Check Lights

[gnarly]

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??

[steviej]

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