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Crankshaft Position Sensor

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Old 09-15-2018, 09:40 PM
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Crankshaft Position Sensor

Hey Guys,

I got a quick question about the crankshaft position sensor and how it fails. I'm guessing I have a failing sensor at the moment.

The problem is that sometimes while I'm driving, the tach goes down to zero and my check engine light comes on and gives me the crankshaft position sensor fault. If I keep driving the tach eventually starts to work again (sometimes) and then I just clear the code and everything is ok again. On occasion the truck just cranks over and doesn't fire up, and I notice during this time the tach does not move at all. After I wiggle the wiring near the sensor and push in the connector a bit it seems to start eventually. Does this sound like a failing crankshaft sensor, or a wiring issue near the sensor? Any help would be appreciated, as well as a good location to buy a new sensor if it is in fact failing.

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Jeff
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Old 09-16-2018, 12:53 PM
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If you think jiggling the connection helps then definitely clean the connection and use some dielectric grease to help prevent corrosion from causing issues. If that doesnt help then replace the CPS.
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Old 09-16-2018, 07:45 PM
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Any ideas on where to get a new CPS online if needed?

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Jeff
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Old 09-16-2018, 09:09 PM
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Old 09-17-2018, 06:08 PM
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Stay away from the local parts stores, I’ve had two and barely got a year out of each one
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