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Search results

  1. D

    OXYGEN SENSOR LOCATION

    looks like the Oxygen sensor is on the elbow between the Turbo and the DOC/DPF.. The top one is the O2 and the bottom one must be the pre-DPF NO2?
  2. D

    What is this?

    Old thread... but... That is the vacuum actuator for the high pressure EGR cooler bypass valve. From what I read it opens up during a cold start to get the engine up to temp quicker then is typically closed the rest of the time so that all EGR gas goes through the cooler passages. .
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