Engine temperature variation

[lafferty1234]

I have a 93 Camry I4 with 142K miles. When I drive it I notice that the temperature seems to vary alot. After the car warms up, the gage sits in the middle. Then it rises to about 3/4. Then back to middle. It repeats this process whether I am driving around town, or on the highway. Is this normal?

[Dave's]

No, might check the fans first. Not sure what's going on however. Maybe someone else will have an idea.

[uibalnme]

Flushing the cooling system, and changing the thermostat may help. It almost seems like the t-stat isn't opperating properly. In any event, changing the coolant and t-stat would be a cheap fix, and a good idea anyway.

[ModifierMR]

make sure your fluids are good, and your resivour is full. If not you may have air in the system, or a bad thermostat.

[dc_98_cam]

Originally Posted by Dave's

No, might check the fans first. Not sure what's going on however. Maybe someone else will have an idea.

There is a temperature sensor fan switch ... located on lower pass. side of radiator ... might be intermittent failure.

[dadalior]

I have the same problem with my 95 I4. Did you fix this issue? I changed t-stat, problem remains

Originally Posted by lafferty1234

I have a 93 Camry I4 with 142K miles. When I drive it I notice that the temperature seems to vary alot. After the car warms up, the gage sits in the middle. Then it rises to about 3/4. Then back to middle. It repeats this process whether I am driving around town, or on the highway. Is this normal?

[dadalior]

Is problem from water pump which causes bad coolant circulation?

Originally Posted by dadalior

I have the same problem with my 95 I4. Did you fix this issue? I changed t-stat, problem remains

[lafferty1234]

Yes I solved the problem. I put in a toyota themostat. It is worth the $ to get one from a Toyota dealership. It now comes up to temp quickly and stays right there.

[dadalior]

Thank you very much~~~ My problem is exactly the same as yours. I get the solution! How much did you spend for the TOYOTA thermostat?

Originally Posted by lafferty1234

Yes I solved the problem. I put in a toyota themostat. It is worth the $ to get one from a Toyota dealership. It now comes up to temp quickly and stays right there.

[eyeball96]

I had a simular problem, a few yrs back on a 96 5sfe, but it was the infamous hair line crack at the top of the radiator...might give that a look too, never replaced the thermostat.

[dadalior]

Thank you! How did you find out this crack?

Originally Posted by eyeball96

I had a simular problem, a few yrs back on a 96 5sfe, but it was the infamous hair line crack at the top of the radiator...might give that a look too, never replaced the thermostat.

[eyeball96]

Its usually at the top front of the radiatior...its a hair line crack, look for a greenish stain, with seepage.