Ima Posted February 3, 2022 Share Posted February 3, 2022 Hello guys, I need a little bit of help I have a 2013 Mack pinnacle with mp8 engine, trucks was running fine I had a dpf deleted 3 weeks ago and now the truck start shutdown on my while it’s driving RPM get down to idle and gas pedal will not respond turn the keyswitch off and it don’t kill the engine, it remain in idle until the truck is completed parked and speedometer reached “0” and engine shutdown it self turn the keep off and on and truck work fine for 15 o 20 minutes and same problem happen again I disconnected speed sensor when for a run and it just completed shutdown the engine on my since speedometer was on “0” all the time, reset the keys and y runs fine agains Only code on Ecm Mid 140, ppid 278 fmi 9 mid 144 psid 40 fmi 4 One time it show mid 144 psid 230 fmi 5 Quote Link to comment https://www.bigmacktrucks.com/topic/69146-2013-mack-mp8-problem/ Share on other sites More sharing options...
67RModel Posted February 3, 2022 Share Posted February 3, 2022 A stated by others in your other thread. Its the ECM. The engine has the mechanical ability to run but the computer is not satisfied somewhere along the way and is derating and/or shutting you down. Its that simple. Maybe take it back to whoever deleted it and have them "fix" it. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/69146-2013-mack-mp8-problem/#findComment-488434 Share on other sites More sharing options...
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