hi all right .. today i was driving my vr (as you do) and it developed a misfire . it started fine i wasn't killing it , it just started when moving along . i got some one to put it on a reader and it came back as temp sensor so changed that and still the same ... it starts fine idol is normal MPG is down to 20.3 ? i drove it home (about 12 miles) and ran OK just sounded terrible ..... Any ideas ?