Error codes 543 & 454

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06-11-2009, 09:58 PM

Dainos

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Error codes 543 & 454

My car started idling rough and the check eng light came on and I pulled the following codes 543 and 454. Could it be the plugs are bad?

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06-12-2009, 12:05 AM

gdog

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Both are misfire codes; could be plugs; could be lots of things...

Did you look at the plugs?

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06-12-2009, 11:06 PM

850tony

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cyl #4 has a misfire. check the plug and the plug wire/s. if that all seems good check the cap and rotor.

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