Very common problem, if you are on any type of hill the sensor (which tends to be a bit overreactive) will read the coolant as low. Overfilling the coolant tank usually solves this. I can't remember how much more to overfill is recomended but doing a search on the general or problems forums should produce that.


96 Contour GL
2.5 ATX
02 Mazda Protege LX
2.0 MTX