Hi guys need some advice on this issue,my car is a mazda familia bj5p,suddenly check engine light appeared,and the rpm also not constant(some times)especialy in the morning,in cold start.some times engine is going to stall.so i took the car in to a garage (its a reputed garage),they scanned it,the report said TOO RICH fuel(or some thing closer to this)the mechanic cleand the air flow sensor and the throttle body,i he told me the plugs were ok.(i did a tune up 2 months back)after cleanin these parts car was ok,i started pumpin 95 octane fuel as well.my problem is i have the previous issue again,but now check light dosent appear.guys need some advice on this,am in a deep trouble.cant take the car to each and every garage.thanx in advance.