Mar 29, 2006 update to the Honda Civic Si project car

Maintaining homeostasis

Lately we have noticed something odd regarding our Civic: The temperature needle has been slow to rise in the morning and tends to fall during highway trips. We figured that the thermostat was sticking open, causing the car to run on the cool side. Well, tonight we installed a new Honda thermostat, and so far the temperature gauge seems to be operating normally. As we’re going to be putting some highway miles on the car this weekend, we figured we should take care of any minor problems before they become major ones out on the interstate. (Looking back, yeah, we could have diagnosed the problem with an infared pyrometer, but it was more fun getting our hands dirty.)

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