× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for July 2020

Cylinder 3 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2012 Ford F-250 Super Duty Lariat 6.2L Misfire, MIL Lamp on VIN: 1FT7X2B68C
P0303: . This a good one Ford people LOL. This is a BNSF railway truck. Truck came is with complaint of ses lamp on and missing. Scanned and found po300,po303,and po308. Was not missing at the time. Replaced 3 and 8 plug and coil with Ford parts, Driver came back a...
July 09, 2020
2008 Volvo S40 T5 2.5L Misfire VIN: YV1MS67218
customer brought car in misfiring. diagnosed coils for being bloated. mentioned a possible pcm issue. replaced coils miss was gone. he drove the car from san antonio to houston, said it started running bad in houston, but was fine with no codes after he sh...
July 14, 2020
2003 Jeep Liberty Limited 3.7L Misfire, MIL Lamp on VIN: 1J4GL58K63
P0303: Cylinder 3 Misfire Detected. this jeep has or hair pulled out . came in with misfire ,started on a cylinder , then another ,and another , then back to first one, then another. after many hours - we can duplicate it in the shop , under a load , between 1500 and 2000 rpm , misfires will...
July 23, 2020
2005 GMC Canyon Z71 Fleet 3.5L Poor Idle Quality VIN: 1GTCS14655
P0303: Cylinder 3 Misfire Detected. Does anyone know a trick how to see if the injectors is clogged without removing them. Just a trick
July 24, 2020
2005 GMC Canyon Z71 Fleet 3.5L Poor Idle Quality VIN: 1GTCS14655
P0303: Cylinder 3 Misfire Detected. Does anyone know a trick how to see if the injectors is clogged without removing them. Just a trick
July 25, 2020
2003 Jeep Liberty Limited 3.7L Misfire, MIL Lamp on VIN: 1J4GL58K63
P0303: Cylinder 3 Misfire Detected. this jeep has or hair pulled out . came in with misfire ,started on a cylinder , then another ,and another , then back to first one, then another. after many hours - we can duplicate it in the shop , under a load , between 1500 and 2000 rpm , misfires will...
July 27, 2020