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Discussion Starter #1
I have 2008 mustang GT. My check engine light keeps coming on. When i read the code it comes up as p0304. It says misfire on cylinder 4 detected. Their is no difrence in the way the car is runing either. If i clear the coed it has came back 3 times. Any Sugestions.
 

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Being that it's an '08 (and likely under 60,000 miles), I'd suggest making it the dealerships problem and not yours.

Then again, if the problem really is with a "coed", they might not want to get involved.
;)
 

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Discussion Starter #3
I thought about taking it to a dealer but i dont wanna have to remove my nitrous system, or any other aftermarket parts i installed.
 

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Check the #4 coil. It might be failing. A good way to find out is to move that coil to another cylinder and see if the code follows it.
 
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