OK, cool. If the ETA was already replaced with a brand new one, that should not be the issue. Could be the idle switch, but yes you will need to check/clear codes (probably multiple times, say once per tank of fuel) and see which codes keep reappearing.
(What, the original ETA only lasted 450kmi? Sheesh!
)

(What, the original ETA only lasted 450kmi? Sheesh!

