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P0316 Diagnostic Trouble Code Discussion for October 2010

Misfire Detected On Startup (Within the 1st 1000 Revolutions)

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Trouble Ticket Help Requests for DTC P0316
Help Request Posted
2004 Mazda B4000 4.0L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 4F4YR46E54
P0316: Misfire Detected On Startup (Within the 1st 1000 Revolutions). Hi fellow Mazda techs. MIL flashing when vehicle came in. Hooked up IDS and found those codes. Data logger shows O2 precat fluctuating OK, O2S12 .91V steady and O2S22 .75V steady. LTFT bank 1 -15% and LTFT bank 2 25%. And then all of a sudden all lines on IDS ...
October 01, 2010