With a 1995 ES300 the engine runs rough, shutters, and makes a rumbling noise about once a or twice a tank of gas. The problem goes away after turning the engine off for about 10-15 minutes. Oddly, the problem seems to occur soon after filling with gas or when nearly empty! The problem can occur at highway speeds or at slow, city speeds. (Two Lexus dealers have not found yet found the solution.) The ERG has been suggested as the problem but this has not been replaced yet. Any other ideas or suggestions?
