I had the same problem with my radio, very annoying. I didn't try to take it apart and clean it, but what I did do is buy a good used radio off eBay for about $60. It was even an upgrade to a Premium Sound and the difference was very noticeable. If you have good luck with eBay, I would try there. Many different 850 radios will fit your car even if they are from a different year. Removal of the radio is supprisingly easy: take a small flat-head screwdriver, and push it the two flushmounted tabs lightly until they click and spring out on their ow, and the grab them lightly and pull them until they stop, and then remove the radio. I hope this makes sense, good luck.