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P0305 Error Code - Replace Heads?
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Author:  Shannon [ Sat Jul 20, 2013 1:46 pm ]
Post subject:  P0305 Error Code - Replace Heads?

Got the p0300/p0305 error code. Replaced spark plugs as they were within 5k of needing to be changed out anyway. CEL is still on. Is there anything else I can do? I'm thinking it might be the 09-007-06 TSB but I have no way to test that other than take it to dealership.

Author:  TheJawsOfDeath [ Sun Jul 21, 2013 11:51 pm ]
Post subject:  Re: P0305 Error Code - Replace Heads?

How bad is your engine running right now? Do you feel a hard misfire, horrible noise, or it won't run?

Author:  Shannon [ Tue Jul 23, 2013 9:42 pm ]
Post subject:  Re: P0305 Error Code - Replace Heads?

Doesn't seem to be running too bad, idles a little rough but it always has since new. Feels like it doesn't have as much power as it used to though.

Author:  STINGN [ Wed Jul 24, 2013 2:37 am ]
Post subject:  Re: P0305 Error Code - Replace Heads?

check coil packs?

Author:  TheJawsOfDeath [ Thu Jul 25, 2013 11:59 am ]
Post subject:  Re: P0305 Error Code - Replace Heads?

switch the coil on cylinder #5 around with another one and see if the misfire follows the coil or stays on cylinder 5.

Author:  Shannon [ Sat Jul 27, 2013 3:25 pm ]
Post subject:  Re: P0305 Error Code - Replace Heads?

Switched coil packs...stayed on 5 so then I switched injectors...stayed on 5. Did a compression test and had low compression (135) on 1 and 5.

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