobmoy3406 7 лет назад

I got Jack and Old No.7.

@janpur1417 5 лет назад

I live in west TX and the heater core was clogged with calciumcarbonate CaCO3. I soaked the heater core with 9% vinegar for 24 hours and flushed it, then refilled and continued for nearly a week! The outcome was great!! I get HOT air (131 F or 55 C) when the outside is 30F (or -2 C).

@yatesyification 7 лет назад

You look like Aladdin, floating around on your magic Topside Creeper!!

@unencumbered 7 лет назад

Ben Yates lol I thought the same

@dave1135 7 лет назад

Ben Yates "🎶i can show you the world, broken dodges in pieces..🎶"

@Jeff-pf6hj 7 лет назад

Good video! Still doesn't come close to the extreme flushing on the Pontiac. Thank you for all that you do!

@MJAli-lf5ms 6 лет назад

I discovered your show last week and have been hooked. I love how you take us along with in the troubleshooting. Thanks

@helivesonforever 7 лет назад

@4:44 Scotty Kilmer with a chainsaw makes a comeback on the whiteboard!

@BlindBatG34 7 лет назад

I find it strange that four people were watching this video upside down when they gave it a thumbs up.

@vincentnewton697 3 года назад

There the ones don't like dirt or grease on there hands

@obadiah7771 7 лет назад

Your vids are awesome brother!! I am glad i am found you!

@uggadugga8070 7 лет назад

Cool creeper! I never knew there was such rig...

@SouthMainAuto 7 лет назад

amzn.to/2pRn8pb

@wetlettuce4768 7 лет назад

Yea, I always wondered how mechanics worked on pick up trucks without screwing their backs up.

@garyr7027 3 года назад

Bought a van once and the idiot previous owner dumped a bunch of stop leak in the coolant instead of actually fixing a bad hose, it plugged the heater core up pretty bad. A good flush and it worked again, I just probably got lucky it did.

@royalwins2030 6 лет назад

I wish you had showed us what came out, but thanks for the vid 😊

@ozzykrahn806 4 года назад

Everything, its a dodge, everything falls out

@chungaleta1234 7 лет назад

Dodge Ram 2500 used to be dream truck, I'd sworn to have one someday... until I started watching repair vids on youtube LOL!!!!!!

@bobmoy3406 7 лет назад

Hey, I have the same Made in China, 2 channel temperature gauge. I use it to reflow solder for motherboards. ETCG ended up with a face full of antifreeze when he tried to unclog a heater core. I would have thought that you would have some special concoction similar to panther pee. The probe is reading the temperature of the air, while the infrared is reading the surface temperature of the vent.

@mrkzj 7 лет назад

I was not welcomed back to the South Main Auto channel...

@baddriversofnorthtexas6850 7 лет назад

But you got first post.

@SouthMainAuto 7 лет назад

Awww sorry about that

@asavage1576 7 лет назад

HEB represent! I live in Euless

@baddriversofnorthtexas6850 7 лет назад

asavage1576 cool deal. drive safe

@smb1014 6 лет назад

And no brake clean?!?!? Seriously!!! Just kidding, Eric O. at South Main Auto Repair - one of the best mechanics around.

@jack002tuber 7 лет назад

I paid to have a heater core replaced once, didn't know about this trick. Neat tool you cleared it with.

@robertrosicki9290 7 лет назад

With some older stuff where the tubes from the heater core come out of the firewall right next to each other the home gamer out in the snowy driveway quick fix is just to reverse the heater hoses at the heater core . The flow reversal flushes out the crap in the heater core tubes . Next winter switch them back the other way . This really works well , might take a bit of driving for the full effect .

@blueshirthandyman8460 Год назад

Bro I did the flush and still no cigar, I'm going to try your method, if it works I will post another comment.

@robertrosicki9290 Год назад

@@blueshirthandyman8460 Surprised to see a reply to my five-year-old comment. The hose reversal has worked well for me over the years. I live up in northern Canada and I've done this outside at -30 when I was desperate for heat. Good luck.

@davidweum Год назад

Robert, I only poured bleach, I think, reversing the flow once. I let bleach clean my F150. I think I reversed a couple of times. I must've fluked it right because it worked. It wasn't quite -40°F, but it was cold. The hoses were easy to get at in the large engine bay. I only used a pair of players.

@robertrosicki9290 Год назад

@@davidweum David , Glad you got the heat working . With one of my old work/bush trucks I'd reverse the heater hoses once late in the fall then back again after mid winter . Kept me warm .

@hansjansen7047 10 месяцев назад

Doesn't the crap end up in the rad or engine that way ? Better to dump it on the ground so you can see what came out.

@markborrmannjr 7 лет назад

infared thermal gun is measuring the temperature of the plastics of the heat ducts and the thermocouple is measuring air temp.... ive found the readings you get with the thermal gun right when you pull the trigger is going to be the most accurate temp

@mrjoeyman 5 лет назад

Bingo. In fact if you look back at the first shot of the gun, you will see that what you said is the case. If you could stop the laser from going "through" the air to the first physical object it comes to, it would be consistent with the thermocouple.

@NoWr2Run 5 лет назад

Eric on my 97 jeep Grand 4.0 I unhooked the hoses at the thermo housing. I drained all the coolant out of heater core flushed with garden hose both ways. Then I bought a bottle of Vanish Toilet bowl cleaner, CLR works good too. I put some water in through the hose then poured about a 1/4 of a bottle of vanish in the hose. Lifted 1 hose while lowering other hose, back & forth for about 5 mins. then flushed it out with garden hose both ways CLEARED MY HEATER CORE BIG TIME.

@paulb5284 7 лет назад

Awesome video, very informative!!!

@GamingVideos-p6j 11 месяцев назад

I did this to a dodge durango. Found gravel in my heater core.

@osos231 5 лет назад

Hello Eric, just became a fan of your channel as a side mechanic. Went to school for Auto Mechanic but pursued other things in life. Still tinker around with cars. Love that you're a down-to-earth mechanic. If you don't know it, you admit it. But yet, you will go and methodically troubleshoot for the answer. You're very smart. You made me go out and buy a few tools from the links you post on your vids :D Please keep posting these links for tools so we know what a pro like you uses. Keep up the good work.

@76calidude 7 лет назад

Just did that to my 95 Grand Cherokee....worked like a charm! I got plenty of heat again., without having to pull the whole dash out to replace core...win win!

@stevejohnson1397 3 года назад

Yeah just wait till you add too much air pressure and you develop a heater core leak then you will be replacing it

@konstantinestern7891 3 года назад

I have a 2013 ram 5.7 gasoline. I get Luke cool AC flow. And Luke warm heat. I was told it’s a restricted hearing core. Would you agree. ?

@princebatswater 7 лет назад

A four year old vehicle with a blocked heater core? Crappy coolant or has somebody put plain water in it?

@josephwash109 7 лет назад

Or radiator stop leak.

@44R0Ndin 6 лет назад

My bet's on stop leak. Stuff causes more problems than it solves, unless the cost to repair the coolant leak is enough to send the car to the junkyard.

@tlstanbro3193 2 года назад

Next time you do a flush heater core could you possibly put the excess water in a 5 gallon bucket so we can see what comes out of the heater core Thanks

@DefaultAccount100 7 лет назад

At least it's not a Caravan this time.

@wetlettuce4768 7 лет назад

I'm sure he has a fleet of Caravans outside waiting to be fixed.

@michaelkane732 7 лет назад

what was the money light on for?

@trevormangus7832 6 лет назад

I’ve always noticed if you hold the button down on an IR probe the temperature always climbs or decreases based on cold or hot those are designed to be an instant read thermometer press and release when you hold the button down it continuously send a transmission and give erroneous readings

@mike4food 7 лет назад

Saturday Morning. Got my coffee and a new SMA video! Great video Eric!!!

@EdYoung81 2 года назад

I bought the otc gun and followed your directions. It worked flawlessly! Thank you for the great video.

@waynec6059 7 лет назад

New vid this fast? sweet. Thermo = reading air temp, IR = reading surface temp of material you're pointing it at. No google required; just like how you can keep your face in front of a hair dryer a few inches and be comfortable, but pointing it at say a small piece of steel for a few minutes then touching it, probably not so much..

@krtwood 7 лет назад

You can't touch the piece of steel because that transfers heat through conduction rather than convection. The steel isn't any hotter than the air that heated it, it can just send that heat into you faster than the air can. The heater core can conduct heat through the components that touch it and I imagine the IR probe can look through the holes in the vent and see the hotter components behind it.

@broken1965 7 лет назад

Wayne C just the same as radiant heat IR wave vs forced air radiant more efficient

@AntonioClaudioMichael 2 года назад

That's your problem lady Ya Heater Core was plugged Good video Eric O as Always @SouthMainAutoRepairLLC

@MichaelMcNeilg 7 лет назад

Do I see the "What would Scotty Do" white board in the back ground?

@zoidberg444 7 лет назад

Michael McNeil Scotty would fix this in 3 minutes just by yelling at it.

@MichaelMcNeilg 7 лет назад

Scotties 45 years of being a mechanic have us all beat.

@MichaelMcNeilg 7 лет назад

LMFAO, I just woke up and was not ready for that!

@wetlettuce4768 7 лет назад

@zoidberg444 Then he would tell us to buy a Toyota becuase those never go wrong....

@zoidberg444 7 лет назад

Wet Lettuce Toyota do have much better coolant and components in them. I use their pink long life coolant in a lot of vehicles.

@theoldwizard998 7 лет назад

Vice Grips ? No fancy hose clamp tools ?? You're slipping Eric !

@libertygunsbeertrump8594 3 года назад

Thanks for this video , it helped me out greatly. Great idea with the extra hose lengths. 👍

@donaldrippetoe5246 2 года назад

Just wanted to send along a thank you for your video. I also ordered the OTC gun and followed the steps outlined in your video and I too have heat again! It was negative 4 here two days ago so its a good thing to have! Thank you again, deeply appreciated!

@johnstark3058 Год назад

I have the same truck, with the Sam symptoms...I have tried to run some water and flush solution through it and noticed that there is not much flow coming out, I am going to try some CLR next, but I have one question....is there a mechanism that blocks the flow depending on your heater settings? I hear that flow is blocked to the heater core when you're in A/C mode, the reason I ask this is....could that mechanism be partially closed, love your channel , thanks.

@frankhaegele2012 Год назад

Have a 2015 ram 3500 6.7 Cummins.Had little heat for a year.Purchased tool from Amazon and flushed.Heater is back to factory.Thanks saved a lot of time not having to pull the dashboard.

@watajob 7 лет назад

Bill Hewitt over at PSH insists that a coolant filter is mandatory on any diesel engine. This vid seems to verify his view.

@dennisleslie 7 лет назад

Check engine light is on....I clearly saw an engine in there so all is good.

@SouthMainAuto 7 лет назад

Yeah I know?! Must be a faulty light?

@dennisleslie 7 лет назад

The problem is there's a bulb behind the spot on the gauge cluster where the check engine light illuminates! 😂

@alexpuls8219 5 лет назад

I just did a heater core flush on my 2003 f150. I hooked 2 hoses to the heater core and flushed out the coolant. Then filled the heater core up with CLR and let it sit for about 10-20 minutes. Then gave her a good flush. My truck gets toasty warm now.

@gzoie 7 лет назад

thanks for another great video Dr. O !! btw it was good to see u posting on your other channel again !! i know you see your kids every day but they are really growing up fast !!! and Trinity is looking more and more like Mrs O !!

@sharedknowledge6640 7 лет назад

You are turning into the Dodge, Jeep, Chrysler, RAM, channel as they seem to be, in your words, junk and often fail even when only a few years old with low miles. In summary: There's your problem lady, you bought a FCA P.O.S. vehicle. When was the last time you had to flush the heater core on a similar age and mileage Honda?

@blueknight2427 4 года назад

Keep up good work. Nice video. Like your sense of humour . That judo chop on starting the ignition made my day. U should put judo Chop at start of video.

@feetmasters2 Год назад

Hello Sir I have a question I bought a used Nissan Xterra 2006 and everything’s works perfectly plus the AC comes very cold. But theirs one problem. That my heater is not blowing hot air. It just blows regular temperature air. Do you think I have to buy a new heater core or flush just as your video. Thankyou

@repomannv 6 месяцев назад

Ram 2500 heater cores are trash, mine is completely plugged up and blew one of the heater hoses this weekend. Tried flushing it a few months ago and it didn't help at all. I'm going to have to replace it.

@OneAuto 7 лет назад

How did you not get a drop of water on the lens. Nice Job

@ronaldderooij1774 5 лет назад

Thermocouple is measuring temp of air, the laser gun in measuring temp of Surfaces. The reading of the laser depends on the surface. So, you need to use the thermocouple in this case and leave the laser gun alone because you want to know the air temp.

@brettperkins4643 Год назад

Found this channel almost 5 years ago with this same problem, tried many things including flushing the heater core several times. Ended up needing an HVAC box. 1500.00 later fixed. Last year solved all my Dodge/Chrysler problems and got a Tundra----- TUNDRA TIME!!

@hatfez 5 лет назад

Watching all the many auto videos on YT, Eric, youer's are the best. You have the right tools, you don't replace parts first, your shop is very clean & you make it fun to watch! A true professional. Plus, where else can you hear those great middle American expressions, like "chip, chop, chip, "grins & giggles" and others I can't remember! Thanks!

@esaker 6 лет назад

Air temperature (thermocoupler) vs. target surface temperature (infrared).

@BillSmith-ut5li 2 года назад

When I flush a heater core I like to flush it reverse of flow first so that anything that's been pressured into blocking more easily be pushed out

@johnkirkland3066 2 года назад

I do that as well.

@vincedelpezzo8209 5 лет назад

Which direction should the Water flow through the heater core ?

@fellixx11 5 лет назад

This was extremely helpful to me. Thanks very much for doing this.

@fonzo2525 7 лет назад

Ford Taurus' vulcan engine,named for the god of iron mind you, rust monster block is the worst for heater core clogging,now i know why they gave me a Ford winter hat and jacket when i bought the car,got a ford tank top for summer for when your ac goes out as well,both came true pretty quick,lol,bet you've done a few of those at the shop,ford sells a rust cleaner for the system called vc-9 for when you do a coolant flush and heater core replacement on those junk fords.

@pskauto6798 7 лет назад

Nice video, Domestic Cooling systems suck, your flusher tool was a nice contraption to get the job done for sure. i use BG flush, unregulated shop air, and tons of water! lol I got 3 water seperation filters but no regulation lol as for the last question asked about the temp difference, The way I was told about the variant created between a laser gun and a thermocouple, a Thermocouple gets its reading from its own physical, conductance based on the disimilar metals that it contains, creating the temp reading. It is also a larger surface area (relative to the laser) to warm .The Infrared Laser reads the temp of the surface in which its reading. Which is the small surface that the laser hits, which is most likely the wall inside the Vent where you pointed it. Since I suck at explaining things, the most basic way I can say it is that one is measuring a surface temp, and one is based on the heat created by the air flowing past it? I could be wrong, but its all I know for now! lol

@Graham_Wideman 7 лет назад

The laser on the gun is only for aiming, it has nothing to do with the measurement. The actual area which the gun's lens sees is within a "cone" of some number of degrees wide (like the reverse of the cone of light from a flashlight). For example I have one that has a 12 degree field of view.

@cedriclorittssr4361 7 лет назад

I will try that on my Dodge, thanks

@garysgarage3669 7 лет назад

I did not know that the curse control can be used in park.

@heyitschinoable 7 лет назад

Gary's Garage thats what confused me

@RobertHancock1 7 лет назад

Think that's a diesel thing - they tend not to produce much heat at idle so the fast idle mode helps to keep them warmed up in cold temperatures.

@wetlettuce4768 7 лет назад

Me niether all I've come across is a switch on some work trucks that puts them onto a fast idle so they can run power consuming tools and electronics.

@BigDogCountry 6 лет назад

Is curse control like a swear jar?

@JeffinTD 5 лет назад

On most Cummins this is how you control PTO speed. Can also be used for warm ups. On older Dodges the PTO feature had to be activated in the ecm, and stick shifts required a kit that was a switch and bracket that told the computer the clutch was engaged (or buy a wiring harness repair pin, install it into the correct position on the ecm, and ground it). High idle only works when vehicle speed is zero anyway.

@themechanic6117 7 лет назад

nice! SMA and coffee first then go cut the grass.

@jacobfoxworth 5 месяцев назад

Dont hold the ir gun pointed at the vent for an extended period. Just point it for a second get a reading and stop. That will be the most accurate. When you hold it there the infrared from the heater is bouncing off the gun back at the vent and back and forth the longer you hold it there causing the temperature to seem to rise. You're kind of creating an infrared mirror and thats why the temp seems to be going up. That first measurement is the most accurate, after that anything else is reflections.

@allanvaneste9106 Год назад

Try an ambient air temp of -30 Celcius. That's when you need your heater to work. Not at +16 Celcius.

@fuzzy19111 7 лет назад

Fill the core with brake clean!

@wallyg.2409 7 лет назад

Excellent fix, Eric O. And thanks for the links to the Thermometer and Probe. I'm going to order that right away. Nice tool.

@jkoneman 7 лет назад

Use clear 5/8 hoses and then you can see whats coming out

@uncmouse 7 лет назад

for air flow should use a hot wire set up,what is used here is for checking surface temps on bearings and a/c lines doing superheat and sub cooling.bit more accurate though.especially with air fow/volume.excellent work brian

@TheCowgirlNiamh 7 лет назад

Loving the Topside Creeper! :)

@beachbummm69 6 лет назад

2013 and its a pos already

@Ken6151 5 лет назад

Can't blame the heater core on road salt.

@jacobleblanc27 5 лет назад

You guys probably drive by someone with a flat tire and say "Typical. It's a Dodge!"

@ricky-sanchez 5 лет назад

The thermal coupler is reading raw air temp. The thermal gun is reading coolant temp. Don't forget your heater core has coolant passing through it. Two different tools for two different applications. The thermal coupler is more accurate for air temp. The thermal gun is used for way more different things. It can be used for air and coolant temp. In the event for diagnosing vent temps, I'd use the thermal coupler.

@masseymm 7 лет назад

finally a 6.7 ctd vid! more please!

@surendrabullets483 2 года назад

Chances of breaking the pipe,,, follow the other processes,,like coolent box vent cover loose to gas release ,but carefully,, slowly slowly anti clockwise ,,,and use citric acid or vinegar with salt,,

@indiandy03 6 лет назад

Thanks for the excellent video. It is not something I have done before but I will follow your advice and see how I get on. Do you think that wet passenger and driver foot wells could be because of a blocked heater core

@throttlebottle5906 7 лет назад

perhaps you should rename to "Moparts Master" all these Chrysler byproducts =p also, just how old is this video ;)

@jdracer111 3 года назад

Junk diesel ruined your video. You can't sit and listen to that thru the whole video. Sorry. Don't do anymore diesel junk.

@tomus1480 4 года назад

Mr. O. You are a `super` smart guy. I enjoy watching your videos.

@mannyroias3392 7 лет назад

love watching your videos good job!

@elizabethwilson974 7 лет назад

Along with the great info in this video, another takeaway is never get in a water gun fight with Mr. O! You will NOT win!

@TheDyes 7 лет назад

The money light is on - do we get another vid from this truck?

@NebukedNezzer 6 лет назад

my home water pressure in over 90 psi. this is a great how to do it flushing video. that flusher would work well on the radiator as well.

@HUBBABUBBADOOPYDOOP 7 лет назад

Nice video, Eric- thank you, and the "anonymous 3rd hand" you employ.

@gman8557 8 месяцев назад

Great video Are there 2 blend doors? My driver side is cold while passenger side is hot

@michaelcoode1689 7 лет назад

working on volkswagen radiators is a pig all plastic hate plastic brakes expensive

@patrickmccarel 4 года назад

Just did this procedure on a '13 Ram 3500 6.7L H.O. First time using the (Matco Version) of this tool. I was impressed, as was the owner of the vehicle. Great video! Always try this first before replacing the core, and check both sides for temp difference.