Join Now
International Automotive Technicians Network

P0303 Diagnostic Trouble Code Discussion for March 2012

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
2004 Ford F-150 FX4 5.4L Misfire VIN: 1FTPW14544
P0303: missfire cyl 3. vehicle was towed into shop for bad missfire checked and found random missfire codes on all cyclinders checked and found plugs still original removed and replaced all plugs with factory plugs and replaced all coils with factory coil as well. upon start up of v...
March 01, 2012
2001 Ford Ranger Edge 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTYR14U31
P0303: cylinder 3 misfire detected. ... can point me in the right direction. Truck is a 2001 Ford Ranger XLT with a 3.0L. Problem, keeps setting code p0303 cylinder 3 misfire detected and runs rough at all times except cruise. Misfire counter climbs at/off idle, but not at cruise. What I have ...
March 02, 2012
2003 Honda Pilot EX 3.5L MIL Lamp on VIN: 2HKYF18653
P0303: Cylinder 3 Misfire Detected. The mis fire code for cyld 3 is the one that returns first and most frequent. The code will set at idle in stall after five to ten minutes. The fuel pressure will hold for three minutes. Out on the highway vehicle runs very good. When the cat is cool the readi...
March 05, 2012
2009 Dodge Dakota SLT 4.7L Poor Idle Quality, Misfire, Poor Fuel Economy
P0303: cylinder 3 misfire. Good morning everyone,i have this police truck that has no power.I took it for a test drive and MIL was flashing and i could feel the miss.Pull codes and these are codes that were pulled.see below.I checked spark plugs and on cylinder #5 spark plug was chipped...
March 13, 2012
1999 Toyota Avalon XL 3.0L Poor Idle Quality, Misfire VIN: 4T1BF18B8X
P0303: Cylinder 3 Misfire Detected. ... question my career choice sometimes. Car came in running fine. We found leaking valve covers and replaced the gaskets. Also installed new plugs (NGK). Upon finishing, fired the car up and it ran terrible, with a pop in the catalytic convertor area. CEL fla...
March 13, 2012
2000 Toyota Camry CE 2.2L Misfire VIN: 4T1BG22K3Y
P0303: Cylinder 3 Misfire Detected. I wonder if i created this problem by replacing the timing belt or maybe i have a bad crank sensor? Has anyone seen this before? is it a software issue? I haven't yet hooked up labscope, as it will be a real pain as the symptom only occurs above 60 mph
March 14, 2012
2000 BMW 323i 2.5L Poor Idle Quality, MIL Lamp on VIN: WBAAM3345Y
P0303: misfire cylinder 3. Hello, I got this 2000 323i that I installed an engine in and am getting a misfire on cylinder 3 when cold.It runs very good once warmed up. I have swapped the coils and plugs and injectors, several times. Misfire always stays on number 3 and always when cold....
March 19, 2012
2002 Dodge Ram 1500 Van 3.9L Excessive Emissions, Poor Idle Quality, Misfire VIN: 2B7HB11X92
P0303: Cylinder 3 Misfire Detected. I am trying to get this vehicle to pass CA smog. It has new ignition parts, good compression, I have swapped the injectors around, smoke test ect. The truck runs fine except at idle it devolopes a rough idle and sets missfire codes on multiple cylinders. Thank...
March 19, 2012
2006 Volkswagen Passat Value Edition 2.0L Misfire, MIL Lamp on VIN: WVWGK73C36
P0303: misfire cyl 3. Repeating PO303 misfir cyl 3 code, cannot verify misfire very intermitant, have replaced # 3 coil and spark plug,have swapped with other cyl,not sure where to go from here,any suggestions would be appreciated) Thanks for your time
March 22, 2012
2001 Isuzu Rodeo LS 3.2L MIL Lamp on VIN: 4S2DM58WX1
P0303: Cylinder 3 Misfire Detected. This truck runs sweet but flags misfire codes and even flashes above 1500rpm. Customer wanted a tune-up for maintenance purposes anyway, so the dealer-specified plugs were installed. Coils all put back in proper place (#6 boot shorter than the rest). No change...
March 24, 2012
2000 Jeep Cherokee Sport 4.0L Surge, Cuts out, MIL Lamp on VIN: 1J4FF48S2Y
P0303: Cylinder 3 Misfire Detected. This has 4 O2 sensors, my scanner only shows 2 O2 pids. All pids look good until it acts up with really bad surge/cuts out. O2's go to .02V, Long and Short term fuel trims go to 0 and pulsewidth jump from 0 to 18msec. I did not check fuel pressure, I'm thinkin...
March 27, 2012
2000 Jeep Cherokee Sport 4.0L Surge, Cuts out, MIL Lamp on VIN: 1J4FF48S2Y
P0303: Cylinder 3 Misfire Detected. This has 4 O2 sensors, my scanner only shows 2 O2 pids. All pids look good until it acts up with really bad surge/cuts out. O2's go to .02V, Long and Short term fuel trims go to 0 and pulsewidth jump from 0 to 18msec. I did not check fuel pressure, I'm thinkin...
March 28, 2012