why does my durango die when i replaced ecm

Asked by Jul 09, 2016 at 04:55 PM about the 2004 Dodge Durango Limited 4WD

Question type: Maintenance & Repair

replaced ecm in 04 durango. the new ecm from identical durango. car starts and runs pefect for 10 seconds and dies. it will do this as many times as i want to try it. whats up do i have to do something to the ecm or what. please help me.

2 Answers

110

sounds to me like the ecm you put in it has security enabled on it and needs to have the keys programmed into it. Try and start the car and check to see if the security light comes on and stays on. if the security module is not happy it will stop the engine after a couple of seconds. hope this helps

110

one other thing is you might have to get the pinion factor reprogrammed in your abs because you switched the ecm. I know on 2003 and under as soon as you plug in a new ecu it wipes the abs programming and continues to ding nonstop when the engine is running.

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