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Showing results for tags 'Cooling'.
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Hello everyone! Long time no see. Old members might remember me. I always check the engine temperature through the dashboard during long highway trips. It's always been 176-181⁰F. Suddenly, it surprised me with 165⁰. I have not done anything to the engine, cooling, etc. I opened the hood and the radiator upper hose was soft. I could squeeze it easily. I opened the coolant cap with a little hiss if any (with engine idling). I'm not losing coolant. I suspected a stuck open thermostat and covered almost entire radiator front surface with a piece of cardboard. That brought the temp. to 179⁰. ASSUMING that the original stat had failed, I have replaced it with another 180⁰ one. Guess what? The same 165⁰! The strange thing is that the same piece of cardboard now did almost nothing! Now, the temp. would not go up more than a couple of degrees. on a long highway drive I realized that I did not even check the original stat during the replacement. Did check it today and it's perfectly closed. This is an LT1 engine with fancy cooling system. Again, I am not loosing coolant. Please someone enlighten me because I am at a loss.
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Have a 97 Deville, had been leaking coolant slowly, after engine had warmed up it was dripping by passenger front tire ( down the boot area), also associated with? AC would only blow hot air. Took it in, was told that I needed a new thermostat and a backflush told them to do it if it would fix problem. Now over a 20 mile trip had to pull over 3 times as engine was too hot to drive, had to add coolant as was low. Is it possible that they put a bad thermostat in or should I be worrying more that either they screwed something up when they worked on it or a new problem has arisen? I took it back, they said the fan was not coming on, and they replaced 3 relays. Also stated they ran power to the fan and it works. Claims it may have to do with the ECU and they aren't qualified to check any further than they have. Any suggestions? Thanks
