Your 19901 bronco II cranks but won't start?

Answer 1

Your missing either one of two things fuel or spark... When you turn your key on listen for your fuel pump, you should here it... If you here the pump, the next thing to do is get a fuel Pressure gauge on it and make sure you have roughly 35psi. if you dont have fuel pressure, check for restrictions in the line(like a plugged or frozen fuel filter) because if you here the pump you should at least register a little pressure... If you have no pressure, or little pressure and you fuel lines are not restricted then you will need to replace the fuel pump. On your vehicle it is in the tank, which means you have to drop the skid plate and drop the fuel tank to replace it. Fuel pumps are a very common failure on the Bronco to test spark there is a simple way to do this, go to your local tool store and buy a tester, its very inexpensive and it hooks up inline from your spark plug wire to the plug itself if it lights up when you turn the key over you have spark Now if you have both of these things and it still wont fire then the problem could be within the ECU itself, it happens... If you inexperienced at fixing your own vehicles I would suggest taking it to a garage at this point.