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  1. 5.0 Mustang Code 18 causes??

    5.0L Tech
    Hey guys, so i checked codes today in my 88 5.0 LX AOD, and i got code 34 which i know for a fact is my EGR, but i also got code 18, it says it means SPOUT connector? I checked and my spout connector is there, but still comes up with code 18, what would cause this :headscratch: Thanks!
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