Subaru Problems? Ask a Mechanic for Answers ASAP
It might be an issue with the mass air flow sensor. I would check and make sure the air filter is in good condition and that the air filter box hasn't been filled up with food or something from rodents. If it's sits or has sat this can happen. I once found 5lbs of dog food in an air cleaner box because of chipmunks.
Take a look and let me know.
Hi, do you need further assistance with this?