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P0301 Diagnostic Trouble Code Discussion for December 2008

Cylinder 1 Misfire Detected


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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
2001 Volkswagen Passat GLS 1.8L Misfire, MIL Lamp on VIN: WVWPD63BX1
P0301: misfire cylinder 1. First time customer came in with misfire cylinder #1 found bad coil . swapped coil and misfire followed, so we replaced coil and cleared code. a few days later he came back with the same code, but was unable to duplicate the problem, checked data and found MAF...
December 01, 2008
1999 BMW 323i 2.5L Misfire, MIL Lamp on VIN: WBAAM3335X
P0301: 1 misfire. This car came to us with a complaint of running rough and loss of power. Due to the mileage we recommended a fuel injection service (throttle body cleaning, pressurized injector cleaning, tank additive and IV drip), spark plugs, and of all things, four O2 sens...
December 04, 2008
2001 Ford Escape XLT 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMCU04101
P0301: Cylinder 1 misfire. Hi guys, Thanks for this "look see" at my problem. This car has the following odd symptoms. Engine idling: open loop, #1 misfire. After accelorating: different speeds, misfire dissappears when closed loop is achieved(about). After stopping, misfire re...
December 04, 2008
2003 Ford Expedition Eddie Bauer 4.6L Excessive Emissions, Misfire, MIL Lamp on VIN: 1FMRU17W13
Well, got this expedition in couple days ago. All the codes listed above were present. Engine skipping, low power. Scan PID's showed Bank 1 running very rich- LTFT- -25%, Bank 2 running lean- LTFT- +15% to +25%. Vacuum gauge shows a steady 18in. Fuel pressure ...
December 05, 2008
1996 Dodge Dakota 3.9L MIL Lamp on VIN: 1B7GL23X1T
P0301: Cylinder 1 Misfire Detected. Hi folks, Customer has no complaint about engine performance. The MIL won't stay off. After clearing codes the MIL will come on after a day or so, setting codes PO300 Thru PO306. I noticed fuel pressure on the low side, so I replaced the fuel pump assembly w...
December 10, 2008
2000 Lexus ES300 3.0L Surge, Misfire VIN: JT8BF28G11
P0301: Cylinder 1 Misfire Detected. Afternoon Tech's . I have this 2000 lexus ES300 that has low power. Checked Code's,noticed that the misfire code's are on the same bank as the 02 sensor code's. lab scope ignition no problem found on ign system. Test a/f sensor found a.f sensor on b1 stuck a t...
December 12, 2008
2000 Volkswagen Jetta GL 2.0L Cuts out, Misfire, MIL Lamp on VIN: 3VWRC29MXY
Ok I have a 2000 Jetta with a 2.0 AEG motor and a 5 speed. Cust complaint is of a mil light on and sometimes flashing. Codes revealed misfire on all cylinders. Further investigation shows new plugs,wires, coil, maf and all are OE VW parts. Test drive the car a...
December 12, 2008
2000 Volkswagen Jetta GL 2.0L Cuts out, Misfire, MIL Lamp on VIN: 3VWRC29MXY
Ok I have a 2000 Jetta with a 2.0 AEG motor and a 5 speed. Cust complaint is of a mil light on and sometimes flashing. Codes revealed misfire on all cylinders. Further investigation shows new plugs,wires, coil, maf and all are OE VW parts. Test drive the car a...
December 13, 2008
2000 Lexus ES300 3.0L Surge, Misfire VIN: JT8BF28G11
P0301: Cylinder 1 Misfire Detected. Afternoon Tech's . I have this 2000 lexus ES300 that has low power. Checked Code's,noticed that the misfire code's are on the same bank as the 02 sensor code's. lab scope ignition no problem found on ign system. Test a/f sensor found a.f sensor on b1 stuck a t...
December 14, 2008
2000 Audi S4 2.7L Misfire VIN: WAUDD68D4Y
P0301: miss 1. hi again here i am beating my head against a wall for other peoples gain again, this audi came in running poorly, underheating, check engine light on, towed in, code interrogation found codes in repair history check with smoke machine found vacuum leaks at pcv...
December 15, 2008
2000 Audi S4 2.7L Misfire VIN: WAUDD68D4Y
P0301: miss 1. hi again here i am beating my head against a wall for other peoples gain again, this audi came in running poorly, underheating, check engine light on, towed in, code interrogation found codes in repair history check with smoke machine found vacuum leaks at pcv...
December 17, 2008
2005 Honda Accord EX 3.0L Misfire VIN: 1HGCM6675A
P0301: Cylinder 1 Misfire Detected. This one has me stumped. I only have missfires on 1 and 5 and only at 6000 rpm or above that set the light. I do get some very light missfires on these holes under moderate acceloration but less the 30 when they occur. I have changed two plugs, swapped coils, ...
December 24, 2008
2001 Volkswagen Beetle GLX 1.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 3VWDD21C71
... here, just looking for some confirmation from some of the Euro-car guys. This Beetle came in with a customer complaint of rough idle. Had a pending p0171 code which became a hard code on the test drive. Found that big y-shaped vacuum tube on the back of th...
December 24, 2008