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Old 07-04-2009, 10:45 AM   #1
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Sensor ground reading
Can someone tell me why when I check the resistence to ground through any of the engine sensor ground wires it reads around 20 ohms. This seems a little high. It only does it with the key on, once I turn the key off it goes back to zero. It is a 1227730 ecm running a 2.8L V6.Thanks
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Old 07-04-2009, 03:06 PM   #2
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Re: Sensor ground reading
The voltage drop is affecting the ohms reading.

Put the DVM on a low DC volt scale and do the same. During key on it will show the actual voltage drop through the wire.

RBob.
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