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Camshaft Position Sensors

Camshaft Position sensors monitor camshaft position and can work either independently or in conjunction with a crankshaft position sensor to supply input to the ECU.

Crankshaft Position Sensors

Crankshaft Position sensors monitor the position or rotational speed of the crankshaft to provide info to the ECU for spark timing.

Idle Air Control Valve

Provides idle speed control on throttle body or multiport injection equipped engines.

Idle Speed Control Motor

Idle speed control motors control idle speed to compensate for engine loads like air conditioning.  They are primarily used on older GM feed-back carburetors.

Knock Sensor

Knock sensors allow the ECU to run the engine at it's most advanced ignition timing point.  If you are experiencing an engine knock especially at high speed it is most likely a faulty knock sensor.

MAF Sensor

An alternative method of providing the same type of info as a MAP sensor.  There is a small wire in these units that can be damaged easily by mishandling the unit.  Touching these wires with your bare hands can render the unit inoperative.

MAP Sensor

Manifold absolute pressure sensor.  These provide input to your ECU about the absolute pressure in your manifold.  Your ECU uses this info to to balance the engines fuel input.

Throttle Position Sensor

Throttle position sensors provide input to the ECU regarding the relative position of the sensor.  Most sensors have one or two default position, one being idle and two being wide open throttle.  Faults in either of these signals typically cause the engine to go into limp mode.