JerryB Posted February 3, 2009 Share Posted February 3, 2009 My 2004 Vision w/460 Mack engine was giving electrical fault code 8-5 so I've replaced the number 5 EUP. Could someone tell me if there is anything I need to do now before I run the engine as normal? TIA--Jerry Quote Link to comment https://www.bigmacktrucks.com/topic/8205-eup-installation-question/ Share on other sites More sharing options...
Mackpro Posted February 3, 2009 Share Posted February 3, 2009 My 2004 Vision w/460 Mack engine was giving electrical fault code 8-5 so I've replaced the number 5 EUP. Could someone tell me if there is anything I need to do now before I run the engine as normal? TIA--JerryYou need to have the Calibration # off the EUP installed in the trucks ECM. You can run truck with out doing this but it wont run its best. Quote Link to comment https://www.bigmacktrucks.com/topic/8205-eup-installation-question/#findComment-30271 Share on other sites More sharing options...
JerryB Posted February 3, 2009 Author Share Posted February 3, 2009 You need to have the Calibration # off the EUP installed in the trucks ECM. You can run truck with out doing this but it wont run its best.Thanks Mackpro68. Quote Link to comment https://www.bigmacktrucks.com/topic/8205-eup-installation-question/#findComment-30276 Share on other sites More sharing options...
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