I have a 95 Contour with a 2.5L. It normally runs with the temp in the O to R area. When I run the A/C, particularly with Max A/C, the temp goes up to the A to L range. The A/C does not cool very well when the temp gage is up there (it keeps cycling). The water pump was changed by a dealer a few months ago because it was leaking. I do hear the fan running when the engine is hot. What do you think I should check?