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OBD Codes for CPS - Yet car runs OK. ??? 200

posted by  MrNabisco on  Fri Nov 4 13:39 CST 2016
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last visit: Wed Oct 22 12:36 CST 2014
[RELATED]

Hi Folks,

I'm getting OBD codes from plug holes #2 and #6 indicating loss of RPM sensor, yet the car seems to run fine.

#2 code 1-3-1

#6 codes 1-4-4 and 2-1-4

The codes turn on the CEL.

The car starts and seems to run OK. The rpm sensor is not that old.

So I'm looking at an intermittent short somewhere?
I checked the plugs under the dash on the passenger side. Will check the CPS plug next.

Suggestions?

91 245 M47 LH3.1 205k
Most every part swapped at some point except the M47...

Thanks,
Bert






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