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P0307 & P0357 error codes

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P0307 & P0357 error codes

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Old

Jul 15, 2014 | 11:04 AM

#1

BAMAGOLFER

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Melting Slicks

Joined: Nov 2002

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From: Al.

St. Jude Donor '06-'10-'11

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P0307 & P0357 error codes

So the beauty decided to throw a little hissy fit after a dyno day.
Engine running rough and the afore mentioned codes, that refer to cylinder #7. Also getting Service Active Handling on DIC
What I have done so far: checked the plug wire, looks ok but resistance is ~770 ohms. I have a set of MSD plug wires and they measured only ~28 ohms. My thought right now is a bad plug wire. But I don't know what is normal R for stock wire. Anyone know? Plus I'm thinking of just swapping out the MSD's with the stock wires. I mean 28 vs 770 has got to be better. Right? At least in the electrical world.

I did pull the plug and I think it looked ok. 15k miles on a NGK TR7ix.

I pulled the codes with my Inovo Scan tool but could not clear them. Is this something I have to pull a battery cable for 5-10 min, to clear?

Thanks
Kelly

Last edited by BAMAGOLFER; Jul 15, 2014 at 11:07 AM.

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Old

Jul 15, 2014 | 11:21 AM

#2

timd38

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From: Hudson WI

NCM Sinkhole Donor

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How old is the battery?

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Old

Jul 15, 2014 | 11:30 AM

#3

BAMAGOLFER

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Melting Slicks

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From: Al.

St. Jude Donor '06-'10-'11

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Quote:

Originally Posted by timd38

How old is the battery?

less than a year.

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Old

Jul 15, 2014 | 11:37 PM

#4

gmtech1234

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From: Phoenix area Arizona

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Check the plug, swap the wire with another cylinder, swap the coil with another cylinder. See if the missfire moves to donor cylinder.

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Old

Jul 16, 2014 | 08:47 AM

#5

BAMAGOLFER

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Melting Slicks

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From: Al.

St. Jude Donor '06-'10-'11

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Thanks GMTech!

I will try that this evening.

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Old

Jul 21, 2014 | 09:02 AM

#6

BAMAGOLFER

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Melting Slicks

Joined: Nov 2002

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From: Al.

St. Jude Donor '06-'10-'11

Default

A little update cause I know y'all are losing sleep over this.

Replaced all plugs and plug wires. Car is running smooth and no codes!

Thanks for the help and suggestions.

Kelly

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