'94 Civic overheating (help!) - Follow-up

Discussion in 'Civic' started by G-Man, Apr 1, 2004.

  1. G-Man

    G-Man Guest

    Well, got an OEM Thermostat for $20, and a gallon of Honda pre-mix coolant,
    and headed south for an hour drive to my son's college.

    When I got there, the book threw me a curve, as the lower hose actually went
    to the thermostat housing, so when I had him check the hose temp, he was
    checking the wrong one.

    Opened the radiator cap, and it was wet, but no coolant in site.

    Removed the coupler going into the thermostat housing and jumpered with a
    paperclip and the fan ran (whew!). Still looking like thermostat, so
    removed the housing (didn't even have to remove the hose). Popped the new
    thermostat in and put about 1/2 gallon of coolant in the radiator. Started
    car and let idle. Temp held steady. Had him take a five minute drive, and
    when he came back, let it idle for 10+ minutes. Never got hotter than mid
    guage. Never got hot enough to kick the fan on so not sure if that switch
    has a problem, but he said the heat jumped up in a matter of minutes last

    So, new thermostat and coolant top-off stopped the over heating. What
    bothers me is there was coolant all over the ground from the night before
    when he said it got to the red line. Is this possibly just the blow off
    from over heating? We checked again and again and could see no leaks. We
    drove it into town, had dinner and then back to the house and no problems.

    I left him the other 1/2 gallon of coolant just in case. I'm keeping my
    fingers crossed :)

    Thanks for all the input from everyone.

    G-Man, Apr 1, 2004
  2. =====================

    You said...

    Make sure your boy understands that he has to keep the reservoir
    half-full. It may appear to lose coolant the first couple of times he
    drives it, as air burps out.

    Your coolant was so low the sensors weren't immersed, so they weren't
    turning the fans on. It's pretty basic 'owner's manual' stuff, now,
    finding out if there's still a leak will be important, especially if
    it's leaking out the water pump.


    'Curly Q. Links', Apr 1, 2004
  3. G-Man

    electricked Guest

    Have a rag or a piece of newspapers placed underneath the car overnight and
    see if there's still any coolant leaking. If the thermostat was really bad
    as to not let any coolant passby the pressure from the water pump could've
    forced a leak somewhere along the way.

    I don't think you'll be having any problems though.

    Good job!

    electricked, Apr 1, 2004
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