Need some advice. Left the house at noon today and got on the freeway, the ac wasn't blowing cold, less than cool. So I lowered the windows and continued. Got off about 20 miles later and tried the AC again, it was bolwing a little bit cool, not enough to cool me down and I noticed temp rising up to about 3/4. Turned off the AC and the temp started to go down. All the time I could hear as if the compresor clutch was swithing on/off. Went did my thing and came back a 1hr later and tried the AC again and it started working fine! I'm still concerned why all that happened. :disappoin Any Ideas? Thanks in advance...