ECM won't communicate

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Posted to Technical Discussion Forum on 4/24/2009 14 Replies

A couple months ago, I did an engine overhaul on this truck:

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At the time and as usual after roadtesting an engine job, I scanned it with my brick and I couldn't communicate with the ECM. Every other module communicated fine. I voltage dropped ... Login to read more.

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Vehicle Data

2002 Dodge Ram 1500 4.7L

Engine	4.7 L
Trans	4-speed Automatic (Electronic)

Vehicle Data

2002 Dodge Ram 1500 4.7L

Engine	4.7 L
Trans	4-speed Automatic (Electronic)

14 Replies Received (View Replies)

14 Replies Received (Hide Replies)

Vehicle Data

2002 Dodge Ram 1500 4.7L

Vehicle Data

2002 Dodge Ram 1500 4.7L