P0352 cant find cause

[ixtlan]

Keep getting this code intermittently.
Changed the coil and looked for a bad wire to the coil but cant seem to find anything.
I changed the plugs recently and put the E3 plugs in.
Started after that but just the number 2 cyl.
I clear the codes and it comes back after a couple days.

Could the plug have anything to do with it?

Lost where to look for a problem.

 

[AlbertD]

When you removed the connector from the COP, did you pull up on the wires? Maybe a wire isn't making contact with the pin within the pigtail.

Did you probe the COP wires with a multimeter to ensure that they are indeed receiving voltage?

I doubt it is the plug, but you could always buy another plug and swap it in to see if the problem goes away.

 

[ixtlan]

I did pull on the wires but not so hard as to pull the wires out (I think anyway).
That cylinder is a tough one.
What kind of voltage would I see across the wires?
Engine running?
I did shoot the ground wire to ground and massaged the bundle so I think it is GTG.

Car doesn't seem to run rough so I dont think it is actually missing.
Does anyone have the pinpoint test JF and JE the manual mentions?
Details may help me troubleshoot it.

 

[JeremyH]

Those e3 plugs don't have the best rep. Did the problem come after the plug swap?

 

[JEWC_Motorsports]

Def get the E3's out of there and put in Autolites or Motorcrafts.

 

[ixtlan]

Issue did show after the plug change.
I dont think the plug is the issue since it is one cylinder.
When I can i will look hard at the connector again.
Does anyone know how to check the power side of the COP?
The manual says use pinpoint check JF and JE.
But I dont have access to those checks.

 

[86GT351]

Issue did show after the plug change.
I dont think the plug is the issue since it is one cylinder.
When I can i will look hard at the connector again.
Does anyone know how to check the power side of the COP?
The manual says use pinpoint check JF and JE.
But I dont have access to those checks.

One cylinder can mean you just got 1 bad plug. Take your loss on the E3s and get some good plugs in there. Even if it is not the issue you have a real spark plug with positive results. Once you change the plugs swap a coil to the next cylider. That is a quick way to see if it is a coil issue.

 

[ixtlan]

I dug in today again and discovered the internal part of the connector was pushed back into the receptacle a bit.
Dug it out and reconnected.
Tomorrow will tell for sure.
Forest for the trees?
We will see.

Question on plugs.
Have the AL/MC plugs gone one piece now?
That was my main reason for going E3 to start with.
Champions are trash...

 

[AlbertD]

Hopefully that will cure the issue. The reason I brought up "pulling on the wires" is because I did that at one point with the TB connector. Car was acting up regardless of throttle position and it took me days to figure out that one of the pins within the pigtail was recessed to the point where it wasn't making contact. Ugh, what a pain.

I would also recommend just sticking with Motorcraft or Autolite plugs. I believe they are still two piece, but as long as you put some antiseize on them upon reinstalling you won't have any issues. I never had one break on my 06 and I went over 125k miles on that bad boy. Changed the plugs every 15k or so (heavily drag raced).

 

[05gtowner]

Stick with motorcraft. Use antiseize and you are fine. E3's are a solution to a problem that doesn't exist.

 

[Boaisy]

Definitely throw out the E3's. What sells them is good marketing, not their performance. Almost any type of plug they sell for any car, they either have a plug or two that are bad in a set, or perform worse than stock.

Both MC and AL are supposed to have "improved" plugs over what was put into the motors from the factory.

As stated earlier, anti-seize does wonders if you don't want to have issues on the next replacement.

 

[BruceH]

I dug in today again and discovered the internal part of the connector was pushed back into the receptacle a bit.
Dug it out and reconnected.
Tomorrow will tell for sure.
Forest for the trees?
We will see.

Question on plugs.
Have the AL/MC plugs gone one piece now?
That was my main reason for going E3 to start with.
Champions are trash...

Like the others have said stick with Motorcraft or Autolite. Forget what you read about them being crappy, they are the best plug for the motor. The original problem was fixed by nickel coating iirc. Antisieze the barrel portion prior to installation. The threads already have it from the factory. Too much antisieze on the threads will increase the applied torque because the threads don't have the same friction with extra lube applied.

 

[Pentalab]

Brisk also makes a 1 piece plug to fit the older mustangs.

 

[ixtlan]

Well it turned out to be the spark plug.
Should have went there from the get go.
Anyway I will be warranting the set and go with the Autolights.
What a pain in the arse!!
Live and learn....

Thanks all for the assist in everything.
S197 is the place for knowledge NO DOUBT.

 

[BruceH]

Well it turned out to be the spark plug.
Should have went there from the get go.
Anyway I will be warranting the set and go with the Autolights.
What a pain in the arse!!
Live and learn....

Thanks all for the assist in everything.
S197 is the place for knowledge NO DOUBT.

Glad you have it figured out. The only consistently reliable ht (high thread) plug has been the stock Ford/Autolite. Stick with them and you will be ok spark plug wise.