Have changed thermostat car is
still running hot sometimes it
fluctuates and goes up and
down and I don't how to tell the
temperature of the engine 2000
Could it be the coolant reservoir
How do I get an answer
How do I find the answer to my question
If the thermostat is easy to get to remove and put hose back on then run vehicle to see if it still runs hot. If it still overheats the radiator or or cooling ports in engine are clogged needs to be flushed and is the fan coming on ? Also may want to clean radiator coil fins with a garden hose a nozzle if clogged with dirt and bugs will restrict air flow across the coil.
When you put in new thermostat did you bleed the air from the system ?
If vehicle does not overheat with thermostat removed you may have installed the t- stat wrong or you just got hold of a bad new thermostat.
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