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P0300 Diagnostic Trouble Code Discussion for February 2009

Multiple Misfire Detected


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Trouble Ticket Help Requests for DTC P0300
Help Request Posted
2004 Cadillac DeVille 4.6L Misfire VIN: 1G6KD54YX4
P0300: Engine Misfire Detected. Sorry for long post on related repair history but as you can see I am chasing my tail on this one second request for help in 2 years since being with iatn, give me a hand,guys and gals that is the first request the second is ,firing order is confusing to me ,i...
February 02, 2009
1999 BMW 528i 2.8L Surge, Cuts out, MIL Lamp on VIN: WBADP6339X
P0300: Multible misfires. Hey Gang, This is a new one for me. This car sees a lot highway use between Chicago and West Virginia. After driving for some hours on the road the car behaves as if running out of fuel for a period of time. Power is reduced to force 30-35 MPH operation with ...
February 03, 2009
2004 Mercedes-Benz E320 4Matic 3.2L rich on bank 2 VIN: WDBUH82J24
P0300: Random misfire. Thanks for your time. Looking for another idea on this Mercedes. It came to us after it stalled & wouldn't restart in the bitter below 0 cold. Customer replaced iridium plugs and got it to start. Had the O2 & misfire codes in memory. Found the fuel pre...
February 03, 2009
1999 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNDM19W1X
P0300: Multiple Cylinder Misfire Detected. Nagging problem reoccures randomly. Works great each time a cap and rotor are replaced. Symptoms returned anywhere from 2 weeks to 6 months later after cap and rotor replacement. Heavy acceleration has no problem - takes off like a rocket. Light to moderate ac...
February 04, 2009
2001 GMC Yukon XL 2500 SLE 6.0L Misfire, MIL Lamp on VIN: 3GKGK26U81
P0300: Multiple Cylinder Misfire Detected. ... in advance for your help, this truck came for smog inspection to my shop, as soon as r.p.m. increased to 2500, service engine soon light came on, and d.t.c. p0300 sets in ecm, customer took it somewhere else for repairs, so they replaced the fuel pump, fue...
February 04, 2009
2001 GMC Yukon XL 2500 SLE 6.0L Misfire, MIL Lamp on VIN: 3GKGK26U81
P0300: Multiple Cylinder Misfire Detected. ... in advance for your help, this truck came for smog inspection to my shop, as soon as r.p.m. increased to 2500, service engine soon light came on, and d.t.c. p0300 sets in ecm, customer took it somewhere else for repairs, so they replaced the fuel pump, fue...
February 05, 2009
2001 Toyota Celica GT 1.8L Cuts out, Misfire, MIL Lamp on VIN: JTDDR32T21
P0300: Multiple Cylinder Misfire Detected. car come in with the low compress at # 2 cylinder, repalce the used engine. after customer pick up one week later, car come bacek with the a noise engine. replace the engine again. car start has misfires when it cold start. after the car full warm up the misfi...
February 05, 2009
2001 Toyota Celica GT 1.8L Cuts out, Misfire, MIL Lamp on VIN: JTDDR32T21
P0300: Multiple Cylinder Misfire Detected. car come in with the low compress at # 2 cylinder, repalce the used engine. after customer pick up one week later, car come bacek with the a noise engine. replace the engine again. car start has misfires when it cold start. after the car full warm up the misfi...
February 06, 2009
1999 BMW 528i 2.8L Surge, Cuts out, MIL Lamp on VIN: WBADP6339X
P0300: Multible misfires. Hey Gang, This is a new one for me. This car sees a lot highway use between Chicago and West Virginia. After driving for some hours on the road the car behaves as if running out of fuel for a period of time. Power is reduced to force 30-35 MPH operation with ...
February 10, 2009
1999 Buick Park Avenue 3.8L Misfire VIN: 1G4CW52K5X
P0300: Engine Misfire Detected. I would like to thank everyone for their help in advance. I just had this car dropped off running on one leg. The onwer had let someone try to do a tune-up and couldnt do the rear plugs and go the wires crossed up. I finished the tune-up and fixed the wires bu...
February 11, 2009
2003 Chevrolet Silverado 2500 6.0L Misfire, MIL Lamp on VIN: 1GCHC24U93
P0300: Multiple Engine Misfire Detected. thanks to all before hand. truck misfired at 25 to 30 mph mil flashes at 70 to 75 mph. stays on flashing til you get below 70 no hard code store when flashing goes away. check all ecm grounds. now dont know where to go from here. need help
February 11, 2009
2004 Ford F-150 STX 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTRX12W64
P0300: multi miss fire. We got 2004 f-150 with 4.6l engine came in with bad miss fire and MIL on.check the code memory has p171,p300,p354 and p304,p305,p307.Check vacum leak not detected.check exhust system no restriction.fuel pressure 41 psi at idle and 41-42 at high rpm.BAnk to o2 ...
February 11, 2009
2000 Saturn LS2 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1G8JW52R7Y
P0300: Random Misfire Detected. This vehicle is not hitting on cylinders # 2, 4, 6, We did remove the front half of the plenum and checked for fire at the plugs and there is good fire. We removed the front plugs and cleaned them . We cleaned the intake and throttle plate. When we unplug the ...
February 11, 2009
1997 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K9V
P0300: Engine Misfire Detected. fellows i have a buick kicking my --- it misses at high rpm, mostly above 2000. some what on decel although not as badly. if you hit the entrance ramp to the highway and floor it, it will register several hundred misfires on 2&5 within a minute. i have che...
February 12, 2009
2005 Saab 9-3 Linear 2.0L Misfire, MIL Lamp on VIN: YS3FB49SX5
P0300: Radom Missfire. Started with Champion plugs and still had miss and it is usually read 1-5 misses on at least 3 cylinders. It has not reset the check engine light yet but i have not ran it very long just enough to feel the miss and the shut it off to cold soak again. Tried the...
February 12, 2009
2003 Lincoln LS 3.9L Misfire, MIL Lamp on VIN: 1LNHM87A23
P0300: multiple missfire. Hello everyone, please help me with this Lincoln LS has multiple missfire.I fould most of the spark plug hoses were full of oil,so i replace valve cover gasket,spark plugs and 2 coils #4 and #5,then cleared code and test drove.Code PO354 and PO355 came back. I...
February 15, 2009
2000 Dodge Intrepid 2.7L No Start VIN: 2B3HD4CR2Y
P0300: Multiple Cylinder Misfire Detected. car just died and would not restart. i checked spark(has spark) the fuel pump and relay are operating. this car is in a parking lot away from my shop. so i did not take off the plenum yet to check pressure or pulse. can the crank or cam sensors be bad and stil...
February 17, 2009
2002 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 2GTEC19T22
P0300: Multiple Cylinder Misfire Detected. This car came in with a MIL and P0300. The owner said the truck ran fine and had no drivability complaints. A few occasional misfires show up at idle, but not biased toward one cylinder. After looking on the ignition scope, the firing kV was about 10-13V, spar...
February 18, 2009
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 1GCEK19T63
P0300: Multiple Cylinder Misfire Detected. Vehicle came to us running poorly, low power and check engine lamp flashing. normal diagnosis, found the cats broken up and plugged. replaced all 4 oxygen sensors and cat pipe, cleared codes and drive cycled. ran great until next morning. after a hot soak 2-3 ...
February 19, 2009
2000 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCDL19WXY
P0300: Multiple Cylinder Misfire Detected. Hello to all, this is my first time using this so bear with me. i have this astro that keep throwing missfire codes on cylinders 3 and 4. after clearing codes the missfire comes back on cylinder 3 then clear them again and the new code is for cylinder 4 only. ...
February 20, 2009
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 1GCEK19T63
P0300: Multiple Cylinder Misfire Detected. Vehicle came to us running poorly, low power and check engine lamp flashing. normal diagnosis, found the cats broken up and plugged. replaced all 4 oxygen sensors and cat pipe, cleared codes and drive cycled. ran great until next morning. after a hot soak 2-3 ...
February 20, 2009
2003 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GL48K23
P0300: Multiple Misfire Detected. has random and specific cyliner misfire codes miss at idle mostly. installed new spark plugs,carbon clean,fuel pressure good check all coils with spark tester fired good,check for internal vacuum leak passed test,fuel trim both banks at 1%,clear codes comes ba...
February 20, 2009
2002 Chevrolet Silverado 2500 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCHK29U82
P0300: Multiple Cylinder Misfire Detected. The engine runs very rough at idle showing misfires mainly on cylinders 1,3,4,8. After 2000 rpm it smooths out and runs ok. The fuel pressure is ok and the egr is staying closed. It acts like a vacuum leak but we haven't been able to find one. It seems to have...
February 23, 2009
1997 GMC C1500 Sierra SL 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2GTEC19R8V
P0300: Multiple Cylinder Misfire Detected. The truck continues to get P0300 Multiple Random mis-fire code and shows mis-fires on cylinders 1, 3, & 5. Fuel pump has been replaced along with rotor, distributor, plugs, spark plug wires, etc. The intake gaskets were changed on the truck over 5 years ag...
February 23, 2009
2002 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD57YX2
P0300: Engine Misfire Detected. Hello Everyone... MAJOR headache here... Put new Dealer motor in. (Reason)Coolant leaking into cylinders. Runs Great at idle. Go to take off and have check engine light flashing and see misfires on the scanner on Cyl. #1 and #4 only under load. Feel alittle ...
February 24, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0300: misfire detected. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 24, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0300: misfire detected. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 25, 2009
1996 Audi A4 2.8L Misfire, MIL Lamp on VIN: WAUEA88D6T
P0300: random cyl misfire. Vehicle comes in with a check engine light, Retrieved Dtc 302, 304, 300, Cleared codes test drive. During test drive after shifting from 2nd to 3rd and 3rd to 4th you could feel a hesitation or such that it felt like a bad sparkplug or wire. Spark plugs were r...
February 27, 2009
2004 Chevrolet Silverado 1500 5.3L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCEK19T84
P0300: Multiple Cylinder Misfire Detected. have put in many o2 sensers in this truck to fix single bank missfires, seems to favor killing the left bank, 3 rights to 5 lefts. have tried napa and dealer sensors both with repeat failers on this truck. first one we put left bank with the bank 2 failing a f...
February 27, 2009
2002 Volkswagen Passat GLS 1.8L Misfire, MIL Lamp on VIN: WVWPD63B62
P0300: misfire detected. CAME IN FIRST TIME FOR P0304, REPLACED ALL PLUGS AND # 4 COIL. ROAD TESTED AND ALL WAS FINE. CUSTOMER TOOK CAR, NEXT MORNING CAME BACK WITH CYL #3 MISFIRE, REPLACED #3 COIL, ROAD TESTED, ALL GOOD. CAME BACK A FEW DAYS LATER AND HAD CODE FOR#2 CYL MISFIRE, REPL...
February 27, 2009
2004 Cadillac DeVille 4.6L Misfire VIN: 1G6KD54YX4
P0300: Engine Misfire Detected. Sorry for long post on related repair history but as you can see I am chasing my tail on this one second request for help in 2 years since being with iatn, give me a hand,guys and gals that is the first request the second is ,firing order is confusing to me ,i...
February 02, 2009
1999 BMW 528i 2.8L Surge, Cuts out, MIL Lamp on VIN: WBADP6339X
P0300: Multible misfires. Hey Gang, This is a new one for me. This car sees a lot highway use between Chicago and West Virginia. After driving for some hours on the road the car behaves as if running out of fuel for a period of time. Power is reduced to force 30-35 MPH operation with ...
February 03, 2009
2004 Mercedes-Benz E320 4Matic 3.2L rich on bank 2 VIN: WDBUH82J24
P0300: Random misfire. Thanks for your time. Looking for another idea on this Mercedes. It came to us after it stalled & wouldn't restart in the bitter below 0 cold. Customer replaced iridium plugs and got it to start. Had the O2 & misfire codes in memory. Found the fuel pre...
February 03, 2009
1999 Chevrolet Astro 4.3L Misfire, MIL Lamp on VIN: 1GNDM19W1X
P0300: Multiple Cylinder Misfire Detected. Nagging problem reoccures randomly. Works great each time a cap and rotor are replaced. Symptoms returned anywhere from 2 weeks to 6 months later after cap and rotor replacement. Heavy acceleration has no problem - takes off like a rocket. Light to moderate ac...
February 04, 2009
2001 GMC Yukon XL 2500 SLE 6.0L Misfire, MIL Lamp on VIN: 3GKGK26U81
P0300: Multiple Cylinder Misfire Detected. ... in advance for your help, this truck came for smog inspection to my shop, as soon as r.p.m. increased to 2500, service engine soon light came on, and d.t.c. p0300 sets in ecm, customer took it somewhere else for repairs, so they replaced the fuel pump, fue...
February 04, 2009
2001 GMC Yukon XL 2500 SLE 6.0L Misfire, MIL Lamp on VIN: 3GKGK26U81
P0300: Multiple Cylinder Misfire Detected. ... in advance for your help, this truck came for smog inspection to my shop, as soon as r.p.m. increased to 2500, service engine soon light came on, and d.t.c. p0300 sets in ecm, customer took it somewhere else for repairs, so they replaced the fuel pump, fue...
February 05, 2009
2001 Toyota Celica GT 1.8L Cuts out, Misfire, MIL Lamp on VIN: JTDDR32T21
P0300: Multiple Cylinder Misfire Detected. car come in with the low compress at # 2 cylinder, repalce the used engine. after customer pick up one week later, car come bacek with the a noise engine. replace the engine again. car start has misfires when it cold start. after the car full warm up the misfi...
February 05, 2009
2001 Toyota Celica GT 1.8L Cuts out, Misfire, MIL Lamp on VIN: JTDDR32T21
P0300: Multiple Cylinder Misfire Detected. car come in with the low compress at # 2 cylinder, repalce the used engine. after customer pick up one week later, car come bacek with the a noise engine. replace the engine again. car start has misfires when it cold start. after the car full warm up the misfi...
February 06, 2009
1999 BMW 528i 2.8L Surge, Cuts out, MIL Lamp on VIN: WBADP6339X
P0300: Multible misfires. Hey Gang, This is a new one for me. This car sees a lot highway use between Chicago and West Virginia. After driving for some hours on the road the car behaves as if running out of fuel for a period of time. Power is reduced to force 30-35 MPH operation with ...
February 10, 2009
1999 Buick Park Avenue 3.8L Misfire VIN: 1G4CW52K5X
P0300: Engine Misfire Detected. I would like to thank everyone for their help in advance. I just had this car dropped off running on one leg. The onwer had let someone try to do a tune-up and couldnt do the rear plugs and go the wires crossed up. I finished the tune-up and fixed the wires bu...
February 11, 2009
2003 Chevrolet Silverado 2500 6.0L Misfire, MIL Lamp on VIN: 1GCHC24U93
P0300: Multiple Engine Misfire Detected. thanks to all before hand. truck misfired at 25 to 30 mph mil flashes at 70 to 75 mph. stays on flashing til you get below 70 no hard code store when flashing goes away. check all ecm grounds. now dont know where to go from here. need help
February 11, 2009
2004 Ford F-150 STX 4.6L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTRX12W64
P0300: multi miss fire. We got 2004 f-150 with 4.6l engine came in with bad miss fire and MIL on.check the code memory has p171,p300,p354 and p304,p305,p307.Check vacum leak not detected.check exhust system no restriction.fuel pressure 41 psi at idle and 41-42 at high rpm.BAnk to o2 ...
February 11, 2009
2000 Saturn LS2 3.0L Poor Idle Quality, Stall, Misfire, MIL Lamp on VIN: 1G8JW52R7Y
P0300: Random Misfire Detected. This vehicle is not hitting on cylinders # 2, 4, 6, We did remove the front half of the plenum and checked for fire at the plugs and there is good fire. We removed the front plugs and cleaned them . We cleaned the intake and throttle plate. When we unplug the ...
February 11, 2009
1997 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HP52K9V
P0300: Engine Misfire Detected. fellows i have a buick kicking my --- it misses at high rpm, mostly above 2000. some what on decel although not as badly. if you hit the entrance ramp to the highway and floor it, it will register several hundred misfires on 2&5 within a minute. i have che...
February 12, 2009
2005 Saab 9-3 Linear 2.0L Misfire, MIL Lamp on VIN: YS3FB49SX5
P0300: Radom Missfire. Started with Champion plugs and still had miss and it is usually read 1-5 misses on at least 3 cylinders. It has not reset the check engine light yet but i have not ran it very long just enough to feel the miss and the shut it off to cold soak again. Tried the...
February 12, 2009
2003 Lincoln LS 3.9L Misfire, MIL Lamp on VIN: 1LNHM87A23
P0300: multiple missfire. Hello everyone, please help me with this Lincoln LS has multiple missfire.I fould most of the spark plug hoses were full of oil,so i replace valve cover gasket,spark plugs and 2 coils #4 and #5,then cleared code and test drove.Code PO354 and PO355 came back. I...
February 15, 2009
2000 Dodge Intrepid 2.7L No Start VIN: 2B3HD4CR2Y
P0300: Multiple Cylinder Misfire Detected. car just died and would not restart. i checked spark(has spark) the fuel pump and relay are operating. this car is in a parking lot away from my shop. so i did not take off the plenum yet to check pressure or pulse. can the crank or cam sensors be bad and stil...
February 17, 2009
2002 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 2GTEC19T22
P0300: Multiple Cylinder Misfire Detected. This car came in with a MIL and P0300. The owner said the truck ran fine and had no drivability complaints. A few occasional misfires show up at idle, but not biased toward one cylinder. After looking on the ignition scope, the firing kV was about 10-13V, spar...
February 18, 2009
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 1GCEK19T63
P0300: Multiple Cylinder Misfire Detected. Vehicle came to us running poorly, low power and check engine lamp flashing. normal diagnosis, found the cats broken up and plugged. replaced all 4 oxygen sensors and cat pipe, cleared codes and drive cycled. ran great until next morning. after a hot soak 2-3 ...
February 19, 2009
2000 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, Surge, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCDL19WXY
P0300: Multiple Cylinder Misfire Detected. Hello to all, this is my first time using this so bear with me. i have this astro that keep throwing missfire codes on cylinders 3 and 4. after clearing codes the missfire comes back on cylinder 3 then clear them again and the new code is for cylinder 4 only. ...
February 20, 2009
2003 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 1GCEK19T63
P0300: Multiple Cylinder Misfire Detected. Vehicle came to us running poorly, low power and check engine lamp flashing. normal diagnosis, found the cats broken up and plugged. replaced all 4 oxygen sensors and cat pipe, cleared codes and drive cycled. ran great until next morning. after a hot soak 2-3 ...
February 20, 2009
2003 Jeep Liberty Sport 3.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1J4GL48K23
P0300: Multiple Misfire Detected. has random and specific cyliner misfire codes miss at idle mostly. installed new spark plugs,carbon clean,fuel pressure good check all coils with spark tester fired good,check for internal vacuum leak passed test,fuel trim both banks at 1%,clear codes comes ba...
February 20, 2009
2002 Chevrolet Silverado 2500 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCHK29U82
P0300: Multiple Cylinder Misfire Detected. The engine runs very rough at idle showing misfires mainly on cylinders 1,3,4,8. After 2000 rpm it smooths out and runs ok. The fuel pressure is ok and the egr is staying closed. It acts like a vacuum leak but we haven't been able to find one. It seems to have...
February 23, 2009
1997 GMC C1500 Sierra SL 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2GTEC19R8V
P0300: Multiple Cylinder Misfire Detected. The truck continues to get P0300 Multiple Random mis-fire code and shows mis-fires on cylinders 1, 3, & 5. Fuel pump has been replaced along with rotor, distributor, plugs, spark plug wires, etc. The intake gaskets were changed on the truck over 5 years ag...
February 23, 2009
2002 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD57YX2
P0300: Engine Misfire Detected. Hello Everyone... MAJOR headache here... Put new Dealer motor in. (Reason)Coolant leaking into cylinders. Runs Great at idle. Go to take off and have check engine light flashing and see misfires on the scanner on Cyl. #1 and #4 only under load. Feel alittle ...
February 24, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0300: misfire detected. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 24, 2009
2005 Checker Avalanche 5.3L Excessive Emissions, Poor Idle Quality, Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 3GNEK12ZX5
P0300: misfire detected. This vehicle only runs bad after hard acceleration.The map voltage goes drops to -0.60 volts.I removed the map to inspect and it was soaked with oil.i cleaned the oil off and voltage is normal around 1 volt at idle. redrove vehicle runs fine until you accelera...
February 25, 2009
1996 Audi A4 2.8L Misfire, MIL Lamp on VIN: WAUEA88D6T
P0300: random cyl misfire. Vehicle comes in with a check engine light, Retrieved Dtc 302, 304, 300, Cleared codes test drive. During test drive after shifting from 2nd to 3rd and 3rd to 4th you could feel a hesitation or such that it felt like a bad sparkplug or wire. Spark plugs were r...
February 27, 2009
2004 Chevrolet Silverado 1500 5.3L Excessive Emissions, Poor Idle Quality, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1GCEK19T84
P0300: Multiple Cylinder Misfire Detected. have put in many o2 sensers in this truck to fix single bank missfires, seems to favor killing the left bank, 3 rights to 5 lefts. have tried napa and dealer sensors both with repeat failers on this truck. first one we put left bank with the bank 2 failing a f...
February 27, 2009
2002 Volkswagen Passat GLS 1.8L Misfire, MIL Lamp on VIN: WVWPD63B62
P0300: misfire detected. CAME IN FIRST TIME FOR P0304, REPLACED ALL PLUGS AND # 4 COIL. ROAD TESTED AND ALL WAS FINE. CUSTOMER TOOK CAR, NEXT MORNING CAME BACK WITH CYL #3 MISFIRE, REPLACED #3 COIL, ROAD TESTED, ALL GOOD. CAME BACK A FEW DAYS LATER AND HAD CODE FOR#2 CYL MISFIRE, REPL...
February 27, 2009