over heating problem

asick6asick6 Member Posts: 4
edited December 2018 in Dodge
my 98 dodge dakota rt is over heating after driving it for like 35 to 40 mins ive noticed that it starts to leak the coolant out of the resorvoir tank and what im seing is that the coolant doesnt return back to the radiator so radiator starts to run low on water and engine starts to overheat does any one no whh or had this kind of problem b4?


  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Overheating can be caused by a wide variety of issues and sometimes isn't easy to solve. Since you seem to have a "slow overheat" rather than a rapid one, this sounds like a coolant circulation problem and not an air circulation problem.

    So you might check for a stuck or partially stuck thermostat, or a clogged radiator (especially on a 20 year old truck!). You can also buy a little kit to test for combustion gases in the coolant, which would indicate a head gasket leak. Most head gasket issues are rapid overheats, but as I said, overheating can be a complex issue and there are cases of a slow-overheat with a bad head gasket, and not all blown head gaskets will allow water into the oil--so just checking the dipstick for a milky substance (do this anyway) doesn't mean you don't have a bad head gasket.

    Aside from the dipstick check and combustion gas test in the coolant, you can pressurize the cooling system with a pump and then pull out the spark plugs, with the system still under pressure. If you see coolant on the tips of any of the plugs, then that's a sign of a bad gasket as well.

    You can also have soft radiator hoses that collapse at higher speeds, cutting off coolant circulation. That's another thing to check.
  • asick6asick6 Member Posts: 4
    i checked the dipstick theres no sign of coolant going into the oil everything from the cooling system is new i removed the thermostat so water flows clear but it still keeps on throwing out the coolant from the resorvoir tank until the radiator stays with out coolant 
  • Mr_ShiftrightMr_Shiftright Member Posts: 64,481
    Possibly an air block in the cooling system. Did you refill it carefully to eliminate any air, or "burp" the system?

    Is the radiator new as well?
  • asick6asick6 Member Posts: 4
    yes i have burp it ive done it several times already but havent being able to fix that problem only thing i can think of its a head gasket now 
  • asick6asick6 Member Posts: 4
    i have replace everything that has to do with the cooling system now with new parts 
  • zingotimzingotim Member Posts: 6
    did you get your dakota fixed? i having the exact same problem with my 2005 dodge dakota. please let me know if found the the problem
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