Question about 1990 Toyota Corolla
Replace the thermostat with one rated to around 190 degrees or as close to that that you can find,if that does'nt work you need a temperature senser.
Posted on Nov 13, 2009
The reason you engine temperature doesn't raise is the engine isn't closing the coolant system flow.
The thermostat is "stuck" open, never allowing the engine to heat up (you possibly also have cold air blowing when you switch to heater on your climate control)
I just had my thermostat replaced on my corolla & my fuel mileage also went back up :)
Hope that helps!
Posted on Nov 23, 2009
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Posted on Jan 02, 2017
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