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Daniel Wilson
Daniel Wilson,
Category: Medium and Heavy Trucks
Satisfied Customers: 1964
Experience:  Owner at DJ Wilson
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We have a DDEC 4 that backfires and coughs when you let up

Customer Question

We have a DDEC 4 that backfires and coughs when you let up on the throttle. Here is what we have done. Three heads, two sets of injectors, new computer, new wiring harness from computer to jakes and injectors and inside the cab, new jakes, every mechanic in southwest Idaho is stumped - we need help.
Submitted: 1 year ago.
Category: Medium and Heavy Trucks
Expert:  Daniel Wilson replied 1 year ago.

Hi Tim, My name is***** will be glad to try to help. Do you have DDEC troubleshooting software to read and monitor live data and the PWM when this is happening? This is what you will need to properly troubleshoot this problem. Let me know

Expert:  Daniel Wilson replied 1 year ago.

what are you getting for fault codes?

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