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Author Topic: Camshafts sensor testing  (Read 528 times)
pedja31
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« on: February 08, 2020, 12:03:04 am »

Anybody have problem with camshaft sensor on verado 250hp 2005. I buy new sensor part number 8M0011987 and I check resistance and got 7.7mohms but in owners manual is 23.2mohms with 70F. Anybody know proper way to testing sensor or maybe mercury replace old part with this one. Thank you in advance
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thunderstruck
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« Reply #1 on: February 10, 2020, 09:02:43 am »

My manual shows resistance between pins A/B and B/C should be 23 ohms also. 

Will the motor run with the new sensor?  Does the motor show alarms with the new sensor??

I would try running the motor then get another sensor if the new one doesn't work either.

If you have access to a CDS the sensor will show 5 volts except when #1 or #6 pistons are at TDC when the value will be 0 volts.

If the camshaft position sensor is bad the motor will show an alarm and limit power to 75%.



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pedja31
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« Reply #2 on: February 17, 2020, 05:05:01 pm »

Thank you Thunderstruck, I can't run engine this time. I am in Michigan and is still cold. I chack restistence on my old sensor and is not stabile going from 17 to 7 and some time 0,1. Sensor is bad for sure, I know lot of the time for I starting engine cranking more than usual. Engine running two rich and around 2000rpm  is vibration from engine. Spark Plugs is new, all ignition coils is new, filters new, fuel pressure is good
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