I have just brought a new battery for my legnum but the idle thing goes right down and then my car cuts out. Can you tell me how to or what to fix.
Have you driven it a lot like that?. Sometimes when you disconnect the battery the ECU must re-learn, and that can take up to 20-30 miles. Maybe, just maybe that's all it is. If it continues after that you probably should run an OBD scan
Search Mitsubishi Questions