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P0303 Diagnostic Trouble Code Discussion for December 2005

Cylinder 3 Misfire Detected


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Trouble Ticket Help Requests for DTC P0303
Help Request Posted
2000 Ford E-250 Econoline 4.2L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1FTNE2422Y
P0303: missfire cyl 3. van came in with lean codes, cyl #3 missfire code. fuel,ignition,vaccum,compression, injector #3 scope pattern perfect. famous egr problem not the fix. installed factory parts plugs coil pack ig. wires!! still missfire#3 at idle under load any holiday, santa i...
December 01, 2005
1996 Honda Accord EX 2.2L Poor Idle Quality, Surge, Stall, Misfire, MIL Lamp on VIN: 1HGCD5661T
P0303: Cylinder 3 Misfire Detected. ... p0301 and p0303. Cylinder head was removed and surfaced. After reinstall of head vehicle has same codes and rough idle and surging at idle. Overheating is fixed. We have scoped the dist and crank sensor with nothing unusu...
December 01, 2005
2000 Ford Escort ZX2 2.0L MIL Lamp on VIN: 3FAKP1135Y
P0303: misfire cyl 3. mil light flashes @ 2000 rpm & has misfire codes cyls 2 & 3, but engine does not misfire. cam, crank & ign pattern seem to be ok on scope. no bullitins found for possible reflash.
December 13, 2005
1999 Subaru Forester L 2.5L Misfire, MIL Lamp on VIN: JF1SF6352X
P0303: Cylinder 3 Misfire Detected. ... was not symptomatic at the time, the above codes were stored (P0303, P0304). Freeze data showed a warm engine, ~1200 rpm, STFT 6%, LTFT 11%, closed loop, TPS 22%. We found original spark plugs and wires, and replaced them...
December 14, 2005
1999 Subaru Forester L 2.5L Misfire, MIL Lamp on VIN: JF1SF6352X
P0303: Cylinder 3 Misfire Detected. ... was not symptomatic at the time, the above codes were stored (P0303, P0304). Freeze data showed a warm engine, ~1200 rpm, STFT 6%, LTFT 11%, closed loop, TPS 22%. We found original spark plugs and wires, and replaced them...
December 15, 2005
1996 Ford Windstar GL 3.8L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2FMDA5145T
P0303: Misfire 3. I need some thoughts on this. If this van is allowed to sit in the shop running until the fan cycles at least twice, then shut off and allowed to heat soak over 10 minutes it will run poorly with multiple cylinder misfires. The fuel trims will increase to 25% ...
December 28, 2005