Question about 2004 Chevrolet Colorado
Posted by Anonymous on
Doesn't have one , not needed with
Camshaft Actuator System
The camshaft position (CMP) actuator system is used for a variety of engine performance enhancements. These enhancements include lower emission output through exhaust gas recirculation (EGR) control, a wider engine torque range, improved gas millage, and improved engine idle stability. The CMP actuator system accomplishes this by controlling the amount of intake and exhaust valve overlap.
The camshaft position (CMP) actuator system is controlled by the powertrain control module (PCM). The PCM sends a pulse width modulated 12-volt signal to a CMP actuator solenoid in order to control the amount of engine oil flow to a Cam Phaser passage. There are 2 different passages for oil to flow through, a passage for cam advance and a passage for cam retard. The Cam Phaser is attached to a camshaft and is hydraulically operated in order to change the angle of the camshaft relative to crankshaft position (CKP). Engine oil pressure (EOP), viscosity, temperature and engine oil level can have an adverse affect on Cam Phaser performance. The PCM calculates the optimum cam position through the following inputs:
Posted on Jul 24, 2016
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Posted on Jan 02, 2017
SOURCE: bad egr valve
the egr valve is located at the end of an exhaust supply pipe (1/2" diameter) from the exhaust manifold. there is also a sticker under the hood that shows this location, it is the emissions sticker.
Posted on Mar 23, 2009
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