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P0301 Diagnostic Trouble Code Discussion for March 2007

Cylinder 1 Misfire Detected


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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2001 Hyundai XG300 3.0L Poor Idle Quality, MIL Lamp on VIN: KMHFU42F01
P0301: Cylinder 1 Misfire Detected. hello all after we replaced timing belt 3 days later came back with check engine light on misfire code and other code .felt misfire at idle do you think possible bent valve cyl1,3,5 for one side cylinder head some one out there can help me with this problem th...
March 03, 2007
2002 Jaguar Vanden Plas 4.0L Poor Idle Quality, Misfire VIN: SAJDA24C82
P0301: miss fire cyl 1. HELLO GROUP: I need some help on this car, no matter what i do, it keeps on miss firing. Before injector flush it was showing miss fire cyl 1 2 and 4, now cyl 7 and 8. I've checked crank angle sensor wave form , it looked good. Inspected flywheel for warpage a...
March 05, 2007
2005 Volvo xc70 2.5L Excessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: YVASZ59295
P0301: 1 misfire. Hi folks- thought I'd run this one by you guys before I got in too deep. Car left him on the side of the road and was towed in. It started for me but is misfiring badly and running really rich. Exhaust will burn your eyes. Has a PO261 for #1 injector circuit ...
March 05, 2007
2000 Jeep Cherokee Sport 4.0L Poor Idle Quality, f trim / O2 heater VIN: 1J4FF48S4Y
P0301: Cylinder 1 Misfire Detected. NO CODES CURRENTLY PENDING OR PRESENT!!! Engine is smooth & easy starting. Undermaintained & abused by hi mileage owner. "Tune" 6 components consisted of spark plugs / filters(not fuel filter however)& ignition coil ass'y being a 1 piece co...
March 07, 2007
2002 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZWIT61L42
P0301: misfire on cylinder one. This vehicle came in with a rough running problem with the check engine light flashing. Scanner displayed misfire on cyl # 1,2 and 3 bank only. Bank one shows lean, pulse width 2.3 and bank 2 shows pulse width 4.2.I've checked the cat conv, replaced the upper ...
March 07, 2007
2002 Nissan Altima 2.5L Misfire VIN: 1N4AL11D12
P0301: Cylinder 1 Misfire Detected. ... things! About a week ago this car came in the shop with the check engine light on, and the customer complaining about a rough idle. Code P0301 had set, and examination of the spark plug in that cylinder, revealed a ground electrode, that had been pushed in...
March 08, 2007
2004 Honda S2000 2.2L MIL Lamp on VIN: JHMAP21464
P0301: Cylinder 1 Misfire Detected. ... missfire 1 and 4, and also random missfire, clear code. second time check engine light on with missfire #4 and factory code p1399 for igntion missfire. I usually run in to acura and honda with valve adjustment that is off and cause this, but at this time i...
March 09, 2007
2002 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZWIT61L42
P0301: misfire on cylinder one. This vehicle came in with a rough running problem with the check engine light flashing. Scanner displayed misfire on cyl # 1,2 and 3 bank only. Bank one shows lean, pulse width 2.3 and bank 2 shows pulse width 4.2.I've checked the cat conv, replaced the upper ...
March 09, 2007
1997 Toyota 4Runner SR5 3.4L Excessive Emissions, Misfire, Poor Fuel Economy VIN: JT3GN86R8V
P0301: Cylinder 1 Misfire Detected. hello Toyota techs,have this 4runner,came in for check engine lite on,failed emission test,was misfiring pretty bad,I dont know how the readings on the emissions test could come out so good but...noticed that #2 cylinder was failing cylinder balance test...pul...
March 10, 2007
1999 Mercedes-Benz ML320 3.2L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 4JGAB54E4X
P0301: cyl. 1 misfire. Vehicle stalls out at above 1/2 throttle with excessive missfires. Fuel pressure is good. Spark plugs are new. All coils operational. Vehicle idles good. Tested new maf sensor, no change. Checked voltage out puts from throttle actuator to ecm. Found from pin 7...
March 12, 2007
1999 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZYFT61L2X
P0301: missfire. missfire codes returning can not get monitors to run
March 14, 2007
1999 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZYFT61L2X
P0301: missfire. missfire codes returning can not get monitors to run
March 16, 2007
2001 Volkswagen Passat GLS 1.8L Hesitation, Misfire VIN: WWWPD63B01
car came in with lean and misfire codes. idle quality was very good. repaired large vacuum leak, now car has extreme lack of power/hesitation.installed new maf, no difference.tried relearn, no difference.checked exhaust back pressure, passed. when test driving...
March 17, 2007
2002 Toyota Tundra 3.4L MIL Lamp on VIN: 5TBJN32172
P0301: Cylinder 1 Misfire Detected. ... two codes about every three weeks(p0300,p0301).The truck apears to run well and the owner said it never misses a beat.The only thing i have noticed is that on decel from about 2500rpm to idle the engine seems to run rough.Fuel trim # are good and the air f...
March 18, 2007
2002 Dodge Grand Caravan SE 3.3L MIL Lamp on VIN: 1B4GP24312
P0301: Cylinder 1 Misfire Detected. ... Got a caravan thats setting a p0301 code. When we first worked on a month ago this van WAS missing. Dealer had replaced plugs and wires. We found plugs gapped incorrectly, but that didn't fix. On test drive, after cruise, coming to a stop, it would misfire...
March 19, 2007
2003 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GL48K53
P0301: Cylinder 1 Misfire Detected. hey everyone i need help on a ignition problem in a jeep liberty 3.7.as you can see in the repair history we repaired some things and then #3 cylinder was missfiring and removed coil to find burnt(coil is swelled and looks like it was blown apart), also found ...
March 22, 2007
2004 Nissan Sentra 1.8L Surge, Misfire, MIL Lamp on, extended crank VIN: 3N1CB51D54
P0301: Cylinder 1 Misfire Detected. Vehicle came in with check engine light on and misfire. we scanned with snap on and came up with po301 cylinder 1 misfire. Replaced coil, saw some marks on it. Vehicle initially test drove ok. Let sit overnight. Upon start up vehicle has extended crank and stu...
March 22, 2007
1999 Volkswagen Beetle GLS 2.0L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 3VWCC21C4X
P0301: cyl. 1 misfire. This Beetle starts and idles fine but stumbles when the throttle is pushed. It revs smooth if you push the throttle slowly. At full throttle no load the engine leans out chokes then starts to surge. Classic MAF problem but the new MAF nor a known good one off ...
March 22, 2007
2003 Acura CL Type-S 3.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 19UYA41603
P0301: Cylinder 1 Misfire Detected. vehicle has misfire at idle only varies slight to signifigant. fuel trim adjusting for rich condition short and long term.misfire codes come and go fuel trim adjust constant.
March 26, 2007
2002 Dodge Grand Caravan SE 3.3L MIL Lamp on VIN: 1B4GP24312
P0301: Cylinder 1 Misfire Detected. ... Got a caravan thats setting a p0301 code. When we first worked on a month ago this van WAS missing. Dealer had replaced plugs and wires. We found plugs gapped incorrectly, but that didn't fix. On test drive, after cruise, coming to a stop, it would misfire...
March 26, 2007
2001 Land Rover Discovery Series II SD 4.0L Misfire, MIL Lamp on VIN: SALTLI5451
P0301: misfire 1 cylinder. This vehicle has me scratching my head due to the lack of information available to me, both scanner wise and repair info. MIL will flash when under load , comp good, plug is good, wire is not leaking, and no other codes are present other than the lean codes. O...
March 28, 2007
2001 Land Rover Discovery Series II SD 4.0L Misfire, MIL Lamp on VIN: SALTLI5451
P0301: misfire 1 cylinder. This vehicle has me scratching my head due to the lack of information available to me, both scanner wise and repair info. MIL will flash when under load , comp good, plug is good, wire is not leaking, and no other codes are present other than the lean codes. O...
March 29, 2007
1996 Nissan Altima GLE 2.4L Misfire VIN: 1N4BU31D8T
P0301: Cylinder 1 Misfire Detected. hello friends, have a tough one. engine misfires under load at 1500 to 1700 rpm after engine warmed. vehicle has been to other repair shops and dealer, has new facory ignition wires, cap, rotor and spark plugs. road tested verified fault. felt like ignition mi...
March 30, 2007
2001 Hyundai XG300 3.0L Poor Idle Quality, MIL Lamp on VIN: KMHFU42F01
P0301: Cylinder 1 Misfire Detected. hello all after we replaced timing belt 3 days later came back with check engine light on misfire code and other code .felt misfire at idle do you think possible bent valve cyl1,3,5 for one side cylinder head some one out there can help me with this problem th...
March 03, 2007
2002 Jaguar Vanden Plas 4.0L Poor Idle Quality, Misfire VIN: SAJDA24C82
P0301: miss fire cyl 1. HELLO GROUP: I need some help on this car, no matter what i do, it keeps on miss firing. Before injector flush it was showing miss fire cyl 1 2 and 4, now cyl 7 and 8. I've checked crank angle sensor wave form , it looked good. Inspected flywheel for warpage a...
March 05, 2007
2005 Volvo xc70 2.5L Excessive Emissions, Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: YVASZ59295
P0301: 1 misfire. Hi folks- thought I'd run this one by you guys before I got in too deep. Car left him on the side of the road and was towed in. It started for me but is misfiring badly and running really rich. Exhaust will burn your eyes. Has a PO261 for #1 injector circuit ...
March 05, 2007
2000 Jeep Cherokee Sport 4.0L Poor Idle Quality, f trim / O2 heater VIN: 1J4FF48S4Y
P0301: Cylinder 1 Misfire Detected. NO CODES CURRENTLY PENDING OR PRESENT!!! Engine is smooth & easy starting. Undermaintained & abused by hi mileage owner. "Tune" 6 components consisted of spark plugs / filters(not fuel filter however)& ignition coil ass'y being a 1 piece co...
March 07, 2007
2002 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZWIT61L42
P0301: misfire on cylinder one. This vehicle came in with a rough running problem with the check engine light flashing. Scanner displayed misfire on cyl # 1,2 and 3 bank only. Bank one shows lean, pulse width 2.3 and bank 2 shows pulse width 4.2.I've checked the cat conv, replaced the upper ...
March 07, 2007
2002 Nissan Altima 2.5L Misfire VIN: 1N4AL11D12
P0301: Cylinder 1 Misfire Detected. ... things! About a week ago this car came in the shop with the check engine light on, and the customer complaining about a rough idle. Code P0301 had set, and examination of the spark plug in that cylinder, revealed a ground electrode, that had been pushed in...
March 08, 2007
2004 Honda S2000 2.2L MIL Lamp on VIN: JHMAP21464
P0301: Cylinder 1 Misfire Detected. ... missfire 1 and 4, and also random missfire, clear code. second time check engine light on with missfire #4 and factory code p1399 for igntion missfire. I usually run in to acura and honda with valve adjustment that is off and cause this, but at this time i...
March 09, 2007
2002 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZWIT61L42
P0301: misfire on cylinder one. This vehicle came in with a rough running problem with the check engine light flashing. Scanner displayed misfire on cyl # 1,2 and 3 bank only. Bank one shows lean, pulse width 2.3 and bank 2 shows pulse width 4.2.I've checked the cat conv, replaced the upper ...
March 09, 2007
1997 Toyota 4Runner SR5 3.4L Excessive Emissions, Misfire, Poor Fuel Economy VIN: JT3GN86R8V
P0301: Cylinder 1 Misfire Detected. hello Toyota techs,have this 4runner,came in for check engine lite on,failed emission test,was misfiring pretty bad,I dont know how the readings on the emissions test could come out so good but...noticed that #2 cylinder was failing cylinder balance test...pul...
March 10, 2007
1999 Mercedes-Benz ML320 3.2L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 4JGAB54E4X
P0301: cyl. 1 misfire. Vehicle stalls out at above 1/2 throttle with excessive missfires. Fuel pressure is good. Spark plugs are new. All coils operational. Vehicle idles good. Tested new maf sensor, no change. Checked voltage out puts from throttle actuator to ecm. Found from pin 7...
March 12, 2007
1999 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZYFT61L2X
P0301: missfire. missfire codes returning can not get monitors to run
March 14, 2007
1999 Mercury Cougar 2.5L Misfire, MIL Lamp on VIN: 1ZYFT61L2X
P0301: missfire. missfire codes returning can not get monitors to run
March 16, 2007
2001 Volkswagen Passat GLS 1.8L Hesitation, Misfire VIN: WWWPD63B01
car came in with lean and misfire codes. idle quality was very good. repaired large vacuum leak, now car has extreme lack of power/hesitation.installed new maf, no difference.tried relearn, no difference.checked exhaust back pressure, passed. when test driving...
March 17, 2007
2002 Toyota Tundra 3.4L MIL Lamp on VIN: 5TBJN32172
P0301: Cylinder 1 Misfire Detected. ... two codes about every three weeks(p0300,p0301).The truck apears to run well and the owner said it never misses a beat.The only thing i have noticed is that on decel from about 2500rpm to idle the engine seems to run rough.Fuel trim # are good and the air f...
March 18, 2007
2002 Dodge Grand Caravan SE 3.3L MIL Lamp on VIN: 1B4GP24312
P0301: Cylinder 1 Misfire Detected. ... Got a caravan thats setting a p0301 code. When we first worked on a month ago this van WAS missing. Dealer had replaced plugs and wires. We found plugs gapped incorrectly, but that didn't fix. On test drive, after cruise, coming to a stop, it would misfire...
March 19, 2007
2003 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GL48K53
P0301: Cylinder 1 Misfire Detected. hey everyone i need help on a ignition problem in a jeep liberty 3.7.as you can see in the repair history we repaired some things and then #3 cylinder was missfiring and removed coil to find burnt(coil is swelled and looks like it was blown apart), also found ...
March 22, 2007
2004 Nissan Sentra 1.8L Surge, Misfire, MIL Lamp on, extended crank VIN: 3N1CB51D54
P0301: Cylinder 1 Misfire Detected. Vehicle came in with check engine light on and misfire. we scanned with snap on and came up with po301 cylinder 1 misfire. Replaced coil, saw some marks on it. Vehicle initially test drove ok. Let sit overnight. Upon start up vehicle has extended crank and stu...
March 22, 2007
1999 Volkswagen Beetle GLS 2.0L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 3VWCC21C4X
P0301: cyl. 1 misfire. This Beetle starts and idles fine but stumbles when the throttle is pushed. It revs smooth if you push the throttle slowly. At full throttle no load the engine leans out chokes then starts to surge. Classic MAF problem but the new MAF nor a known good one off ...
March 22, 2007
2003 Acura CL Type-S 3.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 19UYA41603
P0301: Cylinder 1 Misfire Detected. vehicle has misfire at idle only varies slight to signifigant. fuel trim adjusting for rich condition short and long term.misfire codes come and go fuel trim adjust constant.
March 26, 2007
2002 Dodge Grand Caravan SE 3.3L MIL Lamp on VIN: 1B4GP24312
P0301: Cylinder 1 Misfire Detected. ... Got a caravan thats setting a p0301 code. When we first worked on a month ago this van WAS missing. Dealer had replaced plugs and wires. We found plugs gapped incorrectly, but that didn't fix. On test drive, after cruise, coming to a stop, it would misfire...
March 26, 2007
2001 Land Rover Discovery Series II SD 4.0L Misfire, MIL Lamp on VIN: SALTLI5451
P0301: misfire 1 cylinder. This vehicle has me scratching my head due to the lack of information available to me, both scanner wise and repair info. MIL will flash when under load , comp good, plug is good, wire is not leaking, and no other codes are present other than the lean codes. O...
March 28, 2007
2001 Land Rover Discovery Series II SD 4.0L Misfire, MIL Lamp on VIN: SALTLI5451
P0301: misfire 1 cylinder. This vehicle has me scratching my head due to the lack of information available to me, both scanner wise and repair info. MIL will flash when under load , comp good, plug is good, wire is not leaking, and no other codes are present other than the lean codes. O...
March 29, 2007
1996 Nissan Altima GLE 2.4L Misfire VIN: 1N4BU31D8T
P0301: Cylinder 1 Misfire Detected. hello friends, have a tough one. engine misfires under load at 1500 to 1700 rpm after engine warmed. vehicle has been to other repair shops and dealer, has new facory ignition wires, cap, rotor and spark plugs. road tested verified fault. felt like ignition mi...
March 30, 2007