CM871 complete EGR tune-up now CEL 1866
07-14-2021, (Subject: CM871 complete EGR tune-up now CEL 1866 ) 
Post: #9
RE: CM871 complete EGR tune-up now CEL 1866
Did you pull the two lines off the sensor? Inspect them for cracks or tears, they can sometimes clog up too. Also, did you take the intake pieces off and clean them, especially the Venturi pipe. Could just be soot build up.


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RE: CM871 complete EGR tune-up now CEL 1866 - Waterloo - 07-14-2021



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