MPROP / FCA Pigtail / Connector. We finally found that if we reached down and touched the electrical connector on the MPROP with the engine running that the symptoms would change. Replacing the pigtail cured the problem!
Cummins Oil Cooler For Dodge Cummins 5.9L 12V 6B 6BT 1989-1997 WITH Gaskets New
Cummins Oil Cooler W/ Gaskets For Dodge Cummins 5.9L 6B 6BT 1998-2002 3957544
New Cummins Oil Cooler WITH Gaskets For Dodge Cummins 5.9L 6B 6BT 1989-1997
