CPS Question

Discussion in 'Engine' started by shirleydrive, Mar 21, 2014.

  1. shirleydrive

    shirleydrive Member

    Messages:
    44
    Joined:
    Feb 8, 2013
    Car:
    E320 w210 1998 61K
    Am aware that the most common symtom of CPS failure is that the engine tends to die at idle ( at lights, junctions etc), usually when the engine is up to operating temperature..
    The CPS's job is to detect a missing tooth on the flywheel. What I have often wondered is why the sensor seems to fail at idle speed rather than, say , 3000rpm?
    Anyone have any ideas?
    Mike W210 E320 63K
     
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