mikefan31 Posted October 22, 2018 Share Posted October 22, 2018 High I've got a 97 Mack rd688s with the E7 - 400 engine every now and again when you come out to this truck it won't start at all no smoke or anything have multiple codes for multiple sensors if you unplug the engine control module and plug it back in truck starts up immediately no problems leaning towards the computer being shot but want to get more input thanks for your help Quote Link to comment https://www.bigmacktrucks.com/topic/54638-97-rd688s-no-start-until-you-disconnect-and-reconnect-computer/ Share on other sites More sharing options...
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