Tforconcrete Posted March 28, 2019 Share Posted March 28, 2019 (edited) I have a 2008 Mack with a MP7 engine with a delete kit installed. In the lower gears the truck seems to run fine but in the top gears it falls flat on its face. There is an engine malfunction light on all the time (Lightning Bolt). Checked codes and no codes are listed. Seems like a fuel issue but not sure. Also is there a way to get flash codes from the truck itself without computer? Any help is greatly appreciated. Edited March 28, 2019 by Tforconcrete Quote Link to comment https://www.bigmacktrucks.com/topic/56424-tforconcrete/ Share on other sites More sharing options...
Mackpro Posted March 28, 2019 Share Posted March 28, 2019 If a CXP you can press and hold the button under the dash display and it will reAd out the MID codes Quote Link to comment https://www.bigmacktrucks.com/topic/56424-tforconcrete/#findComment-419249 Share on other sites More sharing options...
RobM626 Posted March 31, 2019 Share Posted March 31, 2019 On 3/28/2019 at 1:48 PM, Tforconcrete said: I have a 2008 Mack with a MP7 engine with a delete kit installed. In the lower gears the truck seems to run fine but in the top gears it falls flat on its face. There is an engine malfunction light on all the time (Lightning Bolt). Checked codes and no codes are listed. Seems like a fuel issue but not sure. Also is there a way to get flash codes from the truck itself without computer? Any help is greatly appreciated. My 08 granite gives the codes selecting diagnostics menu on dash Quote Link to comment https://www.bigmacktrucks.com/topic/56424-tforconcrete/#findComment-419437 Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.