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P0301 Diagnostic Trouble Code Discussion for January 2012

Cylinder 1 Misfire Detected


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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2005 Ford F-150 FX4 5.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX14565
Truck has random misfires pretty much all the time only on bank 1. Cylinder #3 seemed worse when truck came in. Tried coil, replaced spark plug with no change. Switched fuel injectors between cylinder #2 & #3. Misfire moved to cyl. #2. Replaced all injecto...
January 04, 2012
1999 Subaru Legacy L 2.2L MIL Lamp on VIN: 4S3BD4357X
P0301: Cylinder 1 Misfire Detected. Customer only concern is MIL to pass inspection. There is no symptom of misfire detected, but light can be blinking. Initial test could not verify misfires, but spark plugs and wires very old and worn, and wires saturated with oil due to leaking tube seals. We...
January 06, 2012
1996 Ford Windstar GL 3.8L Misfire, MIL Lamp on VIN: 2FMDA5149T
P0301: Cylinder 1 misfire. ... engine light on. Scan computer - found p0301 #1 cylinder misfire. Monitored misfire data counts, #1 cylinder misfiring consistently but misfire is very slight & only appears at idle. When road testing at cruising speed or freeway speeds misfire count f...
January 09, 2012
2003 Ford Escape XLS 3.0L Misfire, MIL Lamp on
Car came in smoking from tailpipe, mil flashing, running rough. I originally thought it was simply a coil pack- however raw fuel is coming out of the tailpipe, fuel-- not just water and fuel. I figured the # 1 injector was stuck open. I replaced it with a Ford...
January 09, 2012
2003 Toyota Tacoma DLX 3.4L MIL Lamp on VIN: 5TEWN72N33
P0301: Cylinder 1 Misfire Detected. Help Toyota techs, I have a very good customer that has a check engine light comes on spuratically. The code is for Cyl. #1 misfire. It comes on after 2 or 3 weeks of driving under any conditions. This customer is very knowledgable about his vehicle and says i...
January 16, 2012
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B43
vehicle came in with a high idle complaint and a vac noise with p0303 #3 misfire , p0507 idle higher than expected and p0171 bank 1 lean smoked test found a leak in a plastic elbow under the intake replaced the elbow and the # 3 coil (cop) after repairs the id...
January 17, 2012
2003 Toyota Tacoma DLX 3.4L MIL Lamp on VIN: 5TEWN72N33
P0301: Cylinder 1 Misfire Detected. Help Toyota techs, I have a very good customer that has a check engine light comes on spuratically. The code is for Cyl. #1 misfire. It comes on after 2 or 3 weeks of driving under any conditions. This customer is very knowledgable about his vehicle and says i...
January 18, 2012
2011 Ford E-350 Super Duty 5.4L No Start VIN: 1FDWE3FL4B
P0301: misfire. It cranks and no hit or any type of trying to start. Security is proving out no lamp or codes. all connectors look good.
January 23, 2012
2005 Ford F-150 FX4 5.4L Poor Idle Quality, Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1FTPX14565
Truck has random misfires pretty much all the time only on bank 1. Cylinder #3 seemed worse when truck came in. Tried coil, replaced spark plug with no change. Switched fuel injectors between cylinder #2 & #3. Misfire moved to cyl. #2. Replaced all injecto...
January 04, 2012
1999 Subaru Legacy L 2.2L MIL Lamp on VIN: 4S3BD4357X
P0301: Cylinder 1 Misfire Detected. Customer only concern is MIL to pass inspection. There is no symptom of misfire detected, but light can be blinking. Initial test could not verify misfires, but spark plugs and wires very old and worn, and wires saturated with oil due to leaking tube seals. We...
January 06, 2012
1996 Ford Windstar GL 3.8L Misfire, MIL Lamp on VIN: 2FMDA5149T
P0301: Cylinder 1 misfire. ... engine light on. Scan computer - found p0301 #1 cylinder misfire. Monitored misfire data counts, #1 cylinder misfiring consistently but misfire is very slight & only appears at idle. When road testing at cruising speed or freeway speeds misfire count f...
January 09, 2012
2003 Ford Escape XLS 3.0L Misfire, MIL Lamp on
Car came in smoking from tailpipe, mil flashing, running rough. I originally thought it was simply a coil pack- however raw fuel is coming out of the tailpipe, fuel-- not just water and fuel. I figured the # 1 injector was stuck open. I replaced it with a Ford...
January 09, 2012
2003 Toyota Tacoma DLX 3.4L MIL Lamp on VIN: 5TEWN72N33
P0301: Cylinder 1 Misfire Detected. Help Toyota techs, I have a very good customer that has a check engine light comes on spuratically. The code is for Cyl. #1 misfire. It comes on after 2 or 3 weeks of driving under any conditions. This customer is very knowledgable about his vehicle and says i...
January 16, 2012
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: WVWPD63B43
vehicle came in with a high idle complaint and a vac noise with p0303 #3 misfire , p0507 idle higher than expected and p0171 bank 1 lean smoked test found a leak in a plastic elbow under the intake replaced the elbow and the # 3 coil (cop) after repairs the id...
January 17, 2012
2003 Toyota Tacoma DLX 3.4L MIL Lamp on VIN: 5TEWN72N33
P0301: Cylinder 1 Misfire Detected. Help Toyota techs, I have a very good customer that has a check engine light comes on spuratically. The code is for Cyl. #1 misfire. It comes on after 2 or 3 weeks of driving under any conditions. This customer is very knowledgable about his vehicle and says i...
January 18, 2012
2011 Ford E-350 Super Duty 5.4L No Start VIN: 1FDWE3FL4B
P0301: misfire. It cranks and no hit or any type of trying to start. Security is proving out no lamp or codes. all connectors look good.
January 23, 2012