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Prev Professional Automotive Repair Technical Discussions for April 11, 2026
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2013 Toyota Prius Three 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: JTDKN3DU9D
It turned to be an intermittent coil failure. When I tested it, it fired a nice healthy blue spark. When the engine smoothed out I'm assuming it was firing. However I still don't know why the misfire counters were so off. Trouble codes: P0304 (Misfire cyl 4).
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