Toyota Repair: High temperature..., differential fluid, temperature gauge

Question
"Hey, I know this is not about a Toyota, but I thought it might be similar
enough to ask.  I have a 91 Acura Integra.  Lately the temperature gauge has
been getting pretty high at times.  And then most of the time I'm driving around
its alright.  kind of like it just flares up once in a while.  Could this be one
or more of the temperature sensors going out?  Maybe a problem with the fan?
The radiator was replaced recently, so it's okay.  It seems that my heater has
become way less effective but I'm not sure if it has anything at all to do with
the cooling of the engine.  Based on these clues, what do you think I should
check out first?

Todd"


Answer
Eh. Always start by flushing the coolant & changing the thermostat & any pressure caps on the system.
Cooling system maintenance is normally neglectid. Like transmission fluid & differential fluid.

Water pump could be an issue also. Check the coolant pressure, or get someone to check it for you.