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P0303 Diagnostic Trouble Code Discussion for August 2019

Cylinder 3 Misfire Detected

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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2003 Toyota Corolla CE 1.8L MIL Lamp on VIN: 1NXBR32E73
P0303: Cylinder 3 Misfire Detected. vehicle failed emission test. p300-p304 current. p0171 and p1315 current. long term fuel trim high. 25 at idle goes up to 44.5 off idle and while driving. short term fuel trim normal, between -7 and 7 switching constantly. map has good readings around 2g a...
August 02, 2019
2009 Cadillac STS 3.6L Misfire VIN: 6G1EL55779
P0303: Misfire cylinder 3. ... short: (Car is a Holden Commodore 2009 - no Holden in iATN makes database. Same V6 3.6 LY7 engine Caddilac uses) Client called me talking about loss of power and exhaust smoke. Received car and found fuel injector cylinder 3 mechanically stuck ope...
August 08, 2019
2011 Jeep Grand Cherokee Limited 3.6L Poor Idle Quality, Misfire VIN: 1J4RR5GGXB
Thanks in advance, had this jeep in a little while ago with p0420 code and fan circut code. i replaced b1 cat and sent to dealer for front control module and program. about a month later came back to me with misfire codes on 1,3,5 and p219a. i replaced bot...
August 15, 2019
2001 Toyota Celica GT 1.8L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: JTDDR32TX1
P0303: Cylinder 3 Misfire Detected. The car came in running rough scanned and found the codes above.Plugs were gas fouled and replaced them, Had known good AF sensor on shelf with no change ( Also ordered new Denso sensor didn't help, Fuel pressure looks good, Checked grounds on right fender...
August 27, 2019