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Discussion Starter · #1 ·
Hey i have a 2012 wrx, no power to coil number 1, any odeas of cause, replaced spark plug and oem coil, no power going to the coil.. the only coil affected is coil number one, also replaced the pig tail and still same result.. i am new to these cars, it is tuned and has a cobb intake and cnc catted down pipe.
 

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Manufacturers create a common tie point in the wiring harness for the four wires that feed each of the coils. You will have to trace the wire back through the harnesses until
You find the tie point. Along the way you might find a damaged wire or find that the tie point has a problem.
Shotgunning parts is not the right way to fix this type of problem. Good luck.
 

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Discussion Starter · #4 ·
I had todd Piche from ratchet customs help me thru the diagnosis, all cylinders had 135 psi, hot engine. Turns out it was a bad coil/spark plug they were the original 2012 coils and plugs.. thank you for you time and consideration..
 
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