Ford AC Compressor
Posted 04-18-2013 at 12:03 PM by marcitize12
When the gas pedal in the car is pushed this causes the "throttle valve" that it is connected to, to open allowing air in. The ECU notices that the throttle valve is open and increases the rate of fuel to be mixed with the air. This air and fuel in respective amounts need to reach the cylinders at the same time so that there is no hesitation or stalling when the engine begins to work.O2 sensors observe the air amount going into the engine, and also the oxygen amount leaving the car with the exhaust. With this information the ECU constantly fine-tunes the fuel delivery so that the air-to-fuel ratio is continually correct.Hub Bearings and Hub Assemblies are another thing that is completely pointless to purchase used. You are either spending your own time installing the hub bearing, or paying a mechanic to install the hub bearing that may fail at any time. Time and mileage are both contributing factors to the failure of a hub bearing. It is difficult to tell if a hub bearing is OK before installing it, and virtually impossible to tell how long it will last. The longer the hub bearing has sat the more chances there are for that hub assembly to fail.
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