Had a misfire on a 02 rav4 2.0L. The third cylinder was definitely misfiring and showed on scanner as #3. Okay so, replaced the COP on #3 and all the iridium spark plugs. It was still missing however the new code was multiple misfires so I changed the COP around a few times and it seems like a #2 misfire is now showing up. Switched the COP around again and still #2. My feeling is a cam sensor maybe? Hope someone had this issue and could use a little advice on what to look for next....Thanks All!