Today I pump 45 dollars of gas on my BMW it was working good gas gage was working good everything was working good hours later I turn on my car and my gas gauge was on E and my temperature gauge was on extreamely hot got off turn off my car check the water filter was full check the oil was full lifted their for the next day I turn on my car and the temperature gauge was on hot and my gas gauge was on E I drive my car home and it was running good what could b the problem