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P0301 Diagnostic Trouble Code Discussion for August 2013

Cylinder 1 Misfire Detected


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Trouble Ticket Help Requests for DTC P0301
Help Request Posted
1997 Toyota T100 DLX 3.4L Misfire VIN: JT4UN22D9V
P0301: Cylinder 1 Misfire Detected. Hey Fellow Techs. Working on This T100. Intermittently the vehicle will misfire on cyl. #2 in park or in gear and cyl. #1 only in gear. Watching misfire on scan tool. Replaced plugs wires Igniter and coils. Same problem same cylinders misfiring #1 and #2. Swap...
August 01, 2013
2007 Subaru B9 Tribeca Limited 3.0L MIL Lamp on VIN: 4S4WX82D87
P0301: Cylinder 1 Misfire Detected. ... p0301, p0303, p0305 about every 3k miles. have changed air fuel ratio sensors and have swapped o2 sensors from side to side. have done smoke test and no vaccum leaks. oil has been changed on scheduale and is running synthetic oil.vvt is functioning correct...
August 07, 2013
2000 Land Rover Range Rover SE 4.0L MIL Lamp on, random misfire bank VIN: SALPV1542Y
P0301: misfire cylinder 1. The problem has never happened for us, customer states it happens most often with engine not fully warmed up, and does not happen when engine is hot. We suspect it is coils but they do not fire all on one side. So what am I missing here. Thanks for the help. B...
August 09, 2013
1998 Ford Ranger XL 2.5L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1FTYR14C2W
P0301: miss cyl 1. I found denso plugs in this ford and could not verify their correct application through any of our local parts stores.Installed correct autolights and new cables on all 8 plgs.My need or question here is the functionality of this 4 cylinder ignition .8 plugs,2...
August 20, 2013
2010 Ford E-450 Super Duty 6.8L MIL Lamp on VIN: 1FDFE4FS8A
P0301: Cyl. 1 misfire. Compression test good. Leak test for vacuum leaks. Tested & switched location of all coils, plugs & injectors. #1 & 7 Injectors click during misfire, spark stays constant. Checked wiring resistance from ecm to injectors & coils. Ran with altern...
August 20, 2013
1998 Ford Ranger XL 2.5L Poor Idle Quality, Cuts out, Misfire, MIL Lamp on VIN: 1FTYR14C2W
P0301: miss cyl 1. I found denso plugs in this ford and could not verify their correct application through any of our local parts stores.Installed correct autolights and new cables on all 8 plgs.My need or question here is the functionality of this 4 cylinder ignition .8 plugs,2...
August 21, 2013