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P0303 Diagnostic Trouble Code Discussion for April 2010

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
1997 Ford Escort LX 2.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 3FALP15P4V
P0303: misfire 3. cust. comes in complaining of no power and SES light on. a quick scan shows misfires cyls. #1 & 4. cust said same problem happened 1-2 weeks ago, stopped a "another shop" and they told him to change plugs and wires. He went home and changed plugs o...
April 03, 2010
2000 Mercedes-Benz CL500 5.0L Misfire VIN: WDB2153752
P0303: ignition missfire cyl 3. G,day everyone, we have a lovely cl500 in our workshop which we require help with. Anything over half throttle engine missfires and will not rev over 3000rpm. We have downloaded fault codes which indicate cyls 1,2,3,4 (right bank) missfiring. We have replaced ...
April 06, 2010
2006 Suzuki Forenza 2.0L Hesitation, Misfire, MIL Lamp on VIN: KL5JD56Z36
P0303: Cylinder 3 Misfire Detected. Hello all got a suzuki forenza here that driveing me insane. CAr came to me about week ago running rough. Water pump broken timeing jumped. Removed valve cover did leak down test passed all cyl sealed up good and tight. Replaced water pump timing belt and ten ...
April 06, 2010
2000 Lexus ES300 3.0L Misfire VIN: FT8BF28GXY
P0303: Cylinder 3 Misfire Detected. this one is eating my lunch. the car has been back twice for misfire. the same coil has been replaced 3 times (factory toyota parts ) the car will run ok for up to 3 weeks or as little as 2 days, but still comes back with bad coils, as soon as its replaced it ...
April 08, 2010
2002 Kia Sedona EX 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: KNDUP13142
P0303: Cylinder 3 Misfire Detected. Van has poor idle quality under 1000 rpm. Load it and take it over 1000 rpm and smooths out. Runs great at freeway speed. Will only throw codes at stop light. I think maybe timing belt off a bit, or tensioner is bad, or has bad crank sensor, but no code for cr...
April 09, 2010
2005 Mazda 3 i 2.0L Poor Idle Quality, Misfire VIN: JM1BK12F85
P0303: Cylinder 3 Misfire Detected. Car came in for rough idle when hot - we replaced leaking purge valve ( car had a lean code and po303). Customer picked up car and came back a week later with po303 - installed new plugs , #3 coil and did decarbon and throttle body clean . during long test dri...
April 12, 2010
2003 Jaguar S-Type 4.2L MIL Lamp on VIN: SAJEA01U43
Hello all. This s-type has misfire faults for all cylinders except 7 & 8 and the map sensor circuit fault. Has anyone seen this on one of these normally aspirated 4.2's ? would just throw a MAP sensor on it and see, but it is an ugly job and the customer i...
April 13, 2010
2005 Mazda 3 i 2.0L Poor Idle Quality, Misfire VIN: JM1BK12F85
P0303: Cylinder 3 Misfire Detected. Car came in for rough idle when hot - we replaced leaking purge valve ( car had a lean code and po303). Customer picked up car and came back a week later with po303 - installed new plugs , #3 coil and did decarbon and throttle body clean . during long test dri...
April 14, 2010
2001 Volkswagen Passat GLX 4 Motion 2.8L Misfire VIN: WVWTH63B41
P0303: cyc 3 misfire. This passat came in from a differnt local shop. They replaced wires, plugs, injector on cyl 3. When the car first came in I check injector pulse, spark, did a compression test 175 and a leakdown 0%. We also check belt timing with the (real tools) fuel pressure...
April 16, 2010
2001 Dodge Grand Caravan ES 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2B4GP74L52
P0303: Cylinder 3 Misfire Detected. They replaced the plugs an wires also the coil assy the car is running rough at all times the coil is not firing the num six terminal an some time the num three tried a known good coil as theres was a used unit same thing all fuses are good this ford guy would...
April 19, 2010
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, MIL Lamp on VIN: WVWVD63B83
repaired several vacuum leaks, replaced 3 coils and all spark plugs, customer always runs 87 octane when premium is called for we alwayws fill with premium and it ran well. now the rough idle will not go away in closed loop. runs well down the road with plenty...
April 19, 2010
2001 Ford Taurus LX 3.0L Misfire VIN: 1FAFP55221
P0303: Missfire cylinder 3. Guys and Gals, My tech is banging his head to death on this Taurus. And the worst part is he was a Ford Tech for 25 years! It came in with #3 misfire, he replaced the injector and the car went away running fine. A day later it's back with the same misfire. S...
April 20, 2010
2005 Ford F-150 FX4 5.4L Misfire, MIL Lamp on VIN: 1FTPX04595
P0303: cylinder missfire. Ok this vehicle cam in with engine noise and a missfire.Upon inspection I found a bad injector on #6 cylinder that had stuck open.replaced injector and removed oil pan for inspection.Had bent #6 rod.removed cylinder head and replaced rod and piston.Now that ve...
April 20, 2010
2002 Volvo S40 1.9L Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: YV1VS29502
P0303: Cylinder 3 misfire. ... customer complaint car intermittent loss power. Install scanner, no dtc. Road test, vertify complaint, install scanner, pending code p0303. Sway coil, spark plug, wire and injector, still misfire on #3. Pedning code also go away after key off. Check timing...
April 21, 2010
2002 Dodge Ram 1500 Truck 4.7L Misfire, MIL Lamp on VIN: 1D7HA18N92
P0303: Cylinder 3 Misfire Detected. The vehicle had a misfire most of the time idling in the number 3 cyllinder and sometimes in number 1 while observing misfire counter. After alot of testing I found the number 1 and 3 injectors not getting a signal, noid light did not light up and no pulse wid...
April 22, 2010
2002 Dodge Ram 1500 Truck 4.7L Misfire, MIL Lamp on VIN: 1D7HA18N92
P0303: Cylinder 3 Misfire Detected. The vehicle had a misfire most of the time idling in the number 3 cyllinder and sometimes in number 1 while observing misfire counter. After alot of testing I found the number 1 and 3 injectors not getting a signal, noid light did not light up and no pulse wid...
April 24, 2010
2004 Ford E-250 5.4L Misfire VIN: 1FTSS34L34
P0303: miss cyl 3. comp on affected cylinders is 165 and 160 coils and plugs were replaced with new no vacum leaks detected injecters are firing checked with noid lite and solarity scope vacum is stable at 20 in
April 28, 2010
1997 Ford Escort LX 2.0L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 3FALP15P4V
P0303: misfire 3. cust. comes in complaining of no power and SES light on. a quick scan shows misfires cyls. #1 & 4. cust said same problem happened 1-2 weeks ago, stopped a "another shop" and they told him to change plugs and wires. He went home and changed plugs o...
April 03, 2010
2000 Mercedes-Benz CL500 5.0L Misfire VIN: WDB2153752
P0303: ignition missfire cyl 3. G,day everyone, we have a lovely cl500 in our workshop which we require help with. Anything over half throttle engine missfires and will not rev over 3000rpm. We have downloaded fault codes which indicate cyls 1,2,3,4 (right bank) missfiring. We have replaced ...
April 06, 2010
2006 Suzuki Forenza 2.0L Hesitation, Misfire, MIL Lamp on VIN: KL5JD56Z36
P0303: Cylinder 3 Misfire Detected. Hello all got a suzuki forenza here that driveing me insane. CAr came to me about week ago running rough. Water pump broken timeing jumped. Removed valve cover did leak down test passed all cyl sealed up good and tight. Replaced water pump timing belt and ten ...
April 06, 2010
2000 Lexus ES300 3.0L Misfire VIN: FT8BF28GXY
P0303: Cylinder 3 Misfire Detected. this one is eating my lunch. the car has been back twice for misfire. the same coil has been replaced 3 times (factory toyota parts ) the car will run ok for up to 3 weeks or as little as 2 days, but still comes back with bad coils, as soon as its replaced it ...
April 08, 2010
2002 Kia Sedona EX 3.5L Poor Idle Quality, Misfire, MIL Lamp on VIN: KNDUP13142
P0303: Cylinder 3 Misfire Detected. Van has poor idle quality under 1000 rpm. Load it and take it over 1000 rpm and smooths out. Runs great at freeway speed. Will only throw codes at stop light. I think maybe timing belt off a bit, or tensioner is bad, or has bad crank sensor, but no code for cr...
April 09, 2010
2005 Mazda 3 i 2.0L Poor Idle Quality, Misfire VIN: JM1BK12F85
P0303: Cylinder 3 Misfire Detected. Car came in for rough idle when hot - we replaced leaking purge valve ( car had a lean code and po303). Customer picked up car and came back a week later with po303 - installed new plugs , #3 coil and did decarbon and throttle body clean . during long test dri...
April 12, 2010
2003 Jaguar S-Type 4.2L MIL Lamp on VIN: SAJEA01U43
Hello all. This s-type has misfire faults for all cylinders except 7 & 8 and the map sensor circuit fault. Has anyone seen this on one of these normally aspirated 4.2's ? would just throw a MAP sensor on it and see, but it is an ugly job and the customer i...
April 13, 2010
2005 Mazda 3 i 2.0L Poor Idle Quality, Misfire VIN: JM1BK12F85
P0303: Cylinder 3 Misfire Detected. Car came in for rough idle when hot - we replaced leaking purge valve ( car had a lean code and po303). Customer picked up car and came back a week later with po303 - installed new plugs , #3 coil and did decarbon and throttle body clean . during long test dri...
April 14, 2010
2001 Volkswagen Passat GLX 4 Motion 2.8L Misfire VIN: WVWTH63B41
P0303: cyc 3 misfire. This passat came in from a differnt local shop. They replaced wires, plugs, injector on cyl 3. When the car first came in I check injector pulse, spark, did a compression test 175 and a leakdown 0%. We also check belt timing with the (real tools) fuel pressure...
April 16, 2010
2001 Dodge Grand Caravan ES 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2B4GP74L52
P0303: Cylinder 3 Misfire Detected. They replaced the plugs an wires also the coil assy the car is running rough at all times the coil is not firing the num six terminal an some time the num three tried a known good coil as theres was a used unit same thing all fuses are good this ford guy would...
April 19, 2010
2003 Volkswagen Passat GLS 1.8L Poor Idle Quality, MIL Lamp on VIN: WVWVD63B83
repaired several vacuum leaks, replaced 3 coils and all spark plugs, customer always runs 87 octane when premium is called for we alwayws fill with premium and it ran well. now the rough idle will not go away in closed loop. runs well down the road with plenty...
April 19, 2010
2001 Ford Taurus LX 3.0L Misfire VIN: 1FAFP55221
P0303: Missfire cylinder 3. Guys and Gals, My tech is banging his head to death on this Taurus. And the worst part is he was a Ford Tech for 25 years! It came in with #3 misfire, he replaced the injector and the car went away running fine. A day later it's back with the same misfire. S...
April 20, 2010
2005 Ford F-150 FX4 5.4L Misfire, MIL Lamp on VIN: 1FTPX04595
P0303: cylinder missfire. Ok this vehicle cam in with engine noise and a missfire.Upon inspection I found a bad injector on #6 cylinder that had stuck open.replaced injector and removed oil pan for inspection.Had bent #6 rod.removed cylinder head and replaced rod and piston.Now that ve...
April 20, 2010
2002 Volvo S40 1.9L Hesitation, Stall, Misfire, Poor Fuel Economy, MIL Lamp on VIN: YV1VS29502
P0303: Cylinder 3 misfire. ... customer complaint car intermittent loss power. Install scanner, no dtc. Road test, vertify complaint, install scanner, pending code p0303. Sway coil, spark plug, wire and injector, still misfire on #3. Pedning code also go away after key off. Check timing...
April 21, 2010
2002 Dodge Ram 1500 Truck 4.7L Misfire, MIL Lamp on VIN: 1D7HA18N92
P0303: Cylinder 3 Misfire Detected. The vehicle had a misfire most of the time idling in the number 3 cyllinder and sometimes in number 1 while observing misfire counter. After alot of testing I found the number 1 and 3 injectors not getting a signal, noid light did not light up and no pulse wid...
April 22, 2010
2002 Dodge Ram 1500 Truck 4.7L Misfire, MIL Lamp on VIN: 1D7HA18N92
P0303: Cylinder 3 Misfire Detected. The vehicle had a misfire most of the time idling in the number 3 cyllinder and sometimes in number 1 while observing misfire counter. After alot of testing I found the number 1 and 3 injectors not getting a signal, noid light did not light up and no pulse wid...
April 24, 2010
2004 Ford E-250 5.4L Misfire VIN: 1FTSS34L34
P0303: miss cyl 3. comp on affected cylinders is 165 and 160 coils and plugs were replaced with new no vacum leaks detected injecters are firing checked with noid lite and solarity scope vacum is stable at 20 in
April 28, 2010