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Roger, ASE Certified Technician
Category: Subaru
Satisfied Customers: 109
Experience:  Automotive Technicianl
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Have 2010 tribecca PO302 304 306

Customer Question

have 2010 tribecca PO302 304 306
Submitted: 1 year ago.
Category: Subaru
Expert:  Roger replied 1 year ago.

Hello, I'd be happy to help! Do you have access to a scan tool that shows data stream information?

Customer: replied 1 year ago.
Expert:  Roger replied 1 year ago.

Ok good, with it running and at operating temperature check your fuel trim numbers, also check the o2 sensor voltages to check if they're switching correctly. Have you checked the misfire counter? If so, how often are the misfires registering and is there any cylinder that has a significant amount more than the others?