jeep cherokee cooling system flush

[@hamilton5071]

I am a full time truck driver by day and a part time mechanic by night. I watch these instructional videos just for fun and you are literally the only person on youtube i have seen do this correctly. I scream at the screen when i see people pour 50/50 blended antifreeze into a system that has just been flushed with water. Im glad you explained that you have to add full strength antifreeze equal to half the systems capacity and THEN top off with distilled water. Everything you explained really hit the nail on the head. Keep at it man. Great video!

[@AdmiralOffRoad]

Thanks!

[@codeyalan]

it all depends on where you live as well here is south Texas i can run just water and be fine. But i add the 50/50 because its easier.

[@lavachemist]

If you were to run only water you would have several issues. First, the boiling point of water is 212 degrees F, just 2 degrees above the normal operating temperature of a Jeep 4.0. That means you'd most likely boil over if you used plain water (50/50 coolant has a boiling point of about 265 degrees F). And yes, another reason to run coolant/antifreeze is that when mixed properly, you will have a decreased risk of rusting any ferrous parts inside your engine (like the engine itself in the case of the Jeep 4.0). Rust is the reason that his coolant came out all brown and murky, it would have been much worse if he didn't have any coolant in the system at all! 2 gallons of undiluted antifreeze costs about $15 and it should last you several years.

[@seansavage4766]

micvee not true...water doesn't boil at 212 when pressurized as is the case of a typical cooling system... And actually water dissipates heat faster than coolant. So it works better by itself. But overall you are right.. You should run a 50/50 coolant mixture for reasons of freezing and very mild rust prevention.

[@monicocarrera4434]

Agreed this helped me a lot and details always make for a proper instructional video

[@nightster_lp]

This is definitely the most comprehensive flush tutorial I have found. I can't thank you enough for expressing how important it is to catch the old toxic coolant. The only other tip I might add would be to back flush the heater core with VERY light pressure from the hose, Especially on an XJ that could have a load of sludge and crap trapped in it.

[@Smilex53]

Man, that was a great video. Well explained but simple for the layman. You guys that do these videos honestly are helping a lot of people in the world. Even if it might seem like a simple thing to do for some. Much thanks!

[@autumnwinter15]

Good video. One thing I did additionally on my 99 XJ was back flush the heater core since my heat was lukewarm even after a thermostat change. Boy did I get some great heat after that . There is a very simple video on doing that.....simply disconnect both heater hoses and run water hose through bottom heater core hose till all the junk comes out. Refill the whole system, let air burp out of cap with engine running and cap off. Fill your expansion tank to full line. Put rad cap back on after coolant wants to run out constantly. Took mine for a short drive, turn off, check level, add if necessary to expansion tank.......keep in min that the expansion tank level may go down as the engine cools so check your level after it cools and for good measure check your level for the next couple days and recheck for any hoses that may be leaking at the clamp area from being disturbed. Not a bad idea to replace all heater and radiator hoses at this time. One other trick I do while I'm in jeep maintenance mode that I do to every cherokee I own....yes I own a few, is replace all the battery positive and negative cables with an assortment Imget from the auto,parts store. I also run a new cable from battery negative post to one of the air compressor bracket bolts to give the engine a better ground strap than the deteriorated woven strap from the factory at the back of the engine near valve cover. One of my jeeps was burning out ignition could due to a weak ground and this fix cured that and also made the engine start up noticeably faster and the engine just feels much stronger after this simple and rewarding preventative fix. Happy jeeping!

[@autumnwinter15]

Ignition coils....my bad.

[@pauljensen9793]

You back flushed your ignition coil?

[@johnc5872]

My heat is really weak. I have a 01 jeep grand cherokee. About to replace the thermostat. Any ideas if that doesn't work?

[@justincady4457]

@@johnc5872 backflush heatercore

[@tomharrison7001]

Thank you . I think your attitude and explanation were great . Not at all patronising or cynical just clear and easy.

[@AdmiralOffRoad]

Thanks!

[@ShawnjHiggins]

Just got one of these Jeeps for 1k and I found this video. Watched a few more of this guys videos and now I know..... I HAVE TO SUBSCRIBE! Thank you so very much for the videos they are a great guide to getting me in the right direction for my new toy.

[@AdmiralOffRoad]

Thanks!

[@wesg3084]

Great tips. Thanks for the video. I'm getting ready to flush my 98 Cherokee out for the first time on my own and needed that advice.

[@phantomshtter]

"Don't spill it cause it kills animals" *Spills all over the place* LOL

[@AdmiralOffRoad]

ya that didn't work out as planned. Just had to clean up afterwards

[@phantomshtter]

Just thought that was ironic funny, I figured you took care of it. lol

[@TruckHomeSwitzerland]

Do you fill up the reservoir tank aswell after filling at the radiator gap?

[@ARBrenes]

Then he used the garden house to pour water so the antifreeze was diluted. The animals wont die drinking it but will probably get cancer. Anyhow, it was a very instructive video. Will try it myself. Thanks.

[@gearheadtechnology]

At least he tried... Most people will just let it go everywhere

[@steventure85]

My man, super helpful. Simple and to the point just how I like my youtube tutorials. Just picked up a 97XJ and I'm going through all my fluids/oils.

[@joshb9364]

Nicely done. It's a lot easier of a job than a lot of people think. Another option for a chemical flush is C.L.R. .....works like a champ!

[@AdmiralOffRoad]

Josh B That's a good idea. I'll have to remember that!

[@robertg262]

I was wondering if CLR would be good to use. Glad to know someone has already tested int and it works.

[@A.Rod32]

Best instructional video I've seen for quick Jeep maintenance. Easy to follow step by step and straight to the point of what to do and how to do it. Thank you!

[@blueridger28]

Hey, thanks for the info. I was getting ready to go in blind but im glad i found your video.

[@thebrokesoulone]

Brother, you just saved me 150.00 BUCKS.... SPOT ON. 1991 Jeep Cherokee Laredo 4x4 4 door.

[@AdmiralOffRoad]

Glad to help!

[@brandyf1932]

I'm updating mom's '91 (Limited Ed.) after it sat over 6 years, ugh.

[@pitot1988]

Great video, detail and clear description. Thanks for posting buddy!

[@AdmiralOffRoad]

pitot1988 thank you very much!

[@SandDownSouth]

Great video! Question though. How does the water flush through the engine via the top hose with the thermostat closed/cold?

[@swaltou]

Good job I like to see young guys fixing and repairing own stuff!!!

[@kris.monroe]

Huge help! Just got a '93 and this was big help.

[@AdmiralOffRoad]

glad to hear it!

[@turkturkleton6030]

Great instructional video! I'm trying to get an old Jeep running that's been sitting for a long time and you've been a huge help.

[@AdmiralOffRoad]

Thanks! Glad to hear it!

[@CaptDan-zk4tt]

Thanks, mine is a 2000, saw your video on radiator replacement, led me here now subscribed.

[@IShould.veKnown]

Nice truthful content and smooth modern editing. Good job kid.

[@damianndrums]

Excellent video, as always. I can't believe shops charge so much to do something simple. My dilemma is that I live in the city and do not have access to a hose. I can ask a friend, but I do not want to make a mess in his driveway. Maybe a DIY car wash place will let me get away with it..or ill just bite the bullet at a shop.

[@jerryking3431]

Great video by the way ,really gave me a clear idea of the correct way to do it.

[@kotaman232]

This is the ONLY good video I've seen on this. Keep it up!

[@AdmiralOffRoad]

thanks!

[@philliptaylor5981]

The only recommendation would be to show the results of doing the engine flush? Always fun to see that ! Great video!

[@dennisbraxton3770]

Thank you Now I can flush my wife’s radiator system my self without paying a shop an arm and a leg to do it. I did give you a thumbs up on the video.

[@AdmiralOffRoad]

Thanks!

[@infinphoenix13]

Thank you very much for this video. My 95 Cherokee SE will do very well in the Miami heat today.

[@AdmiralOffRoad]

+Grover Mitchell You're welcome!

[@brettcannon74]

Thanks for the video, I plan to use this to help me change my 99 XJ soon. What I can't understand is we need to use distilled water and yet you use city water to flush it out. Surely some city water is still in the system and could cause long term damage?

[@deegaw11]

About to flush my xj this weekend and would like to know the answer for this also.

[@Silversquirrel8]

Hey so I got to the top hose flush with the hose and it's just spewing right back out. Not going to the lower disconnected tube. What's that mean?

[@iriehiphopgirl]

Dude me too dammit

[@ethanwalton980]

@@iriehiphopgirl This guy had a defective thermostat, allowing the water to flow into the block. Another good way is to spray water through the heater hose that connects into the water pump. This is the bypass hose that bypasses the t-stat.

[@iriehiphopgirl]

@@ethanwalton980 thank you so much for the advice! I ended up flushing out the system section by section, starting at the heater core. I inherited my 92 Jeep XJ and my mom hadn’t flushed the cooling system in over 5 years…. It was a doozy. She’s running good now though!

[@laneyclaridge5065]

Question for all you good folks out there. When I pulled the top radiator hose off to start the engine flush, no water would go in past the thermostat. I had to pull my thermostat out before I could get water through. Is that normal or was this a case of a bad thermostat? The Cherokee overheated recently that’s the reason I got off my rear and decided to do my own flush. Living in Costa Rica, not only do I have language issues but have been warned repeatedly that the local mechanics shouldn’t be trusted. Thanks! And great video!!!

[@techinfoandhelp]

Bad thermostat snd do not put green coolant in a chrysler/gm vehicle it takes the orange/yelllow/red (OAT) Organic Acid Technology coolant/antifreeze or you will corrode the cooling system and all its parts with the green (IAT) Inorganic Additive Technology coolant/antifreeze

[@dustincmills]

That reservoir is held in with two 8mm screws. Takes 2 minutes to dump out and reinstall.

[@cdwalkman8401]

That reservoir doesnt have a outlet of any kind near the bottom so if you fill it with water like a giant DONG SLOBBERER! Just skip the 8mm part and go strait to COCK POUNDING your own FACE!!!!

[@zigzigzig]

@@cdwalkman8401 lol bro wtf

[@tollie1221]

These 2 screws are difficult to unbolt. Another solution is to disconnect the small hose from the canister but not on the canister side but on the radiator side. Let this hose hang on a lower position than the canister and the gravity will empty the canister. You can do an extra flush with the garden hose from the top op the canister.

[@shinriley]

I went to a mechanic shop and they told me they needed to flush my system out. They made it seem like it was a big deal and charged me 125 dollars to do it. Just finished watching this video and I'm incredibly pissed that I paid those fu#@ers that much money to do it!!!!!!!! Thank you for making this video. Now I can do this $#!% on my own.

[@AdmiralOffRoad]

sorry to hear that! glad to help

[@michaelkaybecker]

Jesse Riley well you got to remember time is money. It may not be that hard to do but probably took at least 1 hour. If the shop rate is like $95 and hour then you have to ad that to materials. It already cost a lot more to get someone else to do it.

[@MCatwar]

ngl coolant is something i stay away from. i’m not sure if i’d do this to mine

[@ricksuton6605]

tks for the video. gonna go out & try this now for first time ever...

[@RolandtheThompsonGunner]

Me too. How'd it work out for you?

[@heathsilcott5540]

I just want to know how you managed to get water to flow through the thermostat housing. If the thermostat is in place and functioning properly, running water into the top radiator hose should simply fill up the hose.

[@AdmiralOffRoad]

I found out later that the thermostat had actually failed and was stuck open. You would need to remove the thermostat to do this

[@TheRossillini]

What do you do with the old coolant when you’re finished?

[@KathyVaccaro-j2o]

Very good video you explained everything perfectly.❤

[@AdmiralOffRoad]

Thanks!

[@rickydecker8341]

i love driving this vehicle its fun to drive

[@Aaron-gm1th]

Hey! I was going through your video step by step, and I noticed when I turned my jeep on to let the flush go through the system that it started to creak here and there when I turned on the heat, is that normal?

[@rodsfrenchies]

Question if when I try to out water on the upper hose by the battery of water returns back does that mean my thermostat is open and doesn’t let water thru?

[@jerryking3431]

If I'm going to change the thermostat should I change it before or after I do my flush?

[@keyworksales6241]

Great guide. Just bought a 93 xj with overheating issues and just replaced the thermostat, water pump and fan clutch. Up next is a coolant flush for piece of mind. Hope that helps my problem. Is there anything I might be missing?

[@AdmiralOffRoad]

sounds like you've got the basics covered. If you continue to have overhearing issues you can get into fan upgrades and hood vents but i would do all of the things that you mentioned first because the other two won't do much if your cooling system isn't in good shape.

[@keyworksales6241]

Admiral Off-Road okay, and thanks for the quick reply! Gonna subscribe now 😊

[@leeschaefer81]

Drain wate,r

[@leeschaefer81]

Drain water

[@justinbarnhart2416]

Not sure if I just missed it but after you refilled the radiator at the end did you also refill the overflow?

[@enzov9772]

hahah "I don't want to leak out any onto the street" *proceeds to monsoon everywhere onto the street* good video though very informative. thanks bud

[@StormLaker]

It's too bad it doesn't drain as nice and neat as say...an oil change, haha.

[@AdmiralOffRoad]

If you are able to drain the radiator through the drain valve instead of the lower hose, it is less messy but still not neat by any means

[@StormLaker]

Neither way is. On my Jeep my issue right now is nasty sludgy rusty antifreeze that needs flushed out. I put down cardboard, and was really careful....and I still ended up with rusty spots on the concrete, haha.

[@user-uu8wy5xs1t]

You can catch it all and keep the rust off your driveway if your lifted by using a little wading pool. I don't know why everybody feels the need to criticize the boy for getting a little fluid on the ground

[@BostonianBroker]

I just took off all the Cooling system components on my engine and replacing everything. Can I just now or should I wait until I get all the new stuff back on? Thanks again as always Admiral -Fletch

[@coleperry1446]

When I spray water into the upper radiator hose water does not come out of the lower hose, it just builds up in the upper hose. Why doesn't mine behave the way yours is? 98 XJ 4.0.

[@MultiMckone]

When running water through the top hose, does it have to be warm to get through the thermostat ?

[@bbud22]

Can I take off the other end of the hose instead and have as good of a drain?

[@andersd3579]

Good vid! Imma bout to do this on my 95' XJ. This video was great inspiration and helpful - thanks!

[@AdmiralOffRoad]

Glad to hear it!

[@shaggyone3924]

back flush your heater cored while you're at it...

[@AB714AA]

Shaggy one how did you do that?

[@maxanghera376]

did you use distilled water for when you cleaned it through? and how did you get it to be pressurized through the garden hose

[@gilbertperez8002]

Great video. I'm wondering why my jeep is overheating. I also noticed the coolant isn't draining from the reservoir. It seems like its not going through the system. What could be causing this???

[@scottbradley2503]

Great video. Very easy to understand and follow. Thank you.

[@AdmiralOffRoad]

thanks!

[@StormLaker]

I took the thermostat out of my 95' today. It came out quite easily. Getting it back in with that lower bolt not clearing the serpentine belt- stupidity on Chrysler's part:-(. So now my 10 minute repair is going to take me half the morning tomorrow to put it back in- grrrrrr! This video was of great help, that petcock doesn't do anything to drain off the cooling system, you gotta pull the hoses! My other "DOH!" for the morning was having my bucket in the wrong place- my neighbor walked up to say good morning and have a chat for a few minutes, and I wasn't paying attention to where the water/antifreeze was falling. We got it cleaned up. TOmorrow I am flushing my heater core- always make sure you do that when you flush your system!

[@AdmiralOffRoad]

glad the video was helpful! That seems to be the way it goes sometimes. A 10 minute job turns into a much larger job because of one stupid bolt or part in the way

[@StormLaker]

Now I have a cutoff tool just in case...haha. I have a feeling when I go to put in my lift next year it will come in handy..along with my reciprocating saw and my breaker bar/pipe setup. I might spring for a 30 gallon air tank and an impact gun before then, haha.

[@AdmiralOffRoad]

StormLaker1975 i did my first lift without an impact and my second one with an impact gun and it made it so much quicker

[@StormLaker]

It's on my wish list for Christmas, haha.

[@JagexAnarchy]

Would running water straight to heater core hoses with the heat switch turned to high and the jeep off be a better way to flush heater core or is running water through the lower radiator hose like you did doing the same thing?

[@kd6844]

thanks a lot. I was wrestling with that stupid plug for an hour before I found your post

[@AdmiralOffRoad]

+K. D. Mann I tried to get mine out first too. Not sure why they made it such a pain to get to and remove.

[@kd6844]

+Admiral Off-Road I would even prefer your hose clamps. my 99 has the clips which are more difficult in tight quarters

[@AdmiralOffRoad]

+K. D. Mann that sucks. The hose clamps are pretty easy.

[@AdmiralOffRoad]

+K. D. Mann By the way, I think you're subscriber number 600! Thanks!

[@NicoleHerrickDIY]

Awesome video, so easy to follow. Thanks mate.

[@AdmiralOffRoad]

+NicoleHerrickDesign Thanks!

[@DiscoDashco]

When i try to run water through the “rest of the system” via the left hose facing the engine ~5:50, I discovered something was blocking it, like a valve of sorts was closed. The water just shot right back in my face when I turned the water on. What gives?

[@AdmiralOffRoad]

Your thermostat is blocking the water. This seems to happen to some people and not to others. You can remove the thermostat from the housing, reattach the housing and flush. Then put the thermostat back in. The thermostat housing is held in with just 2 or 3 bolts. If you need help with that, I do have a video on how to replace the thermostat. Hope this helps!

[@teninchrichard4016]

@@AdmiralOffRoad if I've read correctly you can push water through the small hose that goes to the thermostat it's open constant.

[@sonjahjh]

thank you admiral. my 2000 jeep actually started doing this on me and I cant drive it. I figure it could be clogged so that is what I am going do tomorrow before work.

[@taajbarnett2976]

What was wrong with your Jeep? I have a 2000 Jeep Cherokee too. But mines keep over heating. I don’t have any coolant in the coolant reservoir tank.

[@AdmiralOffRoad]

kevin tyree, how much water were you able to put into the upper hose before it started coming back out the top? Sorry im not able to reply to your comment directly. Not sure why KZbin is not letting me.

[@bobhuth]

I'm having the same problem. Tried running water through the top hose and it just filled up and didn't drain from the bottom. It only took a few seconds for it to fill up. Possible clog in the system? I'm doing this flush because my 93 grand cherokee keeps overheating at idle.

[@justinashdown2938]

bobhuth Hey man, make sure your fans are spinning and the fan shroud are not damaged. You know you radiator is likely working as it's cooling while your driving. IE there's enough coolant going through it to be cooled by airflow.

[@N8TVEGUM8Y14]

+bobhuth Try taking your thermostat out.

[@MrWb999]

waiting to long with the cleaning, or not using destill. water, or based on a defect, the thermostat is always in the close position, img0.uploadhouse.com/fileuploads/22565/22565840cdc01ca6d33cb5e55901d880971cc01e.jpg that caused the overheating problem, cause the cooling system hasn`t a proper circulation.

[@Robin4567Reinhart]

99 Jeep Grand Cherokee brake control wire location

[@utistudent099]

Any cylinder head cracks yet? Mine just cracked between cylinders 3 and 4 which is the typical spot. If you crack since this is a design flaw on the 0331 head for 2000 and 2001 get a TUPY head or one from Alabama Cylinder Head with a very improved casting.

[@michaelbaker9801]

I picked up an 89 XJ and the thermostat-heater core and water pump-heater core hoses were taken off. They also have the “T” inline for the pressure tank. My goal is to install the coolant filter but not sure where the four ends are supposed to be in accordance with the filter housing. You have any pointers?

[@justinalvarado5234]

My coolant looks clean and full but still going to clean the system, but I have one question: my coolant reservoir seems to drain very quickly so I sometimes run with no coolant in the reservoir, but the engine doesn't overheat. Do you know why this would be?

[@taajbarnett2976]

How do you know when you’re completely done putting water or coolant in the system??? That’s the part I’m now confused on.

[@mr.giggles1344]

Thank you Justin Beiber for saving my xj

[@RobertS.CloughJr.]

very descriptive thx

[@RobertS.CloughJr.]

my fluid is like maple syrup

[@LVcubers]

Nice video! I have a question,amm ,i did evertying like you did ,but when i remove the second radiator hoes or how you call them ,i cant pour water in there ,becaus it doesnt go throught all the way to my bucket ,or i did something wrong? Have xj 1995.

[@AdmiralOffRoad]

LVcubers if you have that problem, remove your thermostat. It is blocking the flow. It seems about 50/50 on people having that issue

[@LVcubers]

Admiral Off-Road Thanks! It worked!

[@AdmiralOffRoad]

glad to hear it!

[@stx-boyz8553]

Great video just did my 99 xj

[@nancybell7689]

Help I’m a 63-year-old female and I’ve done everything you said but I can’t get the water to flush through the engine from the top radiator hose. I called my mechanic and he says it’s because my engine is cold in the thermostat has it shut off. Not sure what to do. When I went to refill the car I could only get in 1 gallon of antifreeze in about a half gallon of distilled water. I feel like there’s something going on between the top radiator hose inside the engine block because the check engine light keeps coming on, but I don’t know how to get the Flush completely done.

[@affy619]

What if the water isnt flowing through from the upper hose and the lower hose

[@rickmoranis82]

What if your heater core is broken at the moment do you have to run it through it?

[@techinfoandhelp]

No sir but you will not have heat in your car until its fixed

[@kevintyree7365]

any thought? so i tried doing this and when i got to the top hose. i tried putting water trough it but it just filled up. like the water was getting stuck somewhere. the water never went trough and came out the bottom radiator hose. 2000 xj sport 4.o

[@doubledmetaldetecting9582]

having the same problem

[@teninchrichard4016]

@@doubledmetaldetecting9582 the thermostat is closed. If I've read correctly; push water through the small hose that goes to the thermostat it's open constant.

[@tonytherrien6100]

he failed to mention he pulled the thermostat out obviously so the video is incorrect and would fail to flush anything from top rad hose! And my cat is dead from that coolant he left in street! no thermostat= no cooling , no flush =no fix

[@JuanRodriguez-gq5fq]

I tried to put water in the top hose and it seems clogged what can I do

[@casabella2132]

Thank you for sharing your knowledge. Do you know why my jeep's horn keeps activating itself, this is a very annoying problem. Thank you again.

[@AdmiralOffRoad]

I had that happen to me once. I ended up disconnecting them for a few hours and when I connected them again they were fine. I think the connection can get loose at the horn itself and make the horn activate on its own

[@JagexAnarchy]

Not sure if you fixed problem, but there is a fuse that if removed, will turn off horn. Also if your check engine light is on, get codes read. If it says clock spring,that is your problem. Bad clockspring sends high voltage to the TPS causing rough idle and also makes your horn go off nonstop

[@romanomarko]

When you used the hose it wasnt distilled water right? Does completely flushing it after make it ok to use hose water? or should I flushed with distilled as well

[@romanomarko]

also, you added everything directly through the radiator..should I fill up my coolant reservoir with 50-50 (assuming it hasnt after running to operating temp)

[@AdmiralOffRoad]

Hi Mark. That's correct. The hose was just normal water which is why I emptied the system again after running the hose through it. If you have enough distilled water, then you could run that through the system as a final flush as well since it is impossible to completely drain the system. To answer your other question, yes you should also fill your overflow reservoir to the proper level.

[@romanomarko]

Admiral Off-Road sounds good thanks man

[@AdmiralOffRoad]

Mark Romano no problem. and good luck!

[@johnevans8522]

Great instructional video. Thanks.

[@shinjihns8751]

Hey great video, gonna flush this weekend.

[@davidcatalina6029]

Quick question, how did the water get passed the thermostat when putting it directly into the top of the engine? Wouldn’t that mean your thermostat is stuck open? Cause mine doesn’t let anything flow in from the top and I just did a thermostat and water pump.

[@thomascolbert2687]

Watch the beginning. He warmed the motor, then shut it off. He then disconnected the hose just after it cooled enough so the system was no longer under pressure. The heat from the block keeps the thermostat open, so water can flow through the block.

[@eleveneleven572]

Thanks mate - just the video I needed!!

[@AdmiralOffRoad]

Tancred de Beaumanoir Thanks for the share!

[@superchew9121]

Not quite sure how your system can be flushing through the upper rad hose without your motor running to open the thermostat?

[@roadkingrv8178]

I had the same question. 1995 4.0

[@techinfoandhelp]

Probably has a bad thermostat because it was cold enough to change and not bubble over which means either he has a bad thermostat or he is running a really low spec thermostat; OE is 195°F

[@dianac2783]

1999 Jeep cherokee sport 4.2 6 cyl. Great video, easy to do. I also changed the coolant sensor as well because my gage stopped working, it's working great now, temp is reading a constant 210 when vehicle is warm. The issue now, is I lost all my cabin heat! The heater was working great when I ran the coolant cleaner through it, and after the coolant change for the first day. But today the heater does not blow hot air anymore, just cool. The blower is working fine. Any clue why? Thanks for your help!

[@AdmiralOffRoad]

Sounds like some air trapped in the system. The heater uses the hot coolant to warm the air that the heater blows into the cabin.

[@CoreyMills-l5t]

Excellent job bravo 💯

[@murphnturph2664]

So how do I go about bleeding or burping my coolant if I have no heat? 😅

[@mlsthirteen13]

I know it’s bad to use tap water when you fill the system to run. But is it worth it to fill it with distilled water when you flush it too? Or is this overkill

[@doomid23]

Awesome thanks for video! Just what I needed!

[@AdmiralOffRoad]

Doomid 23 glad it helped!

[@GrandMasterEmizo]

Can jackstands do the trick if it isn't possible to put it uphill?

[@AdmiralOffRoad]

Meta Mein jack stands would work fine or even just putting the font tires on a curb. As long as the vehicle is leaning back putting the radiator cap at the highest point in the cooling system, air bubbles will travel to the highest point allowing you to burp the system and get rid of all of the air.

[@zombieapocalypsecherokee9224]

Hey Admiral great video i just replaced my fan clutch radiator and water pump and serpentine belt on my 92 cherokee after doing all this i looked in my original owners manual and iv never seen or heard of this but there is a engine block plug under the manifold for the coolant flush it said to leave the radiator cap on and remove the engine drain plug and drain cock and supposably it will drain everything the over flow and block everything do you know if this is not recommended ? Also i know you live in AZ where its all ways hot what temp does your cherokee run at ? I had mine jump to 230 while 4wheeling on the beach and i read that it is NOT uncommon for it to go that high but normal operating temp is 195 and thats why i changed everything now it goes as high as 195 but at night when its cool it doesn't go over 190 which im happy with but i worry when im on the beach again that it will shoot up again under the heavy strain does yours ever go up to 230 when 4 wheeling ? Thanks Admiral

[@baysidewise]

Great videos I am doing this twice a year before summer and then again before winter. Only step that Is recommended is to blow the hose water out with air from a compressor. I actually used a small portable desalt leaf blower. Probably not a big deal but the theory is the minerals in the water from your hose will cause issues.

[@gabrielcontreras8697]

Does it matter where I disconnect the lower radiator hose? The part that’s attached to my radiator is hard to get to but the one attached to my water pump is more accessible

[@AdmiralOffRoad]

nope, thats fine

[@_JEBUS]

Should mention that the thermostat being closed won't allow for a full flush of the engine block and removing it is not advised if you dont have to. Bottom bolt is a pita and the design of the housing is common to leak. Dont mess with it unless of course the stat is bad and needs replaced.

[@Gravexero]

How are you flushing the upper radiator hose with the thermostat? Mine blocks all the water.

[@AdmiralOffRoad]

you might have to remove yours. Not sure why some people have to and others do not

[@tommysmith7232]

Admiral Off-Road if the thermostat is blocking the water, do you still run the water through the upper hose?

[@MarkAdamsOnline]

Hey man, thanks for this video. Before I do this I was wondering... how long did you run the Jeep while it had the water/flush cleaner in it? Thanks!

[@AdmiralOffRoad]

***** Hi Mark. i ran the jeep just long enough for it to reach normal operating temperature (210ish). it took about 10 minutes or so.

[@MarkAdamsOnline]

Cool, thanks so much! I'm looking forward to doing this. It's amazing how much car maintenance is easy to do if you just know how!

[@SteveJud43]

Dumb question, but if you are running the water under pressure through the system is it necessary to run the garden hose water through the system? Wouldn't the water under pressure when clearing the heater core do the job?

[@AdmiralOffRoad]

+Adam Mooberry Not a dumb question at all. Running water through the system via the hose is a way to flush out the rest of the coolant trapped in the system. The pressure of the the coolant flowing through the system might be enough to keep buildups from happening, but the dirt and debris will be suspended in the coolant still in the system. Just disconnecting the lower radiator hose will not completely empty the system. running water through the system via the hose helps to flush out the rest of the old fluid before refilling with new fluid.

[@SteveJud43]

+Admiral Off-Road Thanks for the info.

[@AdmiralOffRoad]

+Adam Mooberry you're welcome!

[@MileytheJeepV2]

Good video my cherokees coolant also looks like that so im gonna do this and hopefully thatll be problem solver.. It only overheats on real hot days

[@AlecDaStar]

Does this work on 1999 Jeep Grand Cherokee

[@crownviclvr]

I noticed my lower radiator hose is a few inches before the very bottom of the radiator will I still get a good flush without undoing the drain plug

[@AdmiralOffRoad]

the water flowing through it should be enough to flush out anything in the radiator. There is nothing wrong with using the radiator drain plug. Mine was just stuck so I went with the lower radiator hose instead

[@gebeme11]

That was super useful. Thanks man.

[@droma2366]

Alright, just a heads up for whoever lands on this video. It is not as easy as the video makes it to be. 1. Removing the hose clamps is easy but installing it back, specifically the one by the air filter is very hard. Space is limited. 2. They drain 3 gallons of coolant but when you try putting back 3 gallons, it won't take all 3. I was only able to get 1 gallon of straight antifreeze. I regret not buying the 50/50 mix since 1 gallon of that would have been better than 1 gallon of straight coolant. 3. Flushing the fluid from the top hose, nothing came out. Dont know if i wasted 10minutes of just making a mess. 4. These do yourself videos make it easy. But i wish i could have my 2.5 hours back. I will pay jiffylube the 150$ they quoted me before trying to do the job myself. I ended paying over $50 for gallons of straight coolant, distilled water, and hose clamps. This is easy if you have time to do it. I had to get the kiddos fast food for dinner cause this took longer than it was worth doing. Yes i was at an incline nose up.

[@techinfoandhelp]

I think he failed to mention his thermostat is out or he is none the wiser it will not flow back through the return hose unless the thermostat is broken or not there

[@ericunderwood1186]

Great video man, I'll be doing mine soon.

[@AdmiralOffRoad]

Eric Underwood Thanks!

[@nathanmcallister3736]

Great video, thanks for the help

[@jacksonhill8032]

My upper radiator hose in the top left doesnt drain, it backfills and flows out the end im filling from. Is there some blockage or does it need pressure to be pushed through?

[@AdmiralOffRoad]

you might need to remove your thermostat. I was able to get water passed mine, but i know some people have run into your same problem.

[@jacksonhill8032]

Admiral Off-Road Thanks for the reply! Do you think there any way to open up the thermostat without removing it? Or to flush it from a different tube other than just the radiator fill cap? I don't want to have to mess around with a new gasket if i don't have to. I started flushing the radiator but now i cant get water through the upper hose so i have no idea how much of the old coolant is still left in the system. Am i screwed and just need to get to the drain plug behind the radiator?

[@Geemoe4663]

When I run water through the upper hose to clean out the system it doesn't come out of the bottom hose. Do you know what could be the issue?

[@AdmiralOffRoad]

yep, for some people, the thermostat will not let the water flow through. You can remove and replace it at the same time (which is a good idea anyway). If you have any questions on how to change your thermostat, I have a video on how to do it.

[@cjsmithfl]

If you’re able to fill/flush from the upper radiator hose your thermostat is possibly bad/stuck open. Just a thought.