2003 Expedition Misfire
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2003 Expedition Misfire
162,000 Miles
4.6l
I had a misfire on cylinder 8 (p0308 and p0316). I swapped the injector with cylinder 4 and reset. Same codes came back. I then swapped coil with cylinder 4 and reset. Now I have codes p300 and p0307, and no cylinder 8 codes. Any suggestions would be appreciated.
Thanks
4.6l
I had a misfire on cylinder 8 (p0308 and p0316). I swapped the injector with cylinder 4 and reset. Same codes came back. I then swapped coil with cylinder 4 and reset. Now I have codes p300 and p0307, and no cylinder 8 codes. Any suggestions would be appreciated.
Thanks
Postmaster
Joined: Sep 2010
Posts: 3,472
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From: Southern Cal
Here's a note on the 316 code..."If you own a Ford vehicle and you have a P0316 along with one of the other misfire codes, you should check for appropriate TSBs (technical service bulletins), as there are some TSBs that in part involve reprogramming the PCM. Doing that requires specialized equipment. Some Ford vehicles even needed a new cylinder head as a result of the valve. Regardless, if you have a Ford with multiple misfire codes including this one, check for TSBs."
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You may have pointed me in the right direction. I don't know how I got confused on the cylinder numbering. I looked it up on the internet and either read it wrong or saw an incorrect diagram. So what I actually did was: I moved the coil from cylinder 8 to 7 and the problem moved from 8 to 7. I just did not know number 7 was number 7. I will post after I replace the coil.
Thanks a lot for straightening me out on the cylinder numbering.
Thanks a lot for straightening me out on the cylinder numbering.
Postmaster
Joined: Sep 2010
Posts: 3,472
Likes: 2
From: Southern Cal
You may have pointed me in the right direction. I don't know how I got confused on the cylinder numbering. I looked it up on the internet and either read it wrong or saw an incorrect diagram. So what I actually did was: I moved the coil from cylinder 8 to 7 and the problem moved from 8 to 7. I just did not know number 7 was number 7. I will post after I replace the coil.
Thanks a lot for straightening me out on the cylinder numbering.
Thanks a lot for straightening me out on the cylinder numbering.
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Joined: Jun 2014
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I swapped the coil from #7 to #6. Now I have code P0174. It still feels like a a misfire, but there is no misfire code. Is it possible that the misfire code will come up after driving it a bit more. The code 0174 popped up very quickly - less than 50 miles of city driving.
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