O.K. Codes are as follows:
P0300- Multiple Mis-fires and P-0303 Cylinder 3 mis-fire
Now, to recap. The first time it started running bad, after I replaced the EGR Valve and spark plugs, the codes said multiple misfires (P0300), P0303, P0307
I took it to the dealer, who said coils were bad on cyl 3 & 7. Replaced them, two weeks later problem returns, checked and it was Cyl 7 again. Replaced coil, ran good three days, then problem returned, showed Po307, cyl 7 Replaced coil again, ran good two days, not running terrible again, and the new codes are as listed at top pf e-mail. Someone said it might be the Bosch spark plugs? Doesn't sound right. And why is it always 3 or 7 ( mostly 7) that craters?
Friday, July 24th, 2009 AT 9:04 AM