1991 Olds 98 regency L V6 3.8 115000 Cam shaft sensor

1991 OLDSMOBILE
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SKOULLY
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Service engine soon light is on. Code from jumping the ALDL is 42. I cleaned off the connector and still 3 seconds after starting the service engine soon light comes back on.
How do i check if the sensor is good or not???
And how hard is it to get at the magnet on the cam shaft? Just to clean it.
Jan 25, 2007 at 5:04 PM
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SKOULLY
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The code is 41 from the ALDL. Not 42
Jan 25, 2007 at 5:05 PM