Today I've notice that my coolant temperature gauge goes up to about 110 degrees and stops. I've drained the radiator a little bit, to see if the gauge would go higher, it did. So far I replaced the thermostat twice today, just in case I bought a faulty thermostat. What could be the problem thats stopping my coolant temperature from going higher than 110 degrees?
If you have a 180 degree or hotter thermostat in it my bet would be that it is stuck open. If the thermostat was working it would heat up.
Have you replaced the sender or tested your setup in a pot of boiling water (212) to verify it is accurate? Even with a stuck thermostat there is not way your engine would stay cool enough enough to keep your coolant at 110 ...
I hooked up a second gauge to test the temperature, and it gave me the same reading. I also notice that there mite be a small leak somewhere, because I let the engine warm up again to do the test, and the top hose was not hard; but it was hot to the touch. So my question now is cold a leak keep the engine from reaching operating temperature?
If it is leaking, it would run hotter due to having less coolant. I agree withe everybody else, either t-stat is stuck open or not closing.
when you "let it warm up" is it sitting still or are you driving it? and how cold is it up there right now?
I'm lost now, because this is a total of 3 thermostats...they can't all be bad. There has got to be another problem somewhere.
Yes.....I imagine it is pretty cold in PA this time of year. That could be a factor. Where on the motor are you putting the sensor?
you might try starting it with the cap off and letting it warm up. Use another temp guage or thermometer, maybe a candy type as i think they go up higher. Take the temperature right in the cap hole. There's no way that it is staying at 110 even with a small leak.
