I have an 03 Ram 1500 that has had a strange problem for about 3 years now. When the truck sits outside in the sun the a/c compressor will not engageuntil I get back in it until I drive it about 10-15 minutes. If I park in the shade it will work everytime. I have tryed a new solarsensor (the one behind the grille) with no change. Just wondering if anyone else has ever seen this before. Thanks in advance.