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PostSubject: misfire problem   misfire problem Icon_minitimeSun Sep 01, 2013 6:33 pm

earlier this summer i started getting a misfire, my wagon has 140k miles on it. i have replaced the spark plugs, wires, coil, and opti, but i am still getting a misfire and code p0300 (random misfire detected). im puzzled on what more it could be, could the ecm be bad? or am i missing something
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Krzdimond
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Krzdimond

Posts : 3398
Join date : 2008-11-04
Age : 52
Location : Savannah, GA

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PostSubject: Re: misfire problem   misfire problem Icon_minitimeSun Sep 01, 2013 9:04 pm

The P0300 for me got worse and ended up being the Opti..... Did you replace with the Delphi, or a Chinese knockoff....
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PostSubject: Re: misfire problem   misfire problem Icon_minitimeTue Sep 03, 2013 10:17 am

i went to napa and got an ecklen (i think) cap and rotor and got a remanufactured opti from napa too
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Limited1

Limited1

Posts : 52
Join date : 2011-08-23
Location : NE Ohio

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PostSubject: Re: misfire problem   misfire problem Icon_minitimeWed Sep 25, 2013 8:00 pm

I got that code on my old 96 Impala and it was a plug that went bad. Then another time on that car one of the plug wires randomly touched the header and made that code show up.
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