My liana's idle rpm suddenly drops as i turn on the ac on idle. It drops from 900 to 600 on turning ac on and if headlights are on at the same time it goes below 5k with a sudden check engine light & then boosts again but drops again and again.
Ignition coils tested ok
Throttle body cleaned
Any suggestion from all experianced fellows.....
Without ac the car works fine 95%. Some times it drops rpm on 1st or 2nd gear...
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