Quote:
Originally Posted by XYZ
On a Toyota I once owned it had a very similar problem. It only overheated when under heat stress, such as on very hot days or climbing hills. It ran fine with no overheating in every season except summer. Rather than diagnose which sensor was bad, I wired both the A/C fan and the rad fan to come on instead of just the one rad fan, as was intended. That was a practical solution, but it didn't ultimately get to the source of the problem, which was apparently that of the fan control circuit.
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How did you wire them together, and why do you feel the fan control circuit had an issue?
I don't use a/c, but could use the fan on long hills. I'm thinking to take the a/c out and see if the extra space helps the engine keep cool.