Just purchased a granite with an e7-370. It has no low rpm power. takes forever to get going empty. soon as it hits 14-1500 rpm it takes off like a rocket, shift then back to a dog until 14-1500. Any ideas what to look for? have read something about updating the ecm but seemed like no Mack dealers can actually do that.
E7 370 No power
Discussion in 'Mack Forum' started by kgbarnett22, Feb 16, 2023.