I took my Crossfire to the shop for scheduled maintenance on Friday and was in and out within an hour. Then, on Saturday, the check engine light came on so it sat most of the day. Now today, I had to drive in to work and the check engine light is gone, but now with my A/C on, my Crossfire sounds like it is equipped with a jet engine. When I turn the A/C off, it goes away. Does anyone have an idea what could be causing this? With the temp at 101 degrees at the moment, driving without the A/C really isn't an option. I'm a little worried considering at almost 42,000 miles, my 3/36,000 warranty is gone.

On a side note, I find it strange that most of my automotive problems occur within a day or two of having my car serviced. I'm probably being paranoid, but it's becoming a common occurrence.