i just installed E3 spark plugs in my 2010 tahoe 5.3 motor. the plugs where the only change that i made. i turned the car on and it ran rough. the DIC gave me service stabilitrack and service traction control. i got trouble codes P0300 and P3400 when i plugged my reader into the obd port. which is miss fire and and bank 1 shutdown i believe. the idle is running really rough. i pulled and reinstalled all the plugs torquing to specs. what would cause the problem of miss fire after just changing the plugs
Jul 23, 2010 at 9:05 PM