I’ve been having issues with my 2000 Toyota Avalon for the past few days. After troubleshooting with my mechanic this morning, we discovered that the front three ignition coils (when looking at the car from the front bumper) do not function when the car idles. However, they seem to work perfectly once the RPM increases past about 2500. I bought some new ignition coils to replace the originals, but no joy with those. The idle is still very rough and one can feel the misfire any time the engine is not revving higher than 2500 RPM. During our tests, we also found that the original coils do not produce a spark when the spark plugs are inserted. I did the same test with the new coils and had the same result, although the middle plug sparked briefly. The fuse for the ignition coils has been checked (it’s fine) so I’m fresh out of ideas. I know it must be electrical but was wondering where exactly the problem lies? I would greatly appreciate any and all feedback.