Hey guys 'n gals, please help. Flashing engine light came on, intermittent rough idle, gas odor near tank noticed. Cracked tank ventilation hose replaced-> no change. OBDII indicates 2 codes: P0103= "mass or volume air flow A circuit high" and P0400="exhaust gas recirculation flow". Should I test air flow meter and if so how? Replace charcoal canister? Check for vacuum leak? Any ideas?
Also, front end suspension/steering is tight but squeaks under dry conditions. Which rubber bushings should I start changing?