Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for December 2008

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
1998 Chrysler Sebring JXi 2.5L Misfire, MIL Lamp on VIN: 3C3EL55H2W
P0303: Cylinder 3 Misfire Detected. First time post for me, I have a Chrysler here that counts misfires on #3, #6 Cylinders on the scan tool as soon as you load it, but there it is not misfiring, you can not feel it and nothing shows up on the scope, I originally replaced the crank sensor for a ...
December 03, 2008
1999 BMW 323i 2.5L Misfire, MIL Lamp on VIN: WBAAM3335X
P0303: 3 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
2000 Chevrolet S10 2.2L Misfire VIN: 1GCEC1944Y
P0303: Cylinder 3 Misfire Detected. ... trouble with this S10. Customer complaint was a severe hesitation when you accelerate to WOT. It also randomly misses at times, never more than once or twice. He wanted a tune-up so we replaced plugs, wires, and even tried two known good coils just to be s...
December 09, 2008
2003 Ford Mustang 3.8L No Start VIN: 1FAFP44444
P0303: cylinder misfire. Hello Guys, I have a '03 Ford Mustang that's a no start. I have checked fuel pressure-ok at 38 psi and verified rpm on an IDS while cranking-200 RPM. There is no spark from the coil pack, checked primary current for switching-no switching. I suspected a fault...
December 09, 2008
1996 Dodge Dakota 3.9L MIL Lamp on VIN: 1B7GL23X1T
P0303: Cylinder 3 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
P0303: Cylinder 3 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
P0303: Cylinder 3 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
P0303: miss 3. 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
2003 Ford Mustang 3.8L No Start VIN: 1FAFP44444
P0303: cylinder misfire. Hello Guys, I have a '03 Ford Mustang that's a no start. I have checked fuel pressure-ok at 38 psi and verified rpm on an IDS while cranking-200 RPM. There is no spark from the coil pack, checked primary current for switching-no switching. I suspected a fault...
December 16, 2008
2000 Audi S4 2.7L Misfire VIN: WAUDD68D4Y
P0303: miss 3. 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
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
2000 Subaru Legacy GT Limited 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4S3BE6564Y
P0303: Cylinder 3 Misfire Detected. We performed a cylinder head gasket job on this vehicle. We have seen it now 3 times with a MIL on with cylinder misfire codes stored. Cyl 2 and 3 being the affected cylinders. I ran through the basics and made sure ignition components were good. When I curren...
December 26, 2008
1998 Chrysler Sebring JXi 2.5L Misfire, MIL Lamp on VIN: 3C3EL55H2W
P0303: Cylinder 3 Misfire Detected. First time post for me, I have a Chrysler here that counts misfires on #3, #6 Cylinders on the scan tool as soon as you load it, but there it is not misfiring, you can not feel it and nothing shows up on the scope, I originally replaced the crank sensor for a ...
December 03, 2008
1999 BMW 323i 2.5L Misfire, MIL Lamp on VIN: WBAAM3335X
P0303: 3 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
2000 Chevrolet S10 2.2L Misfire VIN: 1GCEC1944Y
P0303: Cylinder 3 Misfire Detected. ... trouble with this S10. Customer complaint was a severe hesitation when you accelerate to WOT. It also randomly misses at times, never more than once or twice. He wanted a tune-up so we replaced plugs, wires, and even tried two known good coils just to be s...
December 09, 2008
2003 Ford Mustang 3.8L No Start VIN: 1FAFP44444
P0303: cylinder misfire. Hello Guys, I have a '03 Ford Mustang that's a no start. I have checked fuel pressure-ok at 38 psi and verified rpm on an IDS while cranking-200 RPM. There is no spark from the coil pack, checked primary current for switching-no switching. I suspected a fault...
December 09, 2008
1996 Dodge Dakota 3.9L MIL Lamp on VIN: 1B7GL23X1T
P0303: Cylinder 3 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
P0303: Cylinder 3 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
P0303: Cylinder 3 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
P0303: miss 3. 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
2003 Ford Mustang 3.8L No Start VIN: 1FAFP44444
P0303: cylinder misfire. Hello Guys, I have a '03 Ford Mustang that's a no start. I have checked fuel pressure-ok at 38 psi and verified rpm on an IDS while cranking-200 RPM. There is no spark from the coil pack, checked primary current for switching-no switching. I suspected a fault...
December 16, 2008
2000 Audi S4 2.7L Misfire VIN: WAUDD68D4Y
P0303: miss 3. 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
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
2000 Subaru Legacy GT Limited 2.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: 4S3BE6564Y
P0303: Cylinder 3 Misfire Detected. We performed a cylinder head gasket job on this vehicle. We have seen it now 3 times with a MIL on with cylinder misfire codes stored. Cyl 2 and 3 being the affected cylinders. I ran through the basics and made sure ignition components were good. When I curren...
December 26, 2008