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P0301 Diagnostic Trouble Code Discussion for April 2009

Cylinder 1 Misfire Detected


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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2002 Honda Accord EX 3.0L Misfire, MIL Lamp on VIN: 1HGCG16592
P0301: Cylinder 1 Misfire Detected. car came in with CEL flashing / misfire codes. Happened to cust. suddenly after refueling. This is a 1st time customer. Misfire codes for 1,2 & 4. Fuel pres. good. No intake leaks. Checked front bank plugs / swapped around plugs and coils to see if misfire...
April 02, 2009
2005 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C4FY58B55
P0301: Cylinder 1 Misfire Detected. ... help on this one. A 2005 PT Cruiser came in for mil light on and skipping. Found P0301 code stored (misfire #1). Check ignition system perform maintenance tune up.Plugs,wires and filters.Customer took vehicle,light came back on with same symptoms.Sent vehi...
April 07, 2009
1997 Kia Sportage 2.0L Poor Idle Quality, MIL Lamp on VIN: KNDJA7232V
P0301: Cylinder 1 Misfire Detected. Hi group, this Kia starts up good but starts to run rough sometimes the computer goes in and out of closed loop the coolant temp stays the same about 190 the other sensors look fine but when you drive this it starts loosing power the o2 goes toward 0 as it slo...
April 07, 2009
2003 Chevrolet Trailblazer North Face 4.2L Misfire, MIL Lamp on VIN: 1GNDT13S63
P0301: Cylinder 1 Misfire Detected. Hi folks,I've got this low mileage 4.2 straight six with an intermittemt misfire on #1 only. Found a bulletin about water intrusion, and sure enough #1 was full of water,so I replaced coil and plug, and installed new cowl seal to redirect water runff. A week l...
April 09, 2009
1999 Kia Sportage 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: KNDJB723XX
P0301: Cylinder 1 Misfire Detected. We have confirmed compression good on all cyl. Good spark at each plug. Each injector pulse test ok. We noticed #1 inj. on the noid light is dim at idle, but brightens up when you speed up engine. We have checked the voltage on the supply wire(green) and it st...
April 09, 2009
2003 Cadillac CTS 3.2L Misfire, MIL Lamp on VIN: 1G6DM57N93
P0301: Cylinder 1 Misfire Detected. Vehicle came to shop misfire always customer states accessary drive (serpintine) belt broke engine overheated. Customer replaced belt and brought to shop. I retrieved codes pulled plugs from right bank and checked compression results 125 - 130psi. There is onl...
April 15, 2009
1998 Mazda B4000 SE 4.0L Poor Idle Quality, Misfire VIN: 4F4YR16X6W
P0301: Cylinder 1 Misfire Detected. Thanks in advance. I have a 1998 Mazda B4000 with an intermittent miss causing rough idle and more consistant at 45-50mph. Watching Modis, B1 long term at -10% and before o2 sensor change, [...] term was at -23%. Mode 6 shows misfires on 1,2&3 at different...
April 16, 2009
2002 Mercedes-Benz CL600 5.8L Misfire VIN: WDBPJ78J02
P0301: cyl 1 missfire. PERFORMED OIL CHANGE ON THIS VEHICLE A FEW DAYS AGO. CUSTOMER RETURNED WITH OIL LEAKING FROM OIL FILLER CAP. IF THE OIL FILLER CAP IS TURNED SLIGHTLY PAST THE LOCKING POSITION, IT WILL COCK THE SEAL AND CAUSE OIL TO LEAK OUT UNDER ACCELERATION. CLEANED AREA O...
April 20, 2009
2002 Ford Explorer XLS 4.0L Excessive Emissions, Misfire, MIL Lamp on VIN: 1FMZU72K42
P0301: cylinder 1 misfire detected. looking for some help guys, we have this 2002 explorer that at an idle seems to run pretty smooth but as soon as you put it into drive it starts misfiring and surging. if you take it up off of idle and drive it, it runs great. we cleaned the mass airflow senso...
April 22, 2009
2002 Toyota Highlander 3.0L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JTEHF21A82
P0301: Cylinder 1 Misfire Detected. ... owner complained of intermittent missfire, never happenned when i test drove. two weeks ago missfire was constant under any load, checked codes p0300, p0301 random missfire and number one missfire. replaced spark plugs, coil over plug and number one hard t...
April 26, 2009
2005 Hummer H2 6.0L MIL Lamp on VIN: 5GRGN23U75
P0301: miss fire cyl 1. this limo runs great just the check eng lamp blinks under a load , was running bad did tune up , check fuel pressure and replace injecter on 1 cylinder only the truck runs great and only does this once in a while under a load like when it has 20 people in it o...
April 27, 2009
2000 Acura TL 3.2L Stall, Misfire VIN: 19UUA5663Y
P0301: Cylinder 1 Misfire Detected. Help Acura Techs! This TL has got us chasing our tails. The vehicle will start and run well cold but if left sitting and idling once it is hot it will stumble very slightly on the first throttle application. Once shut off and restarted hot (15+ minutes) it wil...
April 30, 2009
2002 Honda Accord EX 3.0L Misfire, MIL Lamp on VIN: 1HGCG16592
P0301: Cylinder 1 Misfire Detected. car came in with CEL flashing / misfire codes. Happened to cust. suddenly after refueling. This is a 1st time customer. Misfire codes for 1,2 & 4. Fuel pres. good. No intake leaks. Checked front bank plugs / swapped around plugs and coils to see if misfire...
April 02, 2009
2005 Chrysler PT Cruiser Touring 2.4L Misfire, MIL Lamp on VIN: 3C4FY58B55
P0301: Cylinder 1 Misfire Detected. ... help on this one. A 2005 PT Cruiser came in for mil light on and skipping. Found P0301 code stored (misfire #1). Check ignition system perform maintenance tune up.Plugs,wires and filters.Customer took vehicle,light came back on with same symptoms.Sent vehi...
April 07, 2009
1997 Kia Sportage 2.0L Poor Idle Quality, MIL Lamp on VIN: KNDJA7232V
P0301: Cylinder 1 Misfire Detected. Hi group, this Kia starts up good but starts to run rough sometimes the computer goes in and out of closed loop the coolant temp stays the same about 190 the other sensors look fine but when you drive this it starts loosing power the o2 goes toward 0 as it slo...
April 07, 2009
2003 Chevrolet Trailblazer North Face 4.2L Misfire, MIL Lamp on VIN: 1GNDT13S63
P0301: Cylinder 1 Misfire Detected. Hi folks,I've got this low mileage 4.2 straight six with an intermittemt misfire on #1 only. Found a bulletin about water intrusion, and sure enough #1 was full of water,so I replaced coil and plug, and installed new cowl seal to redirect water runff. A week l...
April 09, 2009
1999 Kia Sportage 2.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: KNDJB723XX
P0301: Cylinder 1 Misfire Detected. We have confirmed compression good on all cyl. Good spark at each plug. Each injector pulse test ok. We noticed #1 inj. on the noid light is dim at idle, but brightens up when you speed up engine. We have checked the voltage on the supply wire(green) and it st...
April 09, 2009
2003 Cadillac CTS 3.2L Misfire, MIL Lamp on VIN: 1G6DM57N93
P0301: Cylinder 1 Misfire Detected. Vehicle came to shop misfire always customer states accessary drive (serpintine) belt broke engine overheated. Customer replaced belt and brought to shop. I retrieved codes pulled plugs from right bank and checked compression results 125 - 130psi. There is onl...
April 15, 2009
1998 Mazda B4000 SE 4.0L Poor Idle Quality, Misfire VIN: 4F4YR16X6W
P0301: Cylinder 1 Misfire Detected. Thanks in advance. I have a 1998 Mazda B4000 with an intermittent miss causing rough idle and more consistant at 45-50mph. Watching Modis, B1 long term at -10% and before o2 sensor change, [...] term was at -23%. Mode 6 shows misfires on 1,2&3 at different...
April 16, 2009
2002 Mercedes-Benz CL600 5.8L Misfire VIN: WDBPJ78J02
P0301: cyl 1 missfire. PERFORMED OIL CHANGE ON THIS VEHICLE A FEW DAYS AGO. CUSTOMER RETURNED WITH OIL LEAKING FROM OIL FILLER CAP. IF THE OIL FILLER CAP IS TURNED SLIGHTLY PAST THE LOCKING POSITION, IT WILL COCK THE SEAL AND CAUSE OIL TO LEAK OUT UNDER ACCELERATION. CLEANED AREA O...
April 20, 2009
2002 Ford Explorer XLS 4.0L Excessive Emissions, Misfire, MIL Lamp on VIN: 1FMZU72K42
P0301: cylinder 1 misfire detected. looking for some help guys, we have this 2002 explorer that at an idle seems to run pretty smooth but as soon as you put it into drive it starts misfiring and surging. if you take it up off of idle and drive it, it runs great. we cleaned the mass airflow senso...
April 22, 2009
2002 Toyota Highlander 3.0L Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: JTEHF21A82
P0301: Cylinder 1 Misfire Detected. ... owner complained of intermittent missfire, never happenned when i test drove. two weeks ago missfire was constant under any load, checked codes p0300, p0301 random missfire and number one missfire. replaced spark plugs, coil over plug and number one hard t...
April 26, 2009
2005 Hummer H2 6.0L MIL Lamp on VIN: 5GRGN23U75
P0301: miss fire cyl 1. this limo runs great just the check eng lamp blinks under a load , was running bad did tune up , check fuel pressure and replace injecter on 1 cylinder only the truck runs great and only does this once in a while under a load like when it has 20 people in it o...
April 27, 2009
2000 Acura TL 3.2L Stall, Misfire VIN: 19UUA5663Y
P0301: Cylinder 1 Misfire Detected. Help Acura Techs! This TL has got us chasing our tails. The vehicle will start and run well cold but if left sitting and idling once it is hot it will stumble very slightly on the first throttle application. Once shut off and restarted hot (15+ minutes) it wil...
April 30, 2009