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Thread: 1990 Jeep Cherokee Emission Control System

  1. #1
    Join Date
    Aug 2009

    Default 1990 Jeep Cherokee Emission Control System

    in the manual it has a very small picture of all of the emission control lines and the lines that connect to the air box. I was wondering if there is a better picture of this diagram or one that is more clear on the routing of all of the tubeing. I have a 1990 Jeep Cherokee 4.0L Automatic. Thanks for the help.

  2. #2
    Join Date
    Jan 2007


    Hi usnfoley13,

    In addition to that photo you're referring to, there's also an illustration on page 6-6 - illustration 1.9i - that shows the vacuum hose routing diagram for your vehicle. I doublechecked it with the 1990 Jeep factory service manual, and it's the same.

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