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

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  • Опубліковано 6 лют 2025
  • Here is the long awaited ZJ coolant Flush and thermostat change video! Sorry it took so long to upload, the wrist thing is still a pretty big setback.. wish me luck on the MRI!
    #Jeep #ZJ #Grandcherokee #Coolantflush #thermostat
    Motorad Thermostat 5200-195
    Prestone Concentrate Coolant (1Gal)
    amzn.to/31BeTgX
    Multi use Fluid Pump
    amzn.to/2LEFMLt
    Automotive Funnel
    amzn.to/2LG2Yso
    No Copyright Music:
    LAKEY INSPIRED - Watching The Clouds
    / lakeyinspired
    INOSSI - Calling
    / calling
    Movie Clips:
    Mrs Doubtfire - Cooking
    Three Amigos - Canteen
    Christmas Story - Skunked Again
    The Sandlot - Initiate retrieval suction
    Hey, what’s up guys? I hope you enjoyed another project. Please remember that this video product is meant for entertainment purposes only. Also please remember I am not a professional and I have no professional training so don’t try this at home. If you decide to modify or fixing your own vehicle please keep it legal, roadworthy, and most importantly SAFE. Thanks for watching and I’ll see you on the next project!
    Sound Clips:
    Ludacris - Ho

КОМЕНТАРІ • 222

  • @garyhowell738
    @garyhowell738 5 років тому +6

    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
      @ProjectDanH  5 років тому +4

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

  • @digitaldreamer5481
    @digitaldreamer5481 4 роки тому +7

    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
      @ProjectDanH  4 роки тому +1

      good luck with your fix! thank you for watching 💪

    • @digitaldreamer5481
      @digitaldreamer5481 4 роки тому +1

      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!

  • @ryankersell2505
    @ryankersell2505 Місяць тому +1

    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
      @ProjectDanH  Місяць тому +1

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

  • @DEInTheGarage
    @DEInTheGarage 5 років тому +4

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

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

  • @DEInTheGarage
    @DEInTheGarage 5 років тому +2

    WHAT?! That heater core trick is legit!

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

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

  • @robertbrodarick9607
    @robertbrodarick9607 5 років тому +4

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +2

      Thanks Robert! I always appreciate your view!

  • @airsoftmasterpistol1
    @airsoftmasterpistol1 5 років тому +11

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +3

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

  • @drgil65
    @drgil65 5 років тому +3

    Kiddy pool as a giant drain pan, awesome Dan

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      Lol. Thanks man! Gotta catch that garbage 😂

  • @JoeVizethum
    @JoeVizethum 3 роки тому +1

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

  • @danhambrick6331
    @danhambrick6331 5 років тому +2

    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
      @ProjectDanH  5 років тому +2

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

  • @jorgeenriquemassipenriquez5351
    @jorgeenriquemassipenriquez5351 2 роки тому +1

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

    • @ProjectDanH
      @ProjectDanH  2 роки тому +1

      Thank you so much for watching brother!

  • @roialblu
    @roialblu 5 років тому +2

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      Much appreciated, Thanks alot brother!

  • @CoreyMills-l5t
    @CoreyMills-l5t 2 місяці тому +1

    Good job bravo 💯

  • @PSNxMigls
    @PSNxMigls 3 роки тому +1

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

    • @ProjectDanH
      @ProjectDanH  3 роки тому +2

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

  • @erikstrieter4233
    @erikstrieter4233 5 років тому +1

    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
      @ProjectDanH  5 років тому +2

      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
    @michaelb2226 5 років тому +2

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +3

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

    • @michaelb2226
      @michaelb2226 5 років тому +2

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

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

    • @michaelb2226
      @michaelb2226 5 років тому +2

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +3

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

  • @tylermartelle7041
    @tylermartelle7041 Рік тому +1

    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

  • @TheValthar
    @TheValthar Рік тому +1

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

  • @robertdurant7176
    @robertdurant7176 4 роки тому +1

    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
      @ProjectDanH  4 роки тому +1

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

  • @Whiteandsonsgarage
    @Whiteandsonsgarage 5 років тому +2

    Awesome video mate, so important to keep your Jeep cold

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      Absolutely! Thank you brother!

    • @rayoliver6807
      @rayoliver6807 4 роки тому

      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

  • @bart055
    @bart055 3 роки тому +1

    Great video Dan!

  • @Mainsail333
    @Mainsail333 4 роки тому +1

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

  • @30AndHatingIt
    @30AndHatingIt Рік тому +1

    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
    @DEInTheGarage 5 років тому +3

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

  • @nathanr.6542
    @nathanr.6542 5 років тому +3

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      You are very welcome! Good luck with your flush!

  • @deHakster
    @deHakster 3 роки тому +1

    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
      @ProjectDanH  3 роки тому +1

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

  • @314jeepsnmopars3
    @314jeepsnmopars3 9 місяців тому

    Referencing this tonight for my thermostat 😅

  • @mikeespo7728
    @mikeespo7728 4 роки тому +2

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

    • @ProjectDanH
      @ProjectDanH  4 роки тому +1

      lol! temptation always lingers 🤣

  • @lorenaalvarez319
    @lorenaalvarez319 Рік тому

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

  • @edman1015
    @edman1015 4 роки тому +2

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

    • @ProjectDanH
      @ProjectDanH  4 роки тому +2

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

  • @GoatOffroad
    @GoatOffroad 5 років тому +1

    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
      @ProjectDanH  5 років тому +2

      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
      @phatbuddha1 5 років тому +2

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

    • @GoatOffroad
      @GoatOffroad 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      hahaha! I used to be a goalie

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      haha! watch out for that methanol 😎

  • @YurrrPy
    @YurrrPy 3 місяці тому

    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
      @jeremiah1797 2 місяці тому

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

    • @YurrrPy
      @YurrrPy Місяць тому

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

  • @mgiangola
    @mgiangola 5 років тому +2

    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
      @ProjectDanH  5 років тому +1

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

    • @garyhowell738
      @garyhowell738 5 років тому +1

      Don't exceed the 1.21 gigawatts, trust me

  • @reigelsjourney2016
    @reigelsjourney2016 2 роки тому +1

    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
      @ProjectDanH  2 роки тому +1

      Have you replaced your CPS?
      ua-cam.com/video/2S_sNjcMPks/v-deo.html

  • @rayoliver6807
    @rayoliver6807 4 роки тому +1

    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
      @ProjectDanH  4 роки тому +1

      excellent tip!

    • @rayoliver6807
      @rayoliver6807 4 роки тому

      @@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
      @ProjectDanH  4 роки тому

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

  • @ralphcampisi9696
    @ralphcampisi9696 3 роки тому +2

    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
      @ProjectDanH  3 роки тому +1

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

  • @TheBeardedJeeper
    @TheBeardedJeeper 5 років тому +2

    Great video brother take care of that wrist

  • @ghostcontactparanormal
    @ghostcontactparanormal 5 місяців тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 місяців тому +2

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

    • @ghostcontactparanormal
      @ghostcontactparanormal 5 місяців тому

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

  • @ashleyperezperez8377
    @ashleyperezperez8377 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +2

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

  • @1stzjtruck706
    @1stzjtruck706 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

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

  • @JoeVizethum
    @JoeVizethum 3 роки тому +1

    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
      @ProjectDanH  3 роки тому +1

      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
      @JoeVizethum 3 роки тому

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

  • @maniacalmonster2293
    @maniacalmonster2293 3 роки тому +1

    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
      @ProjectDanH  3 роки тому +1

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

  • @fjnagle2nd
    @fjnagle2nd 5 років тому +1

    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
      @ProjectDanH  5 років тому +3

      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

  • @legacyloco1920
    @legacyloco1920 5 років тому +2

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      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
      @garyhowell738 5 років тому +2

      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
      @legacyloco1920 5 років тому +1

      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
      @legacyloco1920 5 років тому +1

      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
      @ProjectDanH  5 років тому +1

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

  • @airsoftmasterpistol1
    @airsoftmasterpistol1 5 років тому +1

    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
      @ProjectDanH  5 років тому +2

      Sure, I hate those valves! so brittle! lol

    • @airsoftmasterpistol1
      @airsoftmasterpistol1 5 років тому +2

      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
      @ProjectDanH  5 років тому +1

      @@airsoftmasterpistol1 yep! Brittle AF lol

    • @ryanellis5902
      @ryanellis5902 2 роки тому

      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.

  • @turukmakto751
    @turukmakto751 4 роки тому +1

    Thanks for this video bro

  • @michaelangelos5117
    @michaelangelos5117 Рік тому +1

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

  • @Chrisw678
    @Chrisw678 5 років тому +1

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

    • @Chrisw678
      @Chrisw678 5 років тому +1

      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
      @ProjectDanH  5 років тому +2

      @@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
      @Chrisw678 5 років тому +1

      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
      @ProjectDanH  5 років тому +2

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

  • @legacyloco1920
    @legacyloco1920 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +3

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

  • @marcbari6528
    @marcbari6528 2 роки тому

    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?

  • @plsniper
    @plsniper 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +2

      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
      @plsniper 5 років тому

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

  • @richardbatchelor3024
    @richardbatchelor3024 5 років тому +1

    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
      @ProjectDanH  5 років тому +1

      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
      @rayoliver7244 5 років тому

      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!

  • @1020donny
    @1020donny 4 місяці тому +1

    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.

  • @maniacalmonster2293
    @maniacalmonster2293 3 роки тому +1

    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
      @ProjectDanH  3 роки тому +1

      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
      @maniacalmonster2293 3 роки тому

      @@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
    @clintonbeason1638 4 роки тому

    And great video...Thank you

  • @wyattcanavit7953
    @wyattcanavit7953 5 років тому +2

    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
      @ProjectDanH  5 років тому +1

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

  • @jason5797
    @jason5797 3 роки тому +1

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

    • @ProjectDanH
      @ProjectDanH  3 роки тому +1

      Ok, thanks. I appreciate your views!

  • @chrisb.1301
    @chrisb.1301 4 роки тому +1

    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
      @ProjectDanH  4 роки тому +2

      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

  • @matekosaras9190
    @matekosaras9190 4 роки тому +1

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

    • @ProjectDanH
      @ProjectDanH  4 роки тому +1

      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
      @matekosaras9190 4 роки тому

      @@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
      @ProjectDanH  4 роки тому

      @@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
      @matekosaras9190 4 роки тому +2

      @@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
      @ProjectDanH  4 роки тому

      @@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. 💪

  • @clintonbeason1638
    @clintonbeason1638 4 роки тому

    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
      @ProjectDanH  4 роки тому

      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 🥶🤣

  • @adammorin814
    @adammorin814 4 роки тому

    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
      @ProjectDanH  4 роки тому

      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!

  • @jonathanknight9316
    @jonathanknight9316 4 роки тому

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

    • @ProjectDanH
      @ProjectDanH  4 роки тому

      Because I didn't want to remove the radiator.

  • @DEInTheGarage
    @DEInTheGarage 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      hahahah! don't drink that methanol!

  • @maniacalmonster2293
    @maniacalmonster2293 3 роки тому

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

    • @maniacalmonster2293
      @maniacalmonster2293 3 роки тому +1

      Awesome!

    • @ProjectDanH
      @ProjectDanH  3 роки тому +1

      Not if only liquid goes out

    • @maniacalmonster2293
      @maniacalmonster2293 3 роки тому

      @@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?

  • @hangmann747tinmann8
    @hangmann747tinmann8 2 роки тому +1

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

  • @Braddahjon1
    @Braddahjon1 5 років тому +1

    What was the zerex for?

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      I used it in the Commander with the 5.7 hemi

  • @robinvlasveld3594
    @robinvlasveld3594 4 роки тому +1

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

    • @ProjectDanH
      @ProjectDanH  4 роки тому +1

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

  • @infinitybandofkent
    @infinitybandofkent 4 роки тому +1

    16 or 18 lb cap, mine says 18 ?

    • @ProjectDanH
      @ProjectDanH  4 роки тому +1

      the 4.0 system should be 16 lbs

    • @knowledge5106_
      @knowledge5106_ Рік тому +1

      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
      @infinitybandofkent Рік тому

      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_
      @knowledge5106_ Рік тому

      @@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.

  • @jaboneyoyo5843
    @jaboneyoyo5843 3 роки тому +1

    Lmfao 8:00 u got drenched bro..

  • @fjnagle2nd
    @fjnagle2nd 5 років тому +1

    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.

  • @bethjohnson8353
    @bethjohnson8353 4 роки тому +1

    Ohhh your little wrists hurt!,,,,

    • @ProjectDanH
      @ProjectDanH  4 роки тому +1

      Not as bad as the other guy's face

  • @smitty4699
    @smitty4699 5 років тому +1

    bombay sapphire, my fav gin.

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      Mine too! Good eye!!!

    • @smitty4699
      @smitty4699 5 років тому +1

      Lol attention to detail. Nice job on the flush

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      @@smitty4699 lol.. thanks man!

  • @SuperZeadz
    @SuperZeadz 5 років тому +1

    ❤v8 5.9 🥰

  • @eazytoribio2695
    @eazytoribio2695 8 місяців тому

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

  • @ianatkinson8464
    @ianatkinson8464 6 місяців тому

    😎👍

  • @Chrisw678
    @Chrisw678 5 років тому +1

    👍🏻

  • @Wallstreet_trader
    @Wallstreet_trader 4 роки тому

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

    • @ProjectDanH
      @ProjectDanH  4 роки тому

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

  • @LordLancifer
    @LordLancifer 5 років тому +1

    You need a spill-less funnel lol

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      Haha, you're 100% correct!

  • @OldsVistaCruiser
    @OldsVistaCruiser 5 років тому

    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
      @ProjectDanH  5 років тому +2

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

  • @deadspeed6679
    @deadspeed6679 Рік тому

    Buy a coolant bleeder kit

  • @richardtugwell6229
    @richardtugwell6229 Рік тому

    It's a Ray-dee-a-tor

  • @grw707
    @grw707 4 роки тому

    IM WAHKIN HEEEYUH

  • @jamesgawronski1453
    @jamesgawronski1453 3 роки тому

    Classic editing fucking funny

  • @infinitybandofkent
    @infinitybandofkent 5 років тому +1

    Are you crazy or what ?

    • @ProjectDanH
      @ProjectDanH  5 років тому +2

      Definitely crazy

    • @infinitybandofkent
      @infinitybandofkent 5 років тому +1

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

    • @ProjectDanH
      @ProjectDanH  5 років тому +1

      @@infinitybandofkent awesome man!!! 👍

  • @ЮраЖунусбеков-ы1ж
    @ЮраЖунусбеков-ы1ж 2 роки тому

    🤣🤣🤣🤠👍👍👍