×

Join Now

P0303 Diagnostic Trouble Code Discussion for January 2019

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
	2005 Ford Ranger XL 2.3L Excessive Emissions, Poor Idle Quality, Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 1FTYR10DX5 P0303: Misfire cylinder 3. Hi all, Thanks for reading. I have a real puzzler here. It is a new purchase for a long time customer. He bought it running poorly and brought it straight to me so I have no history or any info on how this all started, just what it is doing now. There is a...	January 05, 2019
	2005 Ford Ranger XL 2.3L Excessive Emissions, Poor Idle Quality, Hesitation, Poor Fuel Economy, MIL Lamp on VIN: 1FTYR10DX5 P0303: Misfire cylinder 3. Hi all, Thanks for reading. I have a real puzzler here. It is a new purchase for a long time customer. He bought it running poorly and brought it straight to me so I have no history or any info on how this all started, just what it is doing now. There is a...	January 06, 2019
	2010 Hyundai Accent GS 1.6L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Misfire VIN: KMHCM3ACXA P0303: Misfire 3 Cylinder. Vehicle came in on the tow. Customer was afraid to let it run due to how much the engine would shake and because of the carbon coming out of the exhaust system. Started it. Yes engine would shake. Pulled codes, misfires. Check spark plugs, full of fuel, ...	January 22, 2019
	2009 Audi A4 Quattro 2.0L Poor Idle Quality, Hesitation, Surge, Misfire, MIL Lamp on VIN: WAUVF78K79 P0303: Misfire cyl 3. After replacing the crankcase regulating valve and completing an enjoyable 12 mile test drive the engine all of a sudden now runs extremely rough, with misfiring. Multiple scan tools is showing a negative High Fuel Pressure reading despite swapping known g...	January 24, 2019