Recently, I had the 100k mile tuneup on my 2000 OBW, including new sparkplugs, etc. Prior to the tuneup, my RoadTrip wireless FM iPod player worked well. Now, there is a high-pitched background tone that makes listening to the iPod through the RoadTrip unbearable.
Would anything the mechanic did during the tuneup cause the high-pitched tone? Any solutions?