Question about Chevrolet Colorado
Posted by Anonymous on
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Posted on Jan 02, 2017
SOURCE: I have a 2006 Chevrolet
Crankshaft Position Sensor "A" Circuit
P0506 Idle Air Control System RPM Lower Than Expected
P2119 Throttle Actuator Control Throttle Body Range/Performance
P2431 Secondary Air Injection System Air Flow/Pressure Sensor Circuit Range/Performance
The last 3 I believe are all just piling on caused by the first. Once there is a problem with the crankshaft position sensor, in effect the engine timing is changing all by itself.
Which obviously can run really badly, causing all the other codes. It causes low idle, the drive by wire throttle actuator to be unable to make a difference, and the engine will slow to the point the air pump with not work.
I would suggest replacing the crankshaft position sensor or taking it into a place like Autozone to see if they can tell it is bad or not.
Posted on Jan 25, 2011
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