Cop issue... circuit malfunction - Ford Mustang Forum
 
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post #1 of 5 (permalink) Old 11-20-2013 Thread Starter
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Cop issue... circuit malfunction

Hey dudes...

So we all know I got water in my coil packs. .. really messed with my plugs.. I cleaned it all up.. regapped... and such. Car has driven aboit 250 miles.. now the service light comes on and it reads cop 0355 circuit malfunction primary/secondary E.. pack #4 was the wetest....


The scanner also reports misfire check in the I/m log as ok...


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post #2 of 5 (permalink) Old 11-20-2013 Thread Starter
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I cleared the code last night with autozones scan tool. The code I get back
0355 is coil pack failer on cyl #5 (first cylinder drivers side closest to the radiator)
But the "E" if relates to firing order? I believe thats actually cop #6.
The connector clip is broke on #5.
Our other car has a major issue.. so we drove the mustang to work... and after my wife dropped me off she said the service engine light started flashing... but the car drove fine to her work 13 miles. She let it idle in the parking lot... and said it idled ok.. to her it seemed a little rough... the service engine soon light stayed solid. No sputtering or stalling.
After she turned the car off she smelt the sweet coolant smell.
Really getting tired of this bs

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post #3 of 5 (permalink) Old 11-20-2013
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I would go ahead and replace all the c.o.p's and I think that will help since the code said cop failure. When the car is idling smell the exhaust and maybe rev it up a bit and if it smokes and smells sweet you could be getting coolant in the cylinders causing a misfire ?


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post #4 of 5 (permalink) Old 11-20-2013
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Oh and maybe try switching the #5 and 6 cop with other cylinders to see if the misfire follows the c.o.p's if so then you know it's them for sure.


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post #5 of 5 (permalink) Old 11-21-2013
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Had the SAME thing happen to me about a month ago. My Coolant temp sensor blew out of the intake manifold (2001 NON-aluminum crossover, you know how that goes) and got coolant all over my engine and deep into the spark plug wells.

I used a air compressor to blow out all the coolant from the wells and replaced all the COPs with MSD blasters which are ~300$ anywhere except AmericanMuscle which prices them at 380$ for some reason..

Anyway with the new COPs the engine is running great. No more misfire under load, no more sputtering uphill, no more CEL, and most importantly, no more coolant smell.

Petunia - 05 Mustang 4.0 - Waiting for little brother to come of age

Matilda - 01 Cobra 4V 4.6 - SOLD

Bernadine - 09 Mustang 3V 4.6 - Daily Driver
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