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sprinkles08, Chrysler/Dodge/Jeep master tech
Category: Dodge
Satisfied Customers: 22827
Experience:  ASE Master and Advanced Certified, Chrysler/Dodge/Jeep Master Certified, Trans and Hybrid Specialist
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Gpt a 2007 dodge cummins with 6.7 in it. going down road the

Customer Question

gpt a 2007 dodge cummins with 6.7 in it. going down road the other day and it just died. would not restart. gear selector on dash would not light up but everyting else does. thought it was ecm. local shop could not communicat with it. put in another one and truck started up and runs but it still will just shut down at any time and not restart for couple hours or til next day. sometimes it will crank over and sometimes not
Submitted: 2 years ago.
Category: Dodge
Expert:  sprinkles08 replied 2 years ago.
Hello and welcome to JustAnswer!
You may have quite a few things going on. The ECM was definitely down initially and I suspect the replacement is also going down. If it is then it could be an internal failure in the replacement, a lost power or ground to it, or a short on a couple different circuits. If the sensor ground circuits short to voltage it will prevent the ECM from waking up, if one of the reference voltage circuits shorts to ground it will take the ECM own. These could be wiring issues, internally shorted sensors, or an internally shorted fan clutch.
When it doesn't start now does it still have communication?