The fault code did not say to replace the camshaft position sensor. Codes never say to replace parts. They only indicate the circuit or system that needs further diagnosis. About 50 percent of the time the sensor in question is in fact the cause of the problem, but it's just as likely there is a wiring problem or a mechanical problem related to the sensor. Rust or metal filings on the end can interfere with generating a signal. Corrosion between two mating connector pins can reduce the strength of the signal. The engine will not start if either the camshaft position sensor or crankshaft position sensor is defective but on some engines, if the cam sensor fails once the engine is already running, it can continue running until it is stopped, then it won't restart. The cam and crank sensors rarely cause a misfire on just one or two cylinders.
Since it runs worse with the new parts, double-check the spark plugs' gaps, and be sure the plug wires are routed correctly.
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Saturday, January 19th, 2013 AT 3:08 AM