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P0301 Diagnostic Trouble Code Discussion for August 2007

Cylinder 1 Misfire Detected


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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2001 Acura MDX 3.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2HNYD18212
P0301: Cylinder 1 Misfire Detected. Vehicle came into shop running on about 3 cylinders. We had tested all of ignition and fuel pressure. All codes listed about existed. Pulled and cleaned all egr ports in upper plenum. Vehicle does run a little better. Now have code p1399=Any cylinder misfiring...
August 02, 2007
2000 Ford Escort ZX2 2.0L Misfire, MIL Lamp on VIN: 3FAKP1138Y
P0301: Misfire detected cylinder 1. This car came in for a tuneup. He had driven it for about an hour and it was bucking/jerking on acceleration, but not like a single cylinder misfire. I took him home while this was happening, but the next day when we had time to work on it, it was running go...
August 10, 2007
2003 Audi A4 1.8L MIL Lamp on VIN: WAUJC68E63
P0301: misfire cyl. 1. This Audi came in with the above codes. Thought maybe the low voltage code may be a sign of what caused the misfire codes, so checked power at term#3 of control moduel, and grounds at Terms# 1$2. All check ok, grounds are clean and tight under the abs pump. Al...
August 13, 2007
1999 Ford Ranger XL 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR14V4X
P0301: Misfire 1 Cylinder. Car came in with misfire code set for #2 cylinder. #2 injector was not firing at all but it was being pulsed by the computer. We replaced #2 injector and engine did run better but still had a shakey idle. Checked ignition to all cylinders with scope and all ar...
August 16, 2007
1998 Ford Windstar GL 3.8L Hesitation, Misfire, MIL Lamp on VIN: 2FMDA5145W
P0301: cylinder 1 misfire. ... codes runs rough.P0301 number 1 misfire and P1512 Intake runner. Follow all data test everything is working fine mechanically. They open close when supposed to clips aren't missing, nothing is binding. On scan tool data though bank 2 is at 3.5v and bank 1 ...
August 20, 2007
1996 Volvo 850 GLT 2.4L Poor Idle Quality, Misfire VIN: YV1LW5548T
P0301: misfire cyl1. This vehicle is missing on 2 cylinders. The fuel pressure is 45 psi at idle, and when I disconnect the fuel pressure regulator there is no change in fuel pressure, the regulator is in between #1 & #2 cylinder (so have I answered my own question?). Compress...
August 22, 2007
1996 Volvo 850 GLT 2.4L Poor Idle Quality, Misfire VIN: YV1LW5548T
P0301: misfire cyl1. This vehicle is missing on 2 cylinders. The fuel pressure is 45 psi at idle, and when I disconnect the fuel pressure regulator there is no change in fuel pressure, the regulator is in between #1 & #2 cylinder (so have I answered my own question?). Compress...
August 23, 2007
1999 Dodge Avenger 2.5L Misfire VIN: 4B3AU42N7X
P0301: Cylinder 1 Misfire Detected. this avenger has a missfire on cold start only. After you drive for 5 min misfire goes away. It is more prevelant at idle and slight throttle under full throttle it goes away.
August 25, 2007
1999 Dodge Avenger 2.5L Misfire VIN: 4B3AU42N7X
P0301: Cylinder 1 Misfire Detected. this avenger has a missfire on cold start only. After you drive for 5 min misfire goes away. It is more prevelant at idle and slight throttle under full throttle it goes away.
August 27, 2007
1996 GMC Sonoma SLE 2.2L Misfire VIN: 1GTCS194XT
P0301: Cylinder 1 Misfire Detected. Vehicle has a misfire on #1 cylinder all the time. Checked spark, good, checked fuel pressure, good. Engine vacuum is low, 17.5"hg at idle, 19.5"hg at 2000 rpm. Swapped wires, coils & plugs, miss still on #1. Swapped fuel injector, miss still on ...
August 28, 2007
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality, Misfire, MIL Lamp on, POOR OFF IDLE VIN: 3VWRC29M5X
P0301: miss cyl 1. Ok VW Techs I could really use your help on this one! It is really throwing me for a loop. After working on Audis the last 15 years i have been working on VWs the last 4 months. I am amazed how different they can be. Anyway, when you start the car it idles fin...
August 30, 2007
1998 Volvo S70 2.4L MIL Lamp on VIN: YV1LS576W1
P0301: cyl 1 misfire. This car will set misfire codes intermittantly, no driveability concerns. Freeze frame showed STFT -7.8% LTFT 3.9%. Have performed smoke test for intake leaks, car has plenty of power and runs very smooth. Last time car was in for check engine light it had the...
August 30, 2007
2001 Acura MDX 3.5L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 2HNYD18212
P0301: Cylinder 1 Misfire Detected. Vehicle came into shop running on about 3 cylinders. We had tested all of ignition and fuel pressure. All codes listed about existed. Pulled and cleaned all egr ports in upper plenum. Vehicle does run a little better. Now have code p1399=Any cylinder misfiring...
August 02, 2007
2000 Ford Escort ZX2 2.0L Misfire, MIL Lamp on VIN: 3FAKP1138Y
P0301: Misfire detected cylinder 1. This car came in for a tuneup. He had driven it for about an hour and it was bucking/jerking on acceleration, but not like a single cylinder misfire. I took him home while this was happening, but the next day when we had time to work on it, it was running go...
August 10, 2007
2003 Audi A4 1.8L MIL Lamp on VIN: WAUJC68E63
P0301: misfire cyl. 1. This Audi came in with the above codes. Thought maybe the low voltage code may be a sign of what caused the misfire codes, so checked power at term#3 of control moduel, and grounds at Terms# 1$2. All check ok, grounds are clean and tight under the abs pump. Al...
August 13, 2007
1999 Ford Ranger XL 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR14V4X
P0301: Misfire 1 Cylinder. Car came in with misfire code set for #2 cylinder. #2 injector was not firing at all but it was being pulsed by the computer. We replaced #2 injector and engine did run better but still had a shakey idle. Checked ignition to all cylinders with scope and all ar...
August 16, 2007
1998 Ford Windstar GL 3.8L Hesitation, Misfire, MIL Lamp on VIN: 2FMDA5145W
P0301: cylinder 1 misfire. ... codes runs rough.P0301 number 1 misfire and P1512 Intake runner. Follow all data test everything is working fine mechanically. They open close when supposed to clips aren't missing, nothing is binding. On scan tool data though bank 2 is at 3.5v and bank 1 ...
August 20, 2007
1996 Volvo 850 GLT 2.4L Poor Idle Quality, Misfire VIN: YV1LW5548T
P0301: misfire cyl1. This vehicle is missing on 2 cylinders. The fuel pressure is 45 psi at idle, and when I disconnect the fuel pressure regulator there is no change in fuel pressure, the regulator is in between #1 & #2 cylinder (so have I answered my own question?). Compress...
August 22, 2007
1996 Volvo 850 GLT 2.4L Poor Idle Quality, Misfire VIN: YV1LW5548T
P0301: misfire cyl1. This vehicle is missing on 2 cylinders. The fuel pressure is 45 psi at idle, and when I disconnect the fuel pressure regulator there is no change in fuel pressure, the regulator is in between #1 & #2 cylinder (so have I answered my own question?). Compress...
August 23, 2007
1999 Dodge Avenger 2.5L Misfire VIN: 4B3AU42N7X
P0301: Cylinder 1 Misfire Detected. this avenger has a missfire on cold start only. After you drive for 5 min misfire goes away. It is more prevelant at idle and slight throttle under full throttle it goes away.
August 25, 2007
1999 Dodge Avenger 2.5L Misfire VIN: 4B3AU42N7X
P0301: Cylinder 1 Misfire Detected. this avenger has a missfire on cold start only. After you drive for 5 min misfire goes away. It is more prevelant at idle and slight throttle under full throttle it goes away.
August 27, 2007
1996 GMC Sonoma SLE 2.2L Misfire VIN: 1GTCS194XT
P0301: Cylinder 1 Misfire Detected. Vehicle has a misfire on #1 cylinder all the time. Checked spark, good, checked fuel pressure, good. Engine vacuum is low, 17.5"hg at idle, 19.5"hg at 2000 rpm. Swapped wires, coils & plugs, miss still on #1. Swapped fuel injector, miss still on ...
August 28, 2007
1999 Volkswagen Jetta GL 2.0L Poor Idle Quality, Misfire, MIL Lamp on, POOR OFF IDLE VIN: 3VWRC29M5X
P0301: miss cyl 1. Ok VW Techs I could really use your help on this one! It is really throwing me for a loop. After working on Audis the last 15 years i have been working on VWs the last 4 months. I am amazed how different they can be. Anyway, when you start the car it idles fin...
August 30, 2007
1998 Volvo S70 2.4L MIL Lamp on VIN: YV1LS576W1
P0301: cyl 1 misfire. This car will set misfire codes intermittantly, no driveability concerns. Freeze frame showed STFT -7.8% LTFT 3.9%. Have performed smoke test for intake leaks, car has plenty of power and runs very smooth. Last time car was in for check engine light it had the...
August 30, 2007