gnarly Posted October 1, 2004 Share Posted October 1, 2004 Yesterday morning when I started my 2000 ES 300 (76,000 miles) it ran rough for about 5 seconds and then I got the Check Engine and Trac Off lights. Took it to a local Toyota dealer where they found a code of P0300 stored. This is a random misfire detected error. They suggested a general tune-up. I'm wondering if anyone out there has experienced this error and what specifically was the cause?? Quote Link to comment Share on other sites More sharing options...
steviej Posted October 2, 2004 Share Posted October 2, 2004 P0300 is misfiring of random cylinders detected during any particular 200 or 1000 revolutions. Trouble areas: -Open or short in engine wire -Connector connection -Vacuum hose connection -Ignition system -Fuel pressure -Intake air flow meter -EFI engine coolant temp. sensor -Compression pressure -Valve clearence -Valve timing -PCV hose connection -ECM steviej Quote Link to comment Share on other sites More sharing options...
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