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OriginalOwner

Kugelfischer
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Posts posted by OriginalOwner

  1. the thermostat is designed to open at it's design temperature. Doesn't matter whether heater valve is on or off because the heater isn't in the primary cooling loop. I prefer to think of the heater loop as a "side loop" not associated with the primary cooling loop.

    If you suspect the thermostat isn't opening, remove it and toss into a saucepan with water to cover and heat it up. You'll see it open. If you have a thermometer, that can be helpful.

    as for burping, if I think I'm having that problem I remove the radiator cap then set it back on without rotating it fully closed. Then I drive around awhile. If I had a burping problem, it goes away. If I didn't have a burping problem, then I still don't. Win-Win.

    as for personal history, a couple of years ago I installed a new radiator and the car still ran hot. Turns out there was some very gooey goop in the head and/or block somewhere, because suddenly it appeared in the top of the radiator where I could see it. I removed the radiator and flushed it out. Haven't had an overtemp problem since and the gauge needle moves from 1/4 to 1/2, no higher.

    That gooey goop, without any scientific basis other than a silly wild ass guess, I surmised it had collected at the coolant outlet from the head and was partially blocking coolant flow into the radiator, having collected around the temp sensor that sticks into that fitting ..... and thus also holding some backpressure resulting in reduced coolant flow which kept the temp high. Somehow/something finally dislodged the goop and it went directly downstream into the radiator. I got lucky and saw it before it "melted" and again went elsewhere. Wierd theory, but more evidence included the fact that one day the car temp was "normal," and the next day was running "hot" and never stopped running "hot" until the goop showed up.

    Cheers,

    Carl

  2. my bizarre story. Similar symptoms.

    Actual Problem: a goopy sorta/kinda slushy corrosiony goop on the positive battery terminal. This prevented cable contact to the battery terminal, electrically speaking.

    I removed the battery cable, cleaned everything, put back together. All was fine after that.

    Cheers,

    Carl

  3. that coolant system tester, I assume that's the one that replaces the radiator cap ?? So, when running, there is no 15psi radiator cap in place to relieve pressure, so pressure will climb to whatever it wants to.

    System pressure will definitely increase as the engine gets hot. First indication of problem(s) is losing lots of water. If you are holding pressure and not losing water, seems normal to me.

    Cheers,

    Carl

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