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The procedure for changing a vehicle's engine sensor varies from vehicle to vehicle and from sensor to sensor, as there are different types. There are a large number of questions related to this topic already posted - and answered. Perhaps an "Advanced Searth" with something like "Oxygen sensor, 2004 Mazda Miata" would locate the answer sought. We're here to help, but there are limits to how much we can help that are built into the question, as is the case here.
changing the crankshaft sensor
Replace the oxygen sensor behind the engine - grey connector.
Engine coolant Temperature ( ECT ) sensor does not meet minimum thermostat regulating temperature. Need to replace ECT sensor. Make sure engine is COLD before changing. The sensor is on the right head back beside the last spark plug.
there is a sensor that is called a cam positioning sensor it is attached to the engine block which gets pretty hot try changing it. also there is one for the crank.
If your 3.5 engine is the same as that in a 2001 Olds Aurora, go to www.autorepair.about.com and search on "2001 aurora 3.5 crank sensor". One of the hits will be a diagram of where the crank sensor is located (above the starter motor). Note that for this engine, a "relearn" mjust be done after replacing the sensor. There is a link to the procedure for removing/installing the sensor and for doing the "relearn". Hope this helps
The location of the crankshaft position sensor depends on which engine your car has. If it is the V6 the crankshaft position sensor is on the side of the engine block next to the firewall. It is low on the block in about the center of the block. It is held in by a single bolt. The knock sensor is also back there but is screwed into the block with pipe threads On the four cylinder engine the crankshaft position sensor is behind the ignition control module which is below the intake manifold toward the rear of the engine. You can follow the spark plug wires to it. Changing it is a real nuisance but can be done with the engine in the car.
engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty. engine coolant temperature sensor is faulty.
The engine temp sensor is on the front of the engine, next to the thermostat housing.The engine temp sensor is on the front of the engine, next to the thermostat housing.
Remove the engine brush cover under the front of the engine. Remove the drive belt to make changing the sensor easier (optional). Remove the lower timing belt cover and the crankshaft pulley to access the crankshaft position sensor. Disconnect the electrical modules from the crankshaft position sensor, located next to the alternator. Take off the bolts with a socket wrench and remove the sensor.
Is there power to the coil? If not then find out why, if so then try the crank position sensor on the top rear of the block. ---------------------------- What year and engine? Might want to unplug then replug the MAP sensor on the firewall, just above the engine before changing the Crank Position Sensor (CPS). The CPS is about $100.
Because after you change a sensor you have to hook a OBD I or II to your computer's wire harness to clear the code. Or you can turn the backwards and then forwards and sometimes that will reset it. Either way changing the sensor won't reset the check engine light...U have to clear it thur your computer.