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There is no such thing as detectable "reversion" airflow to a MAF. Especially on a non turbocharged car. The MAF has no clue about the direction of flow, only how much energy it takes to keep the wire or film heated. I doubt that the "negative" aspect of your graph is ever seen. Even at idle, you shoud see 2-5 g/s. I wonder why the graph is kg/h... that ...


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P0100 A code P0100 may mean that one or more of the following has happened: The MAF may be disconnected, or a wiring connection may be bad The MAF sensor may be faulty If the MAF sensor element is dirty use disc brake cleaner. Do not use Throttle body cleaner because it will leave a residue that will muck up the sensor. A residue on the hot wire element ...


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Vacuum leaks can cause a bad MAF reading and result in a fault code. I would check The intake boot connected to the MAF sensor for any cracks or holes. I had this code show up on my '94 BMW. I spent the money on a new MAF sensor only to find out that I could have fixed the problem with a $20 intake boot.


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This is gas cap check valve. I tried to edit my post but It would let me. So here is a follow up for clarification. The check valve in the gas cap helps to regulate the pressure in the EVAP system.


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Milan, I recommend that you purchase a paper Chilton's or Haynes repair manual for your car. They cost around $30 at your local autoparts store. Many manufacturers have provided a 'secret' code that you can use to turn your check engine light into a blinking code reader. The instructions for that tend to be written in the repair manual (not all ...


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Regarding the whooshing sound when you remove the gas cap. This could be a defective gas cap check valve. The check valve performs 2 functions. When the fuel pump takes fuel from the tank the fuel volume decreases creating a partial vacuum inside the tank causing the fuel pump to work harder. The check valve injects outside air in to equalize the pressure ...



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