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Old 08-11-2010, 12:49 PM   #1
cajunboyla
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Help please!!!

My 84 vette "check engine" light is on. I ran a diagnosis and got the code 42 error for the EST and the ECM. I've changed the EST(SPARK MODULE) and still has the error message. Should I change the ECM(CONTROL MODULE) as well to clear the message?
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Old 08-11-2010, 08:09 PM   #2
oldblu65
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Re: Help please!!!

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