2003 Toyota Corolla engine has p0302 code

2003 TOYOTA COROLLA
87,000 MILES • 4 CYL • FWD • AUTOMATIC
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4WHEELING
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Hi i just had my corrolla ran on a diagnostic machine and it shows a p0302 code which is for a misfire in #2 cylinder from eith spark plug or coil,i replaced all sparkplugs with factory irridium plugs and the#2 coil,and no improvement.
the car idles rough and engine vibrates when running with constant check engine light,when it is driven under load the light flashes when the throttle is engaged,when i let off the trottle after a while it stops flashing and goes to constant lit.
any suggestions,this is starting to annoy me and my pockets thanks.
vehicle is inoperable in its current state.
Jan 8, 2009 at 4:20 PM
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BMRFIXIT
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You need to determine if the injector pulsing
and also if the coil firing
and if so do a compression test
unplug the coil connector and check if you have power at one wire and with the car running the other side should be flashing
or u can use a noid light same for the injector
let us know
Jan 8, 2009 at 4:36 PM