Cyl. 3 misfiring - what to do? - TCCoA Forums
 
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post #1 of 3 (permalink) Old 01-11-2007, 07:08 AM Thread Starter
 
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Cyl. 3 misfiring - what to do?

I have a 97 Cougar XR7 8cyl. The other day it started running rough. The next day the check engine light came on. I had the code read and it has several "Cyl. 3 misfires".

My questions:

Which cylinder is # 3 ( I bought a plug to replace )?

If it is the plug, what could cause it to go bad (their about 2-3 years old)?

If it's not the plug, what else could it be (Besides the plug wire)?


Thanks for any help!
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post #2 of 3 (permalink) Old 01-11-2007, 01:44 PM
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Well, you kinda posted this in the wrong section, so maybe a mod can move this later. But to answer your question, cylinder #3 is the third one back from the front of the engine on the passenger side. If I were you, I wouldn't replace just one single plug. There's just a lack of balance to the engine. It could be the plug, but I would suspect that it is the plug wires or the coil pack. How old are the plug wires and how many miles do they have on them?

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post #3 of 3 (permalink) Old 01-11-2007, 01:52 PM Thread Starter
 
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Plugs are about 4-5 years old

My plugs and wires are about 4-5 years old. There's maybe 40,000 miles on them. I put in good quality plugs nad wires when I did them.


Thanks for the info on which plug is #3. Hopefully I will get a chance to look at it tonight.


Thank again!
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