Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for May 2009

Cylinder 3 Misfire Detected


Note: This is a professional automotive technician's resource.
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2003 Honda Civic Si 2.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: SHHEP33513
P0303: Cylinder 3 Misfire Detected. This vehicle came in barely running.Misfiring on all cylinders.Way too much fuel,plugs were black.Oxygen sesnsor comes and goes.When it is reading its 1.2 volts and long term and short fuel trims maxed fuel reduction.I have good spark to all cylinders.Replaced...
May 02, 2009
1999 Ford Explorer XL 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMZU32X8X
Thanks in advanced guys and gals, normally this is a piece of cake.this explorer in our fleet has a bad miss especally at idle not too bad going down the road.originally had code for cyl. 3 needed tune up so plugs and wires replaced with no luck.changed out co...
May 04, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P0303: Cylinder 3 misfire. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 04, 2009
2002 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWRH63B52
P0303: 3 cyl.missfire. ok have checked all but cam chain timing on bank one this will be my next step . but if any body out there has any idea what is going on please help. also alldata says there should be a 9v ref. at both sensors is this true? i have 5v ref.
May 05, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P0303: Cylinder 3 misfire. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 12, 2009
1996 Mazda 626 DX 2.0L Misfire, MIL Lamp on VIN: 1YVGE22C9T
P0303: Cylinder 3 Misfire Detected. ... 30 miles and caught light flash 7 times then on solid. But the funny thing is you couldn't feel any missfire what so ever. when vehicle first arrived at my shop i pulled a pending code and history code p0300 and p0304. the OTHER SHOP before their tune up p...
May 13, 2009
2006 Honda Civic EX 1.8L Hesitation, Misfire, MIL Lamp on VIN: 2HGFG11896
P0303: Cylinder 3 Misfire Detected. good afternoon, this one is for the honda guys out there. we installed a used 7k mile long block from a 2007 modle car supplied to us by an aftermarket warranty company. (very clean engine) it was supplied with valve cover and oil pan only. we transfered all t...
May 14, 2009
1999 Lexus ES300 3.0L MIL Lamp on VIN: JT8BF28G1X
P0303: Cylinder 3 Misfire Detected. Hi This lexus came in running fine and I cant dublicate the problem. The Customer says on a long drive the car will sometimes lose power and misfire on acceleration.There is misfire codes for cyl 1 3 5 and a code p1349 variable valve timing problem bank 1.I re...
May 14, 2009
2002 Ford Taurus SE 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FAFP53U22
P0303: misfire on clinder 3. ... P0303,P0175 and P0316.I checked for leaking injectors,vacuum leaks and any other problem i could think of that could cause a misfire.The car has good spark and fluel.I aslo check the MAF sensor ...
May 17, 2009
2002 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: A22S066804
P0303: Cylinder 3 Misfire Detected. Need Toyota help on a 4.7 V8. This thing misfires on all the odd cylinders bank 1. Only does it during idle ,cruise is ok.Suspect a problem with variable valve timing?
May 18, 2009
2002 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: A22S066804
P0303: Cylinder 3 Misfire Detected. Need Toyota help on a 4.7 V8. This thing misfires on all the odd cylinders bank 1. Only does it during idle ,cruise is ok.Suspect a problem with variable valve timing?
May 19, 2009
2000 Toyota Camry LE 3.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: 4T1BF22K82
P0303: Cylinder 3 Misfire Detected. 2000 toyota camry le with 3.0 came in for a tune up - we replaced plugs,wires and fuel filter. engine still skipping with poor idle when warms up,cylinders # 1,3 and 5 misfiring,cat. glowing red. fuel trims- bnk 1 - 52%; bnk 2 - -37%. tried replacing [...] and...
May 20, 2009
2004 Chrysler Sebring Limited 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C3EL65RX4
P0303: Cylinder 3 Misfire Detected. koeo check engine light flashes ten time exactly, long and short term trims on bank 1 only both climbed down to -30. initial startup to 30 seconds runs fine, after that fuel trims drop and misfires on all bank 1 cylinders begin to show up. bank 2 shows fine, n...
May 21, 2009
2002 Mitsubishi Montero XLS 3.5L Misfire VIN: JA4MW31R22
P0303: Cylinder 3 Misfire Detected. replace ignition coil for 3 and 6 cylindere due to burned coil tower at the number 6 cylinder. after replacing coil the engine still has a misfire and no spark from the new coil. it has reference voltage. the coil is inop. thanks for any help you can offer.
May 21, 2009
2001 Mazda Tribute ES 3.0L Misfire VIN: 4F2YU09101
P0303: Cylinder 3 Misfire Detected. Car came in with misfire under load. Did intake gasket, plugs and boots. moved back coils to front. Could not get it to act up after this work. Car left for two weeks. Customer said that car was running real bad and then check engine light came on and it ran s...
May 27, 2009
2002 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 1HGEM219X2
P0303: cyl 3 misfire. ok everyone. this civic is beating me up! need advise.. i got this 02 civic ex 5sp. only got 59k on it. intermittent misfire. only happens when engine is cold. found spark plugs worn, replaced w/ genuine honda parts. thought o2s1 was slow. replaced w/ denso re...
May 30, 2009
2003 Honda Civic Si 2.0L Excessive Emissions, Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire, MIL Lamp on VIN: SHHEP33513
P0303: Cylinder 3 Misfire Detected. This vehicle came in barely running.Misfiring on all cylinders.Way too much fuel,plugs were black.Oxygen sesnsor comes and goes.When it is reading its 1.2 volts and long term and short fuel trims maxed fuel reduction.I have good spark to all cylinders.Replaced...
May 02, 2009
1999 Ford Explorer XL 4.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FMZU32X8X
Thanks in advanced guys and gals, normally this is a piece of cake.this explorer in our fleet has a bad miss especally at idle not too bad going down the road.originally had code for cyl. 3 needed tune up so plugs and wires replaced with no luck.changed out co...
May 04, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P0303: Cylinder 3 misfire. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 04, 2009
2002 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWRH63B52
P0303: 3 cyl.missfire. ok have checked all but cam chain timing on bank one this will be my next step . but if any body out there has any idea what is going on please help. also alldata says there should be a 9v ref. at both sensors is this true? i have 5v ref.
May 05, 2009
2001 Volkswagen Passat GLX 2.8L Misfire, MIL Lamp on VIN: WVWBH63B01
P0303: Cylinder 3 misfire. This car is killing us, I believe it had compound problems, and we are chipping away at them, but this misfire is really puzzling, the new parts are listed above, also, the oil pressure is good(29 psi at idle and 55 psi at 2,000 rpm), fuel pressure within spec...
May 12, 2009
1996 Mazda 626 DX 2.0L Misfire, MIL Lamp on VIN: 1YVGE22C9T
P0303: Cylinder 3 Misfire Detected. ... 30 miles and caught light flash 7 times then on solid. But the funny thing is you couldn't feel any missfire what so ever. when vehicle first arrived at my shop i pulled a pending code and history code p0300 and p0304. the OTHER SHOP before their tune up p...
May 13, 2009
2006 Honda Civic EX 1.8L Hesitation, Misfire, MIL Lamp on VIN: 2HGFG11896
P0303: Cylinder 3 Misfire Detected. good afternoon, this one is for the honda guys out there. we installed a used 7k mile long block from a 2007 modle car supplied to us by an aftermarket warranty company. (very clean engine) it was supplied with valve cover and oil pan only. we transfered all t...
May 14, 2009
1999 Lexus ES300 3.0L MIL Lamp on VIN: JT8BF28G1X
P0303: Cylinder 3 Misfire Detected. Hi This lexus came in running fine and I cant dublicate the problem. The Customer says on a long drive the car will sometimes lose power and misfire on acceleration.There is misfire codes for cyl 1 3 5 and a code p1349 variable valve timing problem bank 1.I re...
May 14, 2009
2002 Ford Taurus SE 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FAFP53U22
P0303: misfire on clinder 3. ... P0303,P0175 and P0316.I checked for leaking injectors,vacuum leaks and any other problem i could think of that could cause a misfire.The car has good spark and fluel.I aslo check the MAF sensor ...
May 17, 2009
2002 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: A22S066804
P0303: Cylinder 3 Misfire Detected. Need Toyota help on a 4.7 V8. This thing misfires on all the odd cylinders bank 1. Only does it during idle ,cruise is ok.Suspect a problem with variable valve timing?
May 18, 2009
2002 Toyota Sequoia SR5 4.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: A22S066804
P0303: Cylinder 3 Misfire Detected. Need Toyota help on a 4.7 V8. This thing misfires on all the odd cylinders bank 1. Only does it during idle ,cruise is ok.Suspect a problem with variable valve timing?
May 19, 2009
2000 Toyota Camry LE 3.0L Excessive Emissions, Poor Idle Quality, Misfire VIN: 4T1BF22K82
P0303: Cylinder 3 Misfire Detected. 2000 toyota camry le with 3.0 came in for a tune up - we replaced plugs,wires and fuel filter. engine still skipping with poor idle when warms up,cylinders # 1,3 and 5 misfiring,cat. glowing red. fuel trims- bnk 1 - 52%; bnk 2 - -37%. tried replacing [...] and...
May 20, 2009
2004 Chrysler Sebring Limited 2.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1C3EL65RX4
P0303: Cylinder 3 Misfire Detected. koeo check engine light flashes ten time exactly, long and short term trims on bank 1 only both climbed down to -30. initial startup to 30 seconds runs fine, after that fuel trims drop and misfires on all bank 1 cylinders begin to show up. bank 2 shows fine, n...
May 21, 2009
2002 Mitsubishi Montero XLS 3.5L Misfire VIN: JA4MW31R22
P0303: Cylinder 3 Misfire Detected. replace ignition coil for 3 and 6 cylindere due to burned coil tower at the number 6 cylinder. after replacing coil the engine still has a misfire and no spark from the new coil. it has reference voltage. the coil is inop. thanks for any help you can offer.
May 21, 2009
2001 Mazda Tribute ES 3.0L Misfire VIN: 4F2YU09101
P0303: Cylinder 3 Misfire Detected. Car came in with misfire under load. Did intake gasket, plugs and boots. moved back coils to front. Could not get it to act up after this work. Car left for two weeks. Customer said that car was running real bad and then check engine light came on and it ran s...
May 27, 2009
2002 Honda Civic EX 1.7L Misfire, MIL Lamp on VIN: 1HGEM219X2
P0303: cyl 3 misfire. ok everyone. this civic is beating me up! need advise.. i got this 02 civic ex 5sp. only got 59k on it. intermittent misfire. only happens when engine is cold. found spark plugs worn, replaced w/ genuine honda parts. thought o2s1 was slow. replaced w/ denso re...
May 30, 2009