Rsc1717 Posted March 14, 2023 Share Posted March 14, 2023 Have a 2014 cxu with the mp8 , this has happened twice turn on truck in the morning and starts up just fine , but after a couple of minutes it starts getting like a rough idle and then I try to give it some gas and it won’t settle down . So I turn it off and on again and it’s gone . Done it like three times In a row already wondering what this is . Quote Link to comment https://www.bigmacktrucks.com/topic/72604-rough-idle/ Share on other sites More sharing options...
Joey Mack Posted March 14, 2023 Share Posted March 14, 2023 I always check ground wires condition. All the gray wires. And check battery connections and the fused link at the batteries.. 1 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72604-rough-idle/#findComment-527220 Share on other sites More sharing options...
fjh Posted March 14, 2023 Share Posted March 14, 2023 2 hours ago, Rsc1717 said: Have a 2014 cxu with the mp8 , this has happened twice turn on truck in the morning and starts up just fine , but after a couple of minutes it starts getting like a rough idle and then I try to give it some gas and it won’t settle down . So I turn it off and on again and it’s gone . Done it like three times In a row already wondering what this is . Is it throwing up codes on the dash? The wiring on the injectors can deteriorate also the pins on the connections can be faulty! 1 Quote Link to comment https://www.bigmacktrucks.com/topic/72604-rough-idle/#findComment-527222 Share on other sites More sharing options...
Rsc1717 Posted March 14, 2023 Author Share Posted March 14, 2023 No codes , how would I be able to check for the injectors the cut out test ? I just thru a six pack in there a couple of months ago . Quote Link to comment https://www.bigmacktrucks.com/topic/72604-rough-idle/#findComment-527224 Share on other sites More sharing options...
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