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Old 07-25-2008, 09:06 AM
Schuby Schuby is offline
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PO307 0 Cylinder 7 misfire

my SES light came on the other day. Had 2 codes PO156 & PO307
PO156 is an O2 sensor BAnk2 / sensor 2...after the cat
I bought a new sensor- still have an SES light.
now I only have the PO307 which is cylinder 7 misfire...
Any ideas...
just replaced the plugs 5000 miles ago...
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Old 07-25-2008, 04:57 PM
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What year truck, model, engine, transmission? What plugs were installed 5K ago? Bottom line is check the plug, cop, and boot. Good luck!
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Old 07-25-2008, 05:26 PM
Schuby Schuby is offline
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4.6L 2000 manual tranny with motorcraft plugs
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Old 07-25-2008, 05:42 PM
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I believe that you were already referred to pay attention to the P0307 code and to check out the plug, cop, and boot. Time to get after it. Good luck!
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Old 07-25-2008, 05:45 PM
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http://www.ford-trucks.com/forums/76...and-po307.html
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Old 07-25-2008, 06:01 PM
Schuby Schuby is offline
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"I believe that you were already referred to pay attention to the P0307 code..."

whats up with that...I was just answering your question about my make & model, etc
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Old 07-25-2008, 07:36 PM
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It's either going to be an injector, plug/coil, or compression issue. Check the plug for damage. You can also change the #7 coil with another easy to reach coil. Say swap #7 with #1. Clear the codes and drive it around till the light comes on. Get the code scanned and if the code is now p0301(misfire #1), it's a COP. I know they say check the boots, but I work for a dealer. Just replace the whole coil. We've had to many that we've just replaced the boot(like ford says) and they came back misfiring shortly after. If the misfire stays, it's problably an injector(could still be compression issue though). Whatever you do, go Motorcraft parts(not aftermarket).....
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Old 07-25-2008, 10:52 PM
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Quote:
Originally Posted by Schuby View Post
"I believe that you were already referred to pay attention to the P0307 code..."

whats up with that...I was just answering your question about my make & model, etc
Just that is the second thread that you have started with the same subject and are getting the same responds from other members. Good luck finding your problem and getting it fixed.
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`02 F-150 King Ranch SuperCab
Charcoal Blue/Arizona Biege, 5.4L 3.55 LS, 4x2, Diablosport Predator Programmer, K&N filter.
FTE Ride of The Week, 4/20/09 !!!
`08 Mercury Sable Premier, 3.5L Duratec, 6 speed auto
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Old 07-25-2008, 10:52 PM
 
 
 
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