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Need some troubleshooting suggestions.

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Old Mar 13, 2009 | 10:46 AM
  #11 (permalink)  
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#8 isn't fouled at all, but there was that pool of coolant in the spark plug well again. I think that is the problem. I would bet that the intake has a leak and that is why it ran well after I changed the plugs but slowly got worse as I drove it and it got hot. If that plug wire is submerged in coolant, it would give me a slight misfire, no? There is a wee bit of moisture around the intake in that area as well.
Yup, I ran it with the #8 coil pack disconnected and it ran about the same. Then I reconnected it and disconnected another and it ran worse. So I'm thinking I need a gasket and a coil pack.
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Old Mar 13, 2009 | 10:57 AM
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could have shorted out the coil pack with coolant although it's not a very good electrical conductor....

usually if the intake is leaking you get a lean code too, a ford scan tool with the cyl power balance test and fuel trim readings would really tell the tale but if you don't have access to that you'll just have to assume that's it

wouldn't surprise me if the intake was leaking though! don't get a used one, get a new one from ford unless you want the same problem again
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Old Mar 13, 2009 | 02:49 PM
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there is a way to test coils. the advance auto parts down the road from my house has done this for me a few time's. they have the diagram on there computer's on how to do so with a test light.
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Old Mar 13, 2009 | 05:37 PM
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testing a coils' resistance will not always show a failure you have to get them hot and put a load on them...

any updates?
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Old Mar 15, 2009 | 06:02 AM
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Well, I changed the intake gasket yesterday and realized in the process that there are no coolant passages anywhere near the #8 plug, so I am still wondering how that fills up with coolant/fluid. I also bought a new coil pack form Advance. However when I was all done, it felt the same. I am hoping that my buddy got the faulty coil mixed up with the good ones and if I swap around, I'll find it. I'll get to trying that after my wife gets home from work today at 3pm. I'll keep you posted.

This is starting to get annoying...
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Old Mar 15, 2009 | 09:07 AM
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its prolly cuz u have a camaro avatar... lol
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Old Mar 16, 2009 | 04:53 AM
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I replaced the faulty coil pack and it is running much better. The miss is gone, but it still isn't quite right. It is a beast off of the line, but when you get into the higher gears it lacks any real passing power and breaks up at no set RPM range.
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Old Mar 16, 2009 | 06:50 AM
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Could be it now has to unlearn some stuff it was doing when the computer was trying to compensate for the bad coil pack. If so, it should clear up with a little bit of driving around. If it doesn't clear up, then it's time to dig some more.
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Old Mar 16, 2009 | 07:02 AM
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Originally Posted by DrDirt
Could be it now has to unlearn some stuff it was doing when the computer was trying to compensate for the bad coil pack. If so, it should clear up with a little bit of driving around. If it doesn't clear up, then it's time to dig some more.
I hope you're right. However, after 25 miles, it isn't any better. I don't even know where to look now, I guess I might have to bring it in to someone with the proper diagnostic equipment.
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Old Mar 16, 2009 | 07:13 AM
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Try resetting the computer. Disconnect the battery for about 5 or 10 minutes and hook it back up again. It resets the computer in the process. Thats a good way to clear a trouble code too if you dont have any OBDII tuners or testers.
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