Platinum6point2

Definitely sounds like the coil packs. Any after market accessories like remote start? My brother had an after market remote start where the wire shorted out to the block and suddenly blew a coil pack.

vintageman

If you want to check the COPs and spark plugs, start the engine, unplug each coil pack one at a time and see if the idle changes (gets worse) or remains the same, if the idle changes when you unplug a coil pack, that one should be good, plug it back in and go on to the next. This could narrow coil packs/spark plugs down to the bad one(s). I cannot see all of them going out at once though.

Chris04FX4

So I swapped out the number three coil (third back on the pass side) with number 5 (first on the driver side). Cleared all the codes and restarted. Still getting the p0353. So I pulled both coils back out and checked both of their resistance. Neither were open and seemed to be okay. So I plugged in a spark plug tester. It is firing just fine. I can easily and clearly see a spark coming from the coil plugged in to the number 3 connector. So I swapped coils and repeated the test. Still got a good spark. So if I'm getting a spark, and the coil isn't bad, or at least seem to be, what the heck is the issue? Could it be that spark plug? Do I need a special spark plug tool to see because my spark plug socket doesn't fit. Any thoughts? Thanks.

Chris04FX4

The motor runs so bad that I can't noticable tell a difference unplugging any of the coils. However, if I leave one unplugged long enough it does set a code for that particular one. I'm really confused.

Chris04FX4

It did have a remote start system installed and I removed all of it. The only thing that had a connection under the hood was to a coil, but was to the number 6 coil and I fixed the wire when I removed the hack job they did.

Chris04FX4

So I went to pull the spark plug out....I don't think it broke but it didn't come out. It unscrewed just fine but when I went to pull it out, this collar looking thing came off but the plug is still in the hole. The ceramic isn't broken or anything. I'm really confused. I just put the collar back on and then screwed it back down.

vintageman

Sorry I didn't respond earlier, you definitely need to have the lisle tool on hand prior to trying to remove the plugs in the event that they break. Im pretty sure that autozone or oreillys will rent the tool to you on their loan-a-tool program. I haven't had a chance yet to look into the p0353 code but I will look in a few minutes so more to follow on that.
tom

vintageman

Found this on another forum with the same problem


well found the culprit it was the CD circut thanks jbrew it was broken right where you were saying on top of the accumulator. in working on this thing im of the belief most of the ford engineers should be shot in the head twice for some of the boneheaded component placement. just a slight rerout of that harness would prevent this prob


CD is the coil driver circuit. Check the wiring at the #3 cop that you were looking at, follow harness down to accumulator and check to see if it is touch it and if possible zip tie it away and check for damage.
Good luck, let us know how it goes.
Tom

Chris04FX4

Okay. I assume you mean down towards the front of the motor. Where is the accumulator located? Thanks again for all the help.

vintageman

check the ac canister next to the PCM area. if nothing, then possibly have a good look at the harness leaving cop 3