Car Repair World

Vehicle Sensor Reference Guide Types Of Sensor In Your Vehicle Oxygen Sensors (O2) Throttle Position Sensor (TPS) Mass Air Flow Sensor (MAF) Engine Coolant Temperature Sensor (ECT) Intake Air Temperature Sensor (IAT) Exhaust Gas Recirculation (EGR) Most Common Engine Sensors understand the purpose and failure systems of most common sensors. Use your scantool and tech tip to diagram. Oxygen Sensors (O2) Purpose: Measure the amount of oxygen left in the exhaust stream to provide feedback to the computer about whether the air/fuel mixture is rich or lean. Symptoms: Poor fuel economy Rich fuel mixture Check Engine Light Failed emissions test Tech Tip: Test for O2 sensors in front of catalytic converter (S1B1 and S1B2 on your scantool). With the engine warm, graph the O2 sensor output. Rev the engine to approximately 2000 RPM. A good sensor will oscillate from below 0.2 volts to above 0.8 volts, looking approximately like a sine wave. A bad sensor will b...

Ford F-150/F-250:  Oxygen Sensor Replacement This article walks through the process of replacing the oxygen sensor on your Ford F-150 or Super Duty.  Ford F-150 (2004-2014) and the F-250, F-350 (2005-2014). If your check engine light goes on but you don't notice any symptoms, you need to use a code reader to determine the source of the problem. If the trouble code in your PCM's memory reads P0131, P0133, P0151, or P0153, you could be having trouble with your vehicle's oxygen sensor. The oxygen sensor is a clever little component that keeps track of your engine's exhaust and promotes an accurate distribution of oxygen, nitrogen, and fuel. For this reason, bad gas mileage can be both a symptom and a problematic result of a faulty oxygen sensor. This part can be expensive to professionally replace, so you might want to attempt a DIY job if you are able to. Materials Needed O2 sensor penetrating oil O2 sensor socket thread chaser floor jack two j...

Oxygen Sensor Replacement Safety Tip: Always wear safety glasses when working on your vehicle. Wear other personal protective equipment (PPE) when necessary, for example latex gloves or closed toe shoes. 1 Park the vehicle on a level surface. Set the parking brake and open the hood. 2 With the engine off and cool, locate the defective oxygen sensor in the exhaust manifold or pipe. If necessary, lift the front of the vehicle and support it with jack stands. Photo may not be specific to your vehicle 3 Disconnect the wire connector at the defective oxygen sensor. Spray the sensor threads and fitting with penetrating spray and let soak for a time. Photo may not be specific to your vehicle 4 Remove the oxygen sensor from the exhaust system. Use an oxygen sensor socket to reduce potential for damage. 5 If you are installing a universal oxygen sensor, cut off the connector from the original sensor and splice the connector wires to the new oxygen sensor. Foll...

Oxygen Sensor O2 Replacement Replace O2 Sensor In Car Helpful Information An  oxygen or lambda sensor  is used to determine the engine exhaust mixture which can then be controlled by the computer. These sensors are equipped with a heater that can fail causing the check engine light to illuminate. The oxygen sensor is designed to monitor the amount of oxygen that is in the exhaust system at any given second. This is done by using an active chemical that when heated can act as a low voltage generator. There are many conditions that can cause an oxygen sensor to miss-behave even though there is nothing wrong with the sensor, to be sure the sensor is a problem visit  how to test an oxygen sensor . Older models will have just one sensor in the exhaust system while newer cars will have as many as four sensors. The reason behind the multi-sensor systems is control and monitoring capabilities. A multi-sensor system will be able to monitor the exhaust gasses before and aft...