My name is Rose from Bondo, Kenya. My Toyota RAV 4 , 2004, D4 engine has a problem of not starting. My mechanic checked it and said the alternator needed replacement. I bought another alternator and the car worked well just for one day and the problem recurred. It is serviced regularly and the engine is flushed whenever we do service. It had been showing the engine check light and diagnostic was done and the report said it had O2 sensor heater circuit malfunction. We replaced the sensor too and the engine check light is no more. What can be done to solve the problem of not starting?

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