i got a black contour, 96, V-6 engine.. when parked in a lot it gets hot.. the a/c in my car works correctly but the heat you have parking in the sun takes forever to cool the car.... you might not have a problem with the a/c at all..
its the car, black is the problem.... absorbs the heat..
that is why in the south the black an white police cars had a white top years ago to control some of the heat..... try parking under a tree.. when i have my contour in the garage
and use it there is no problem.. it just take some time to cool the car down when parked in the sun... where i live the temp. was like 82 degrees, but the heat index was over
100 degrees....very high humidity.........