dirtyrat92 Posted June 21, 2012 Share Posted June 21, 2012 truck was running fine then all of a sudden when i stopped it idles rough. runs great on the road, good power and everything but idles rough. Quote Link to comment https://www.bigmacktrucks.com/topic/25787-need-help-on-mack-granite-please/ Share on other sites More sharing options...
waterdawg Posted June 22, 2012 Share Posted June 22, 2012 (edited) Any Codes? Could be a bad cam, #7 injector, or maybe injector cups. Have you had those updated yet?Not a mechanic myself. I am just giving you ideas based on my experience with granite's. Edited June 22, 2012 by waterdawg Quote Link to comment https://www.bigmacktrucks.com/topic/25787-need-help-on-mack-granite-please/#findComment-124973 Share on other sites More sharing options...
dirtyrat92 Posted July 19, 2012 Author Share Posted July 19, 2012 had code run on truck bringing up engine brake but replaced everything to do with jake brake and still ildes rough Quote Link to comment https://www.bigmacktrucks.com/topic/25787-need-help-on-mack-granite-please/#findComment-129576 Share on other sites More sharing options...
Dzlbudman Posted July 19, 2012 Share Posted July 19, 2012 Did u mess with the cruise control lately? If yes go to the dealer, you can hit the cruise buttons to many times and it brings the trucks idle down to 650.. Quote Link to comment https://www.bigmacktrucks.com/topic/25787-need-help-on-mack-granite-please/#findComment-129595 Share on other sites More sharing options...
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