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#1
01-01-2008, 08:54 PM
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crank. position sensor question.
my truck developed a random misfire over the past 6 months, really bad @ times and could not connect any set of circumstances to the misfire. I thought I would check the CPS ,so I took it offand found what looked to be a rubbing mark on the surface of the CPS. What could cause this?? A warped trigger wheel? If moisture builds up on the wheel would it cause a misfirecondition??
thanks in advance, Ron 
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#2
01-02-2008, 04:11 PM
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Re: crank. position sensor question.
A warped ring is a possibility. Dirt, sand, gravel, etc. could also cause the rubing. There is very little clearance between the ring and sensor.
I would not expect moisture to cause an eroneous sensor reading, as it is magnetic, and water shouldn't affect a magnetic field. If the water were to freeze on the ring, this could also be a source of the marks.
__________________
'04 Cavalier coupe M/T 2.2 Ecotec Supercharged 14 PSI boost, charge air cooler, 42# injectors Tuned with HP Tuners Poly engine/trans/control arm bushings Self built and self programmed progressive methanol injection system
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