Ravenwoods Posted 2 hours ago Share Posted 2 hours ago (edited) My daughter has a Legacy (automatic transmission) with about 180,000 miles on it. So the problem is very intermittent and has never occurred while I drive it. It seems this car has a MAP sensor instead of a MAF Sensor. There is no check engine light but a PO420 code occurrs from time to time. Poor mileage. Occasionally runs rough or stalls, hesitates, jerks and lunges. Does this sound like a failing MAP sensor? We already removed the throttle body and cleaned it. Edited 2 hours ago by Ravenwoods Add more information Link to comment Share on other sites More sharing options...
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