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03 7.3 /605,000 miles..check light comes on w/P1316 codes detected, I had buzz test and other misc test, UVC checked, and other electrical tests on external wires on valve cover harness w/Ford tech, we plugged test IDM and code did not come back, Tech said it was IDM, installed new rebuilt IDM, now it flashes more, it seems to run fine. When I troump on it I can get light to flash. Prior to putting the new IDM it would only flash when engine was cold and stay off until next morning and then same thing. Is it possible that PCM has issues and the IDM was showing problem...does any one have any ideas?


ken
 
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