Dismiss Notice



Register Today It's free! This box will disappear once registered!

Puzzled about coolant loss

Discussion in 'Stock 1991 - 1994 Explorers' started by ldhill99, July 17, 2011.

  • Searches ExplorerForum.com
    1. ldhill99

      ldhill99 New Member

      Joined:
      January 22, 2011
      Messages:
      6
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Wellford. SC
      Year, Model & Trim Level:
      1993 Limited
      I have been having overheating problems with my 93 explorer ltd. for months. I have replaced the water pump, thermostat, heater hoses and the thermostat housing. I am still losing coolant. The vehicle runs perfect until it overheats. The other day I noticed some dripping out of the muffler. Could this be where the coolant is going? What do I do to fix it? Help
       
    2. Support EF

      Join the Elite Explorers for $20

      Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.


      to hide adverts.
    3. something9000

      something9000 Active Member

      Joined:
      June 17, 2011
      Messages:
      120
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      naples fl
      Year, Model & Trim Level:
      1994 navajo
      some dripping out of the tip of the exhaust is a normal product of burning gasoline. however is its excessive or smells like burning coolant you could have a head gasket leak. However i think its more of maybe your radiator has a small crack in it and its loosing coolant thru evaporation. Do you fill the coolant thru the res tank or directly into the radiator?
       
    4. acschilling

      acschilling Active Member

      Joined:
      July 8, 2010
      Messages:
      317
      Likes Received:
      0
      Trophy Points:
      16
      City, State:
      CO
      Year, Model & Trim Level:
      92 XLT
      I have a 92 XLT and I might have the same problem. It isn't leaking as bad as when the heater hose from the water pump was torn. My leak isn't that bad. Good radiators are easy :thumbsup:
       
    5. ldhill99

      ldhill99 New Member

      Joined:
      January 22, 2011
      Messages:
      6
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Wellford. SC
      Year, Model & Trim Level:
      1993 Limited
      Usually fill it through the radiator. Res. stays full. Radiator drains about a gallon of coolant and motor overheats
       
    6. 1994Splash

      1994Splash New Member

      Joined:
      June 9, 2010
      Messages:
      15
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      madison,al
      Year, Model & Trim Level:
      94 Splash
      How does your oil look? Is it milky? If so it could indicate that you have a blown head gasket.
       
    7. acschilling

      acschilling Active Member

      Joined:
      July 8, 2010
      Messages:
      317
      Likes Received:
      0
      Trophy Points:
      16
      City, State:
      CO
      Year, Model & Trim Level:
      92 XLT
      I think you have a hose leaking...when I was loosing that much, that's what it was...
       
    8. something9000

      something9000 Active Member

      Joined:
      June 17, 2011
      Messages:
      120
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      naples fl
      Year, Model & Trim Level:
      1994 navajo
      if its leaking that much you have to able to see it dripping/streaming/pouring from the vehicle
       
    9. acschilling

      acschilling Active Member

      Joined:
      July 8, 2010
      Messages:
      317
      Likes Received:
      0
      Trophy Points:
      16
      City, State:
      CO
      Year, Model & Trim Level:
      92 XLT
      That's what I'm sayin...a gallon! I could watch mine stream to the ground it was leaking so bad...about at least an overflow tanks worth a day...get dirty and visually identify it
       
    10. surf

      surf Active Member

      Joined:
      September 17, 2003
      Messages:
      252
      Likes Received:
      1
      Trophy Points:
      0
      City, State:
      Atlanta, GA
      Year, Model & Trim Level:
      '93 XLT
      Other potential areas to look at are the timing cover
      and lower intake manifold.
       
    11. JCat

      JCat Active Member

      Joined:
      June 22, 2002
      Messages:
      468
      Likes Received:
      3
      Trophy Points:
      18
      City, State:
      Atlanta
      Year, Model & Trim Level:
      98 Mountaineer
    12. DasBaldDog

      DasBaldDog Member

      Joined:
      December 17, 2010
      Messages:
      72
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Greensburg, PA
      Year, Model & Trim Level:
      1994 XLT 4.0
      If it's a gallon, check your oil. If there is NO coolant in your oil (losing a gallon at a time, remember) then I'd say LIM gasket.
       
    13. Nedwreck

      Nedwreck Active Member

      Joined:
      September 2, 2008
      Messages:
      409
      Likes Received:
      0
      Trophy Points:
      16
      City, State:
      Kentucky, Y'all!
      Year, Model & Trim Level:
      '93 xlt, '92 4x4
      Wait.

      This is a major clue right here. (in my opinion)

      One of my Explorers has a gradual coolant loss.

      The other one used to lose a lot of coolant before it "gave up the ghost".

      and the old one (it's a parts truck now) had a coolant problem too (heater core).

      All of my explorers would suck the coolant reservoir dry before the Radiator lost it's level. (I just keep my res. topped off, and life is good)

      Every time they get hot they push coolant out, when they cool off they draw it back it.

      We don't know how many heating cooling cycles it takes to lose a gallon, if it's like a gallon lost every time you drive it, etc..

      I would check the radiator cap, the small line to the Res. tank, and maybe clean out the tank if needed.
       
    14. geosnooker2000

      geosnooker2000 Active Member

      Joined:
      March 29, 2007
      Messages:
      270
      Likes Received:
      4
      Trophy Points:
      18
      City, State:
      Somerville TN
      Year, Model & Trim Level:
      '10 Eddie Bauer V8 4x4
      Get it block tested. If it has gas fumes in the coolant, you have a cracked head/blown head gasket/cracked block. If you drive it long enough, does it push so much coolant into the overflow tank that it pops the top off of it? That's what mine did. = Cracked/warped heads.
       
    15. ldhill99

      ldhill99 New Member

      Joined:
      January 22, 2011
      Messages:
      6
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Wellford. SC
      Year, Model & Trim Level:
      1993 Limited
      There is no coolant in the oil or oil in the coolant There are no gas fumes in the coolant. I don't want to replace what doesnt need to be replaced. I don't have the money to do a lot of guesswork :(
       
    16. something9000

      something9000 Active Member

      Joined:
      June 17, 2011
      Messages:
      120
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      naples fl
      Year, Model & Trim Level:
      1994 navajo
      so you see no visible signs of a leak at all?
       
    17. DR_APLET

      DR_APLET Member

      Joined:
      February 6, 2010
      Messages:
      97
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Nor Cal Mendo
      Year, Model & Trim Level:
      91
      well we all need to face it, the 4.0 is notorious for blowing head gaskets and heads. i just bought a donor and the guy gave me every record on the car since new... he had symptoms since the truck was a year old. i replaced 2 on one X in a year and a half. had one and ran it 3 years with a blow head gasket till it died. the valves were made too close together the heat of the exhaust and cool of the intake make that the prime place blow out.

      people please dont fix radiators, heater cores, water pumps, thermostats or any thing else with out checking the heads.

      you may have symptoms like above said items but dont bother with them if you wont spend the few dollars on diagnosing the heads first your wasting your time. that IS your problem, as a man with much 4.0 experience with blown head gaskets.
       
    18. tjsxplodr

      tjsxplodr Well-Known Member

      Joined:
      July 26, 2009
      Messages:
      1,162
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Idaho
      Year, Model & Trim Level:
      1991 Ford Explorer XLT
      I agree with the above....check your compression and check the cooling system. Sounds like a head gasket to me.

      BUT, i had a small leak, and mine turned out to be a bad radiator cap, so start small, then work your way up to the big stuff.
       
    19. Nedwreck

      Nedwreck Active Member

      Joined:
      September 2, 2008
      Messages:
      409
      Likes Received:
      0
      Trophy Points:
      16
      City, State:
      Kentucky, Y'all!
      Year, Model & Trim Level:
      '93 xlt, '92 4x4
      I agree! (!)

      I used to overlook the coolant tank and cap, until I realized how vital those sub-systems are.

      The mention that the coolant tank level never changes, but the radiator looses coolant is a big flag in my opinion.

      It's at least worth a good look and check - easy and free too.

      Hopefully that's all it is. One can hope, yes? :)
       
    20. Backwoods "X"

      Backwoods "X" Active Member

      Joined:
      June 20, 2011
      Messages:
      221
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Mt. Sterling, Ky
      Year, Model & Trim Level:
      94 XLT
      Seems like the 1st Gens. have history of doing the"missing coolant" trick...our 94 is wanting to STAY at a little over 1/2 full in the radiator, but everything else is seemingly just fine...
       
    21. DR_APLET

      DR_APLET Member

      Joined:
      February 6, 2010
      Messages:
      97
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Nor Cal Mendo
      Year, Model & Trim Level:
      91
      heres my soap box again,
      here is what happens... if a particular component fails (thrumostat, radiator, overflow...ect) the motor overheats this in turn weakens and already weakened head gasket it fails, causing other major issues like misfire, leaking heater core, leaky hose, radiator, overflow, thrumostat water pump... this list goes on. people usually address the simple stuff and never ask why this happened. these components DO NOT fail regularly with out other cause. i know despite its reputation thermostats are not usually the problem.
      Why...after a head blows pressure builds destroying the extraneous parts like heater core. this inturn overheats the motor again exacerbating the problem. my experience with this motor is that you will not loose a gallon of coolant of water to a cap or overflow, once you loose a pint or so the and drop the level below the reach of the cap. its not that. same with the overflow. if you cant see the leak (a gallon would be obvious) then think interior could be heater core but you would probably smell and see that(wet carpet puddles under the passenger front tire) its probably interior. Probably the #2 or 3 cylinder. the water does not usually make it to the oil because the blow occurs from the water jacket to the exhaust valve or between the valves, if you see any steam (smoke vapor) during the summer your gasket is the cause, a few minuets in the winter, in really cold places you will have other issues and could be hard to tell from the exhaust. once you fill the radiator to the neck of the opening with the car running at temperature look for bubbles or smell the water for exhaust. these are indicators not all head gaskets have these symptoms. Dripping from the exhaust is a pretty good indicator.
      i like Jcat's answer, but i have see them test good on compression but still have a blown HG. a leakdown test might be more comprehensive.

      my brother once against my advice took his x to a "mechanic" for a misfire. they replaced the spark plugs... after 2 weeks the mis came back then another "mechanic" who replaced the radiator, heater core, thermostat hoses and plugs, after $2500 he let me help him with the gasket found a cracked head on #2 junkyard head and back together has been running well for a few years now.
       
      Last edited: July 23, 2011
    22. Roadrunner777

      Roadrunner777 Well-Known Member

      Joined:
      February 5, 2011
      Messages:
      1,761
      Likes Received:
      80
      Trophy Points:
      68
      City, State:
      Bemidji, MN
      Year, Model & Trim Level:
      94 4x4 Sport 88k
      Dr, I love words of experience, but I don't understand a lot of your second paragraph. I would be very appreciative if you would read through it and see if you could clarify a little bit? If you have time? Thanks!
       
    23. DR_APLET

      DR_APLET Member

      Joined:
      February 6, 2010
      Messages:
      97
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Nor Cal Mendo
      Year, Model & Trim Level:
      91
      sure thats late night for me my eyes were closing...
      if these motors overheat a little from a small problem it becomes a big problem.
      lets do a couple scenarios;
      #1. blown HG (head gasket) lets cylinder compression into the cooling system. builds pressure and blows out a heater core seam spilling coolant.

      #2 blown HG leaks coolant into cylinder and is combusted and expelled out the exhaust as steam.

      #3 blown HG leaks compression into the cooling system, pressure forces coolant out the overflow, overflow is always full but radiator is empty.

      now a failed component like a water pump could lead to a blown HG but usually the other way. a thermostat can be slammed closed by the pressure that is generated causing issues but the source is the HG. these components are made to withstand much more abuse they they naturally receive without other forces compromising them.

      I hope this is the paragraph that you mentioned if not just quote my ramblings ill try to explain

      i error-ed in my statement about valves, it blows near the exhaust valve not to the exhaust valve, and cracks between the valves.
       
    24. joseph007

      joseph007 New Member

      Joined:
      May 25, 2008
      Messages:
      3
      Likes Received:
      0
      Trophy Points:
      0
      City, State:
      Burbank Ca
      Year, Model & Trim Level:
      97 xlt
      Check the thermostat housing, the upper and lower. I just replaced mine on a 1997 Explorer, 4.0L sohc. It is made of plastic and are known to fail.
       

    Share This Page







    We Support Our Troops!