robnels218 Posted September 6, 2015 Share Posted September 6, 2015 My 05 mack with a e7 shutdown while driving, towed it back to shop had fault codes for all eup, checked wires from each pump to ecm connector all where good. hung a test ecm on truck it started got a new ecm from mack put it on truck started and ran for two days then shut down again with the same codes hung test ecm truck started before I get another ecm im at a loss what I should be checking fordon't want to fry another ecm any advice would be appreciated Quote Link to comment Share on other sites More sharing options...
Challenger Posted September 8, 2015 Share Posted September 8, 2015 How did the new EECU get programmed? Was all the customer data programmed? Ive never heard of a customer picking an EECU up. Quote Link to comment Share on other sites More sharing options...
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