JEEP ZJ 4.0 COOLANT FLUSH AND THERMOSTAT REPLACEMENT IN A 1998 GRAND CHEROKEE

[@digitaldreamer5481]

Everytime I need to replace something on my 2001 Jeep Grand Cherokee 6L 4.0, I like watching videos first to learn something and to get myself into the right frame of mind for the job at hand. Today, I’m going to replace the thermostat and lower rad hose after it overheated a few days as the wife was driving home from work and luckily it happen in the drive thru at Jack in the Box and was able to park it right away. Got a check engine light over a week ago that the engine was running too cold, which is laughable here in Hawaii. Wife shot a quick video on her iPhone showing me that the water was boiling inside the reserve bottle. I’m thinking the thermostat was stuck in the open position, which is almost the same as not having one at all. Replaced the water pump about 6 months ago, so I am hoping its just a slight leak in the lower rad hose, if not, will need to replace the water pump again. Great video on the thermostat replacement, especially using the box wrench as a guide for the lower bolt. Wish me luck!

[@ProjectDanH]

good luck with your fix! thank you for watching 💪

[@digitaldreamer5481]

Aloha Dan, well, I still haven’t done the thermostat yet and discovered a few new details. The overheating problem is being caused by a number of factors. First, I discovered that my three year old radiator has a small leak at the bottom corner and the electric fan doesn’t come on, which probably lead to the small leak of the radiator in the first place. Plus the intake hose for the heater coils has a bit of swelling where it clamps to the thermostat housing but can fix that easy by trimming off one inch and reconnecting the hose when I replace the thermostat. Even though I did my best to flush the engine and radiator six months ago when I replace the water pump, I did not flush out the heater core because we never use the heater here in Hawaii, lol! So I will test the electric fan and the fuses to see what the issue is there. Worst case scenario, I’ll need to replace the radiator with my stimulus check I just got last week, what get timing, lol!

[@garyhowell738]

I bought a 2000 XJ with a 4.0, and the previous owner used a shop that doubled down on coolant stop leak. Just replace the leaking parts, freeze plugs in my case. Needless to say I had a job ahead of me. Used a chemical flush, but first blasted water through my system about 3 times (brown water each time). It's a good idea to flush your heater core both directions to remove any blockage. After the chemical flush, I flushed with water 3 times (brown water again). Refilled with coolant and it's still green a year later. The reason it was being sold was it didn't heat up for the winter. I know the irony

[@ProjectDanH]

LMAO! Great score! Sounds like your system was gummed up like my radiator! So many brown chunks!

[@ryankersell2505]

Little late to the party but just got a 96 zj last year and my coolant is looking pretty bad i get almost no heat at all. Definitely gonna follow this video and see what i can do on my own. Appreciate the help friend!

[@ProjectDanH]

That's great! It's never too late to fix it!

[@airsoftmasterpistol1]

Who wouldve thought to use a kiddy pool. Love the idea im gonna try it out

[@ProjectDanH]

haha, I use that pool for everything! Its probably caught enough coolant to save the lives of dozens of kittens!!! 🙏🤣🤣🤣

[@robertbrodarick9607]

Three Amigos! High five on this project. So satisfying to watch and great transitions. Thanks for yet another well thought out project

[@ProjectDanH]

Thanks Robert! I always appreciate your view!

[@drgil65]

Kiddy pool as a giant drain pan, awesome Dan

[@ProjectDanH]

Lol. Thanks man! Gotta catch that garbage 😂

[@DEInTheGarage]

Thanks for the shout out buddy! Teflon tape has literally saved me more times than I can count

[@ProjectDanH]

No, no, thank you! I love the way learning new tricks makes you never turn back to the old ignorant ways! 😁

[@JoeVizethum]

....sweet cooling water - good taste - like those funny splashy accidents in your video !

[@ProjectDanH]

lol.. gets me every time

[@danhambrick6331]

Awesome job buddy!The small hole in the heater hose is crazy.Who would ever of thunk that.I hope your wrist gets better Dan,best wishes....

[@ProjectDanH]

I know right? It blew my mind too! haha. Thanks Dan!

[@30AndHatingIt]

You’ve got a plastic tapping sound coming from your engine. I’ve got the same thing… it doesn’t sound like regular lifter knock. What do you think it is?

[@DEInTheGarage]

WHAT?! That heater core trick is legit!

[@ProjectDanH]

haha! yea... until I sizzled myself on hot antifreeze! haha I should have done it before it warmed up🤦‍♂️!

[@erikstrieter4233]

Over the winter my water pump went bad. I swapped my thermostat out while I had everything already out the way. Didn’t need to be done but I figured for only a few bucks it was worth doing. Being the winter I wasn’t able to do the flush but did replace all the coolant.

[@ProjectDanH]

Yea man, good call on the thermostat. that layer of crud that builds up keeps it from working as well as It could. A flush is best done in the summer when you can get soaked and wont freeze to death! lol

[@michaelb2226]

This and the waterpump were the first things I did to my 4.0 a few months ago when I first got it

[@ProjectDanH]

Those are 2 excellent maintenance issues to tackle! great job!

[@michaelb2226]

@@ProjectDanH very tedious. Especially removing the fan and fan shroud. Has to be simultaneous

[@ProjectDanH]

@@michaelb2226 yes. There's definitely not enough room up there. It's good to pull the radiator too

[@michaelb2226]

@@ProjectDanH oh btw the bolts for the thermostat housing is between 20-25 ft lbs. I did 22

[@ProjectDanH]

@@michaelb2226 thank you! I always average hi And low torque specs too. Lol

[@CoreyMills-l5t]

Good job bravo 💯

[@ProjectDanH]

Thank you

[@tylermartelle7041]

Not sure if this has been noticed or not but when you look closer at the old thermostat you can see its stuck open and missing the inner rubber seal 19:36

[@robertdurant7176]

Well done guy I also have a takoizhe car I suffer I pour antifreeze the air plug does not go away the temperature immediately increases. Spare parts are expensive and we have a shortage. Greetings from Siberia! I write through the translator so I'm sorry if that!

[@ProjectDanH]

Hey brother thank you so much for watching and I appreciate your input 💪

[@jorgeenriquemassipenriquez5351]

Hey Dan. You are the men brother. Thanks for everything you have help me with. Keep going. 👍👍👍

[@ProjectDanH]

Thank you so much for watching brother!

[@TheValthar]

I haven't even watched the whole video yet, you had me with the pool though x'D

[@ProjectDanH]

Lol!

[@roialblu]

Great work mate - again! Best wishes for ya wrist!

[@ProjectDanH]

Much appreciated, Thanks alot brother!

[@PSNxMigls]

Great video, my 95 ZJ5.2 will be getting a similar treatment soon! Great attitude and tips🎉

[@ProjectDanH]

Excellent, treat em right!!! Thank you for watching!

[@edman1015]

Get you one of those no leak funnels - this also gets rid of all the air

[@ProjectDanH]

Thanks Charles, That's definitely on my list of supplies to get! 😁

[@bart055]

Great video Dan!

[@ProjectDanH]

Thank you Bryan!

[@Mainsail333]

Thanks for the video, glad I came upon this getting ready to do this project.

[@ProjectDanH]

Welcome! best of luck

[@Whiteandsonsgarage]

Awesome video mate, so important to keep your Jeep cold

[@ProjectDanH]

Absolutely! Thank you brother!

[@rayoliver6807]

THIS ENGINE IS A 76 YEAR OLD NASH 600 SUPER6 THE OLE 224 BACK IN 1937 ,ITS A LOOP COOLANT DESIGN MUCH BETTER THAN THESE NEW JUNKS OF TODAY!OLE SCHOOL TRICK YOUR REAR VALVE COVER LINE ,JUST PUT A LARGER LINE GOING TO THE INTAKE YOUR ENGINE WILL RUN 180 CONSTANT,WE DIS THIS BACK IN THE1960,S

[@deHakster]

Hey Dan, proud Dutchy owner of a ’97 GC … when ever I run into something I just pop up your channel… or just for fun to check your projects :-) … just a tiny remark on the brush wheel: you might wanna wear leather gloves when handling the drill: slip of the hand and OUCHHHHH , new skin will grow but wait a while… ;-) Cheers from the Netherlands! Hak

[@ProjectDanH]

Thanks Hak! You're absolutely right... I've been trying lately to do better to promote safety such as gloves and glasses.. cheers!

[@nathanr.6542]

Hey man , Im really thankful for this upload ,keep up the great work . Im going to flush my next jeep

[@ProjectDanH]

You are very welcome! Good luck with your flush!

[@mikeespo7728]

After 45 minute I'll bet you were tempted to crack open that Tito's...nice video

[@ProjectDanH]

lol! temptation always lingers 🤣

[@mgiangola]

I usually attach my fuel nozzle to my turbo blower. Then the thermoregulator can hit its optimal RPVs. I find I need less oil and as a bonus, when I stick my arm out the window the flare shooter really pushes my biceps out. Jk. Awesome stuff, I can listen to this and not even own a Jeep!

[@ProjectDanH]

🤣🤣🤣 don't forget to grease your muffler bearings for optimal charge on your flux capacitor. You can never have too many jigawatts!

[@garyhowell738]

Don't exceed the 1.21 gigawatts, trust me

[@ralphcampisi9696]

Hey Dan, great video and a lot of laughs. I’m going to replace heate core in my 2002 WJ 4.0. When I’m removing doing this job what else should I be replacing , attenuators /damper doors motors etc…?

[@ProjectDanH]

I would absolutely replace the blend doors / mode doors and their motors. God bless!

[@314jeepsnmopars3]

Referencing this tonight for my thermostat 😅

[@rayoliver6807]

Just an old school mech ,52 years of turn in wrenches going on 70 not even slowing DOWN! GET A T PUT IT IN THE RETURN SIDE HEATER HOSE THIS WILL TAKE CARE OF AIR + EASY FLUSH!!

[@ProjectDanH]

excellent tip!

[@rayoliver6807]

@@ProjectDanH BACK IN THE LATE50,S AND 60,S THATS HOW EVERYBODY FLUSHED QUICKY STYLE,AS YOU DOES THIS SPRINKLE A LITTLE BAKING SODA IN THE ALKALINE BASE WILL MAKE RADITOR AND HEATER CORE SPARKLE CLEAN,BACK THEN MECHS. SENT THE CORES OUT TO BE CLEANED THIS WAS THIER METHOD!!PLUS IT MAKES THE ALUMINUM SLICK!I,D WISH I HAD KEPT 3 OF MY CARS BACK THEN! 1. 1968 SUPER CUDA XX 440! 2. 1971 HURST 442! 3. 1974 INTERNATIONAL SCOUT 260 I 6 ! THE FIRST TWO IN MINT CONDITION TODAY WOULD BUY A SMALL FARM IN HOUSTON CO. TENNESSEE.THE THIRD ONE WOULD BUILD A NICE CABIN!!!WELL I WAS YOUNG AND CARE FREE!!THATS HOW IT GOES!

[@ProjectDanH]

@@rayoliver6807 oh man! Dream cars! At least you owned them.. I might never even drive one.

[@reigelsjourney2016]

I know you know a lot about Jeeps because I see it on your videos I am running into a bit of a puzzle with my 98 Jeep Grand Cherokee I'm getting a cold for crankshaft position sensor replace sensor now it won't start what am I doing wrong

[@ProjectDanH]

Have you replaced your CPS? kzbin.info/www/bejne/aITCpIGgmLKDodU

[@lorenaalvarez319]

Great. Hope this fix the heating problem in mi jeep.

[@ghostcontactparanormal]

Are the heater core hoses supposed to get so hot they can burn your hand? Mine does.

[@ProjectDanH]

yep... Jeeps are operating at 200 degrees... thats hot bro!

[@ghostcontactparanormal]

@@ProjectDanH Thanks. My jeep still goes to about 230 or higher on the highway.

[@JoeVizethum]

Dan - coolant flush is on my plan this weekend - if you want to flush the engine block, would I need to remove the t-stat + housing, or can I do this via the water pump inlet from the heater core return hose ? Thanks !

[@ProjectDanH]

the thermostat would block a lot of flushing volume so you might as well take it off and replace the thermostat while your at it

[@JoeVizethum]

@@ProjectDanH thanks, pal - have done as advised.

[@ashleyperezperez8377]

For flush the heater i have flush the radiator ??because im allready flush the radiator but no the heater line.

[@ProjectDanH]

You don't need to. If your radiator is already flushed you can just do the heater core. 😁

[@DEInTheGarage]

Hope you feel better Danno. Hopefully you have enough backlogged content to get you through until your wrist is 100% again

[@ProjectDanH]

Thanks Buddy!

[@airsoftmasterpistol1]

The two valves on top of valve cover (one is a PCV i think, other might be a exhaust valve) those have a tendency to leak, if you change those can you make a video? Thanks

[@ProjectDanH]

Sure, I hate those valves! so brittle! lol

[@airsoftmasterpistol1]

Project Dan H just did my PCV valve and if youre going to do it be prepared to buy another PCV to intake hose because that bad boy isnt gonna want to come off! Haha

[@ProjectDanH]

@@airsoftmasterpistol1 yep! Brittle AF lol

[@ryanellis5902]

One is PCV (Positive Crankcase Ventilation) and the other is CCV (Constant Crankcase Ventilation.) Just be prepared to replace everything.. grommets, elbows and hose attachments. I put a new valve cover gasket on my 4.0 and replaced everything on the cover with new parts.

[@TheBeardedJeeper]

Great video brother take care of that wrist

[@ProjectDanH]

Thanks man! will do!

[@1stzjtruck706]

I’m going to be doing that heater core trick thanks for showing us

[@ProjectDanH]

You're welcome Man! Definitely do it quickly before it gets too hot!

[@wyattcanavit7953]

I have 4 rims off of a 1998 jeep grand cherokee 5.9l limited if you are interested. Also, I have the trim off of it too.

[@ProjectDanH]

Sure! Thanks for thinking of me. Where are you located?

[@maniacalmonster2293]

about how much water is left in the system after doing this? Did you already accomodate for that? Im trying to accomodate for it but if I just do 50/50, do you just add until full? Wont there be too much water ratio?

[@ProjectDanH]

Mix your own coolant with distilled water, if you disconnect the lower rad hose you should lose about 90% coolant

[@YurrrPy]

Im having trouble putting my petlock back on even with the tape it still leaking from the stem of the radiator plug probably going to put a brand new plug see if thats work wish me luck 😊

[@jeremiah1797]

mines too i had to put alot of Teflon to stop that leaking

[@YurrrPy]

Did it work about put more than one strip of tape on the petlock see if that works before i buy a radiator ​@jeremiah1797

[@GoatOffroad]

But I like making my own distilled water! 🤣 J/k! Great attention to detail. Love The 3 Amigos!! What happened to your wrist? Did you tell us how you injured yourself? We’ll be thinking and praying for you! Keep us posted!! ❤️🐞

[@ProjectDanH]

Lol.. well get together and make a delicious batch of distilled water 🤣🤣🤣 . Thanks for the prayers and the love Bug! (Insert the love Bug movie quote here) I'll keep you posted on the wrist. Hopefully it'll be over with soon

[@phatbuddha1]

@@ProjectDanH I guess I could make some distilled water when I take a break distilling moonshine. 🥴

[@GoatOffroad]

Project Dan H - liked your soccer skills in the beginning ⚽️😂

[@ProjectDanH]

hahaha! I used to be a goalie

[@ProjectDanH]

haha! watch out for that methanol 😎

[@Chrisw678]

Can you give and update? Done this so many times and my coolant is mostly green finally but took so many flushes.

[@Chrisw678]

Sorry. Hadn’t watched the end yet. Mine slowly gets less hot over time and slower to blow warmer air. Great vid none the less.

[@ProjectDanH]

@@Chrisw678 Thanks man! I think a bad blend door could be your issue. Perhaps it never opens and closes completely never allowing the hot air to come all the way through

[@Chrisw678]

Project Dan H true. But it’s real hot after the flush for a few days. I think the heater core is just too far gone to be 100%.

[@ProjectDanH]

Yea, i suppose so. Maybe there is still a permanent blockage in it

[@legacyloco1920]

Does this year have obd 2 ? I'm trying to buy a jeep that's a 1997 jeep but needs work.

[@ProjectDanH]

Yes. My 1998 is an Obd2. I believe all vehicles 1996 and up are obd2

[@richardbatchelor3024]

Hi Dan, My name is Rick I follow you all the time. I have a question, I have a 99, 2000,2001 Cherokee sports. My 2000 and 01 are making a shaking abs sputtering when you start it. Or runs rough. What do you think it would be? Maybe plugs? Thank you hope all is well. Rick Batchelor

[@ProjectDanH]

I'm doing well Rick, thanks for asking. Because its an 00 and 01 I'm gonna say heat soak (common problem) ... Im gonna take a guess and say this only happens on a Hot restart right?

[@rayoliver7244]

It could be any of many things,first get you OBD1 CODES.THE 4.0 ENGINES HAVE A EXHAUST MANIFOLD DESIGN FLAW!AS YOU INCREASE YOU SPEED THE ENGINE WILL TILT JUST A LITTLE JEEP DID NOT FIGURE THAT A HOT DOWN FLOW PIPE WILL CRACK BINGO !EXHAUST LEAK OX2 SENSOR SENDS A LEAN CODE,TEMP AIR SENSOR READS IT ECM TRYS TO ADJUST THE ENGINE HAS MISS,STALL,SHUTTER,DIES$82.00 EXHAUST MANIFOLD 2.5 HR LABOR,GET A NEW COOLANT TEMP,AIR CONTROL SENSOR,TAKE OFF NEG CABLE TOUCH IT TO A/C COMPRESSOR GET IN JEEP PUT FOOT ON BRAKES !!YOUR MEMORY HAS A NEW FRESH START POINT.3 TO 5 NORMAL DRIVE TRIPS AND THE COMPUTER WILL RELEARN THE PERFECT ADJUSTMENTS AND SETTINGS,BY THE WAY JEEP 4.0 ONLY USE GREEN ANTIFREESE!! NOTHING ELSE,YOUR OLE RETIRED JEEP ASE MECH.FROM TENNESSEE ,THESE 4.0 are 65 YEARS in the making,HUDSON/AMC/CHRYSLER/JEEP. AND THAT'S THE REST OF THE STORY GOODDAY!

[@plsniper]

My thermostat came with a black rubber ring around it. Did they give me the wrong one?

[@ProjectDanH]

I know some come with that kind of gasket but the ones I have used doesn't have that. if it works use it 👍

[@plsniper]

@@ProjectDanH Sounds good. Thank you for your reply.

[@fjnagle2nd]

Hey Dan! Always enjoy your content! Thumbs up as usual. Just wondering if you put any kind of flush in before you started. I usually put some sort of flush agent in and run it for a couple of days prior to actually flushing the cooling system. Have to say, I've never had the problem of opening the petcock and nothing coming out. That was a first. Hope your wrist is all good soon!

[@ProjectDanH]

Thanks for the views Frank! I didn't put any chemical flush in this time because I wasn't sure when I would have time to film this project. After I finished I'm glad I didn't waste the money on the chem because everything was so severely gummed up. Now that it's all clear I'll probably use the chemicals the next time I flush it

[@michaelangelos5117]

I've done this when I was in collage..

[@ProjectDanH]

Nice. Me too! Lol

[@chrisb.1301]

Not sure is anyone else asked but why the prestone and then I see like 5 or 6 gallons of zerex? But you didn’t use it!

[@ProjectDanH]

Great question Chris. I saved the empty Zerex containers from a 5.7 hemi flush so I had something to put the old Prestone coolant in

[@turukmakto751]

Thanks for this video bro

[@ProjectDanH]

anytime! 💪

[@marcbari6528]

Dan, wouldn't it have been easier to pull that upper heater hose and drill it while car was drained, then all you would have to do is slide it back till it vented?

[@ProjectDanH]

Lol. Of coarse!

[@1020donny]

Don't "BLAST" water through the heater core, be somewhat gentle. You can damage the heater core and then you will really have some real fun.

[@ProjectDanH]

Lol! Exactly!

[@adammorin814]

Just a thought for you on your 70/30 mix for the coolant to handle more extreme temperatures - yes it may handle colder temperatures a little better with a 70/30 mix but 60/40 is plenty unless you are going saab's 30 degree weather. I believe there's even a short what shows full viscosity as well as coolant ratios for extreme colds. I would never go more than 60 40 in my opinion though as water actually runs cooler than antifreeze. It gets around 0 degrees where I live sometimes a few degrees colder and I usually do about a 55-45 mix water to coolant possibly even 6040 because like I said water runs cooler than antifreeze. You just need enough antifreeze that it will not expand in your block and cause some serious problems. so go ahead and spend a dollar extra and buy Pennzoil instead of store-brand and you got the proper thermostat so you're good to go. This is how we used to have our race cars run as cool as possible as well as our trail trucks, which were used during hunting season when it gets damn cold. Just someone from the other side of the tracks brother. Best of luck in all your Mopar Ventures and check out a Volkswagen from time to time, they are kind of like the car equivalent of jeeps in my opinion. Like the 84 to 98. Holler anytime, peace brother

[@ProjectDanH]

hey Adam! thank you for your Input, I really appreciate it and your view!. I'm open for anything, maybe if I find a deal on a VW I'll scoop it up! thanks again brother!

[@legacyloco1920]

Great videos! Does your ac work? Most of these acs dont work on the jeeps.

[@ProjectDanH]

Thanks brother! Until we got the commander the only vehicle I owned with AC was my 89 Mustang 🤣🤣🤣. I've never had a Jeep with AC. LMAO

[@garyhowell738]

My AC worked when the motor was cool, but once it warmed the AC stopped. I removed a shim on my AC compressor and it works great again.

[@legacyloco1920]

I have had like 4 zjs and 1 out of 4 acs worked. But it only worked like for 3 months but them gave out lol.

[@legacyloco1920]

I'm trying to get Into another zj but the one I'm looking at the ac doesnt work. I'm trying to get one for a daily driver for work and maybe on the weekends take it out and have some fun.

[@ProjectDanH]

@@garyhowell738 yea, sometimes the clutch on the compressor wears out. Good job!

[@jason5797]

Thanks for the video but the extra hole is not necessary btw great video always watch ur channel and like!!

[@ProjectDanH]

Ok, thanks. I appreciate your views!

[@fjnagle2nd]

Here is the "Flush Kit" I've used for as long as I have been working on vehicles. www.amazon.com/Prestone-AF-KIT-Flush-Fill-Kit/dp/B000CCFY5W/ref=sr_1_26?crid=1C5DWIKA42YTT&keywords=radiator+flush&qid=1569433019&sprefix=radiator%2Caps%2C243&sr=8-26 I always spliced into a heater hose as the first time I used this system, I had a blocked heater core from putting silver seal in the cooling system to stop a leak. This system spliced into the heater hose, worked really well to flush the heater core. Hope this helps.

[@ProjectDanH]

Awesome! Thanks Frank!

[@maniacalmonster2293]

Now I got done with the entire process, at the end running the vehicle with the heater on, added coolant as necessary about 10 minutes in and my radiator just erupts like a volcano coolant everywhere. lost about half my Reservoir, who knows how much out of my radiator. Was keeping an eye on the temperature from the dash. it held a steady just a little above the middle on the cold n hot. on the temperature looked about right, read little under 200 right about what’s the thermostat is 195 ish.... why the hell did this happen? somebody please help..

[@ProjectDanH]

perhaps you have air trapped in the system. You must park on an incline engine up. don't cap it yet. fill the radiator and reservoir cold then start the jeep. when it heats up the thermostat will open letting coolant in. At this point you will need to add coolant. you can squeeze and massage the upper and lower rad hose to try and work out any bubble. Keep filling until she wont drink anymore, then cap it up and shut her down. That should do the trick.

[@maniacalmonster2293]

@@ProjectDanH Thank you for the response but the problem was just that...... The thermostat. I replaced the thermostat along with the process and the new thermostat was a newer make and model did not have the pressurised little hole in it. finally narrowed it down to it had to be that, so I just reinstalled the original thermostat that was in it before that had the hole, problem solved. Now I’m fighting and even worse problem... my shifting is ridiculously rough and late.. Might be just a tad bit low on transmission fluid but I’m about to find that out but I doubt that is the only reason and will fix it back to a smooth shifts. I have adjusted my throttle cable every which way, that does not help at all.. I hate adulting. I wanna be a Toys R Us kid!

[@clintonbeason1638]

If you live in Phoenix or hot climate areas a195 thermostat in summer can cause overheating so i run a 180 in all 4 of my zj's never a problem anymore but that's just my two cents

[@ProjectDanH]

oh wow! I'll remember that of I ever take a trip out there. Up in the north east it gets cold in the winter and we need that hot antifreeze in the heater core to thaw us out 🥶🤣

[@clintonbeason1638]

And great video...Thank you

[@ProjectDanH]

Glad you enjoyed it

[@hangmann747tinmann8]

Unbelievable you did yell out "YOUR KILLING ME SMALLS" when you broke that rusted bolt!

[@ProjectDanH]

LOL!

[@matekosaras9190]

Hey! Great vid!! Love it. I use 205F thermostat in my 95 4.0. What is your opinion ? Thx

[@ProjectDanH]

wow.. 205 is pretty hot, usually people go down 10 degrees to keep it cooler. interesting how you went up 10 degrees. any particular reason for doing so?

[@matekosaras9190]

@@ProjectDanH yeah so my heating only blows warm air when its on hi temp only. And my temp gauge never goes higher then 190-195 but i think it should be near the 210 at operating. Maybe it helps with gas mileage too. A guy in the zj group said that it worked in his jeep 🤷‍♂️ So i tought i give a try.

[@ProjectDanH]

@@matekosaras9190 gotcha! i wonder if you haved a clogged heater core. if you can flush it out, maybe you can lower that thermostat temp one day!

[@matekosaras9190]

@@ProjectDanH i replaced it a year ago. But flushed it a few weeks ago. It looks okay. My running temp with the new thermostat is fine. Soo i guess its the blend door that causes the trouble. I appreciate you have time to write back! Respect, thank you!

[@ProjectDanH]

@@matekosaras9190 anytime! On the ZJs it could be the Mode door actuator.. it's a bit tricky to get to, but it's not a Terrible fix. 💪

[@jonathanknight9316]

Why wouldn’t you just take the fan guard off to get the second bolt when changing the thermostat?

[@ProjectDanH]

Because I didn't want to remove the radiator.

[@Braddahjon1]

What was the zerex for?

[@ProjectDanH]

I used it in the Commander with the 5.7 hemi

[@maniacalmonster2293]

Wouldn't drilling the hole introduce air to the system regardless?

[@maniacalmonster2293]

Awesome!

[@ProjectDanH]

Not if only liquid goes out

[@maniacalmonster2293]

@@ProjectDanH well, I looked at mine and its not really a hole. there is like a BB be held with lil metal slats? whats that about?

[@robinvlasveld3594]

wouldnt it be wayy easier if u took the fan cover of? nive vid

[@ProjectDanH]

Nope! You'd have to take the fan off to get the cover off. Thanks for watching!

[@smitty4699]

bombay sapphire, my fav gin.

[@ProjectDanH]

Mine too! Good eye!!!

[@smitty4699]

Lol attention to detail. Nice job on the flush

[@ProjectDanH]

@@smitty4699 lol.. thanks man!

[@infinitybandofkent]

16 or 18 lb cap, mine says 18 ?

[@ProjectDanH]

the 4.0 system should be 16 lbs

[@knowledge5106_]

Finally found someone who asked the same question! I have a 4.0 98 ZJ and all I can find is 18 psi rad caps. When I search online for the 16 psi it always says it's not compatible with my ZJ. I'm not leaking coolant anywhere but it tends to show overheating then cools down. I believe this is the problem because it doesn't stay at 210, but a tick over from 210

[@infinitybandofkent]

I went with a 16 lb rad cap now 3 years later I'm going with a 180 degree thermostat instead of of 190 because I run at 210 too

[@knowledge5106_]

@@infinitybandofkent you don’t like your Jeep running at 210? I couldn’t find a regular 16 psi rad cap. Just had to pick up a Mr Gasket 16 rad cap from Oreillys that was $42.86 including tax with military discount.

[@DEInTheGarage]

Today on the project, how to make moonshine.. wait..

[@ProjectDanH]

hahahah! don't drink that methanol!

[@SuperZeadz]

❤v8 5.9 🥰

[@ProjectDanH]

Yea.. 5.9 😊

[@bethjohnson8353]

Ohhh your little wrists hurt!,,,,

[@ProjectDanH]

Not as bad as the other guy's face

[@ianatkinson8464]

😎👍

[@jaboneyoyo5843]

Lmfao 8:00 u got drenched bro..

[@ProjectDanH]

LOL totally

[@Wallstreet_trader]

How your gates water pump doing I think about get one for my 300c

[@ProjectDanH]

the new water pump in the hemi is great! it's been a year and it's been smooth sailing

[@Chrisw678]

👍🏻

[@ProjectDanH]

👊

[@eazytoribio2695]

How about drilling the hose ahead of time 😂 so you don’t have to spray your hands with hot coolant 😅

[@LordLancifer]

You need a spill-less funnel lol

[@ProjectDanH]

Haha, you're 100% correct!

[@deadspeed6679]

Buy a coolant bleeder kit

[@OldsVistaCruiser]

Surprised that you don't have the skid plate package. I had to remove the front skid plate on my '96 Orvis 4.0 to get to the lower hose and petcock so I could change my water pump.

[@ProjectDanH]

Yes, unfortunately I don't have one. If I lift this or take it off-road I'll eventually try to find one.

[@grw707]

IM WAHKIN HEEEYUH

[@ProjectDanH]

hahaha! nice accent!

[@jamesgawronski1453]

Classic editing fucking funny

[@ProjectDanH]

lol. thanks James!

[@richardtugwell6229]

It's a Ray-dee-a-tor

[@richardtugwell6229]

Not rad-eee-a-tor

[@ProjectDanH]

Lol!!! Noooo Rad as in radical 🤣🤣🤣🤣

[@ЮраЖунусбеков-ы1ж]

🤣🤣🤣🤠👍👍👍

[@ProjectDanH]

😉

[@infinitybandofkent]

Are you crazy or what ?

[@ProjectDanH]

Definitely crazy

[@infinitybandofkent]

Cool just wanted to make. I have 98 4.0. I love it

[@ProjectDanH]

@@infinitybandofkent awesome man!!! 👍