Bojangles Posted April 4, 2015 Share Posted April 4, 2015 Recently replaced my truck cab, and now my engine will turn over but won't start. Keep getting code 6 4. Truck is a 2001 Mack CH 600 with a E7 427. Have already repeatedly check the grounds. Any ideas or suggestions? Quote Link to comment https://www.bigmacktrucks.com/topic/39558-6-4-code-on-e7-427/ Share on other sites More sharing options...
Keffer inc Posted April 5, 2015 Share Posted April 5, 2015 Circuit: "J1939 Link" Failure: "Abnormal Freq.,PW or T"Not sure what it means but that's whats listed as problem in Vmack Codes. Perhaps an electrical cord is not properly plugged in all the way? Quote Link to comment https://www.bigmacktrucks.com/topic/39558-6-4-code-on-e7-427/#findComment-285519 Share on other sites More sharing options...
41chevy Posted April 5, 2015 Share Posted April 5, 2015 Recently replaced my truck cab, and now my engine will turn over but won't start. Keep getting code 6 4. Truck is a 2001 Mack CH 600 with a E7 427. Have already repeatedly check the grounds. Any ideas or suggestions?http://www.bigmacktrucks.com/index.php?/topic/27990-trouble-code/I understand most common causes are a shorted wire or wires to the ECU'sThere are a pair of wires that are twisted together. That is done to cut down or eliminate frequeny interferene from other systems. The link above give a few tips to look for, including miss matched processors.I'll stick with my pre computerized units. Quote "OPERTUNITY IS MISSED BY MOST PEOPLE BECAUSE IT IS DRESSED IN OVERALLS AND LOOKS LIKE WORK" Thomas Edison “Life’s journey is not to arrive at the grave safely, in a well preserved body, but rather to skid in sideways, totally worn out, shouting ‘Holy shit, what a ride!’” P.T.CHESHIRE Link to comment https://www.bigmacktrucks.com/topic/39558-6-4-code-on-e7-427/#findComment-285524 Share on other sites More sharing options...
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