Engine temp problem
My experience with the chevy coolant system, cambelt/timing belt will probably not affect the temp. Never-mind what pseudo half wit wanna be mechanics tell you, trust me, they just want your money for work that doesn't need to be done. Start with getting a repair manual for your car, Clymer, et cetera, can be purchased in any Pep Boys, Advance Auto. First check for leaks, especially around timing belt area, which will mean faulty water pump, then and only then do you replace timing belt and water pump. If no noticeable leaking, check level. If that's fine, make sure anti freeze is appropriate mixture strength, lastly replace thermostat. Auto repair manual will tell you exactly what tools are required and level of difficulty in replacing thermostat. Fairly easy, but I have been doing it since birth. One more thing, if your car is within operational temperature standards, don't sweat it, it's an old car and they get weird with age!!!! Hope this helps! If problem persists after this, contact me personally!! Thank you!