Code P0300, need help!

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Sep 19, 2005 | 05:55 PM

NumberOneSled

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From: Orlando, FL

Code P0300, need help!

My buddy's car just threw this code, p0300, I looked it up and it said: Random/Multiple cylinder misfire detected. He put MTI's sleeper II cam in about a month and a half ago, could this have something to do with it? First time this code has come up. Would appreciate any info. Thanks,

Chris

Sep 19, 2005 | 08:32 PM

wrencher

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From: Chicagoland

A lopey cam & no tuning can give you this code.

Sep 19, 2005 | 08:34 PM

RedHardSupra

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From: Laurel, MD

yes, but WHY does it 'misfire'? is it real misfire, or is something just out of the range of the regular cam so it interprets it as misfire?

Sep 20, 2005 | 01:04 PM

dummer

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I think the lope of the cam causes the PCM to falsely detect "random misfires" for whatever the technical reason is, which i don't know.
I do know this. I got the same error from time to time after my cam install, sometimes it would go a week or two.I just disabled oit from setting an SES through LS1Edit. After tuning, I bet it would have gone away, but I still have it disabled since I know i don't have any real misfire going on.

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