CEL - P0304 troubleshooting? 2005 MSM
#1
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CEL - P0304 troubleshooting? 2005 MSM
I posted this 31 hours ago on the MSM board. Of course there are no replies. I figure I'll get a few hits on here before I get home in the morning:
We are getting ready to take a little weekend vacation and haven't driven the MSM since Deals Gap (July). I fired it up today and it threw a P0304 (misfire on cyl#4). I am not around the car right now (haven't hardly been under the hood so I cannot remember what the COPs look like and how the wiring is) but my thoughts are to swap COPs (not sure which cyl# to swap it with) and see if I throw a code. If the code follows the COP I know it is a bad COP. If it doesn't then it might be the spark plug. Does this sound right? What else should I look at? Thanks!
We are getting ready to take a little weekend vacation and haven't driven the MSM since Deals Gap (July). I fired it up today and it threw a P0304 (misfire on cyl#4). I am not around the car right now (haven't hardly been under the hood so I cannot remember what the COPs look like and how the wiring is) but my thoughts are to swap COPs (not sure which cyl# to swap it with) and see if I throw a code. If the code follows the COP I know it is a bad COP. If it doesn't then it might be the spark plug. Does this sound right? What else should I look at? Thanks!
#4
I think the gas cap thing causes an EVAP code which is separate. A misfire in cylinder 4 is caused usually by ignition related components. Not knowing what you have done, I can't further stipulate. However, a cracked boot on your COP could cause this, as could a faulty plug, or a injector problem or vacuum leak in the area of the cyl4 runner could do such as well. A spark plug is cheap, soo... when you are switching coils around, switch it out. How many miles are on your current plugs?
#5
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Well, my wife must have a horseshoe up her ***. As I said, we are two days away from leaving town and the car wouldn't run. I swapped the coils and the code did not follow the swap. Then I swapped spark plug #1 and #4 and the code followed the swap. I can't see anything wrong with the plug but there must be a defect in it. Put in a set of NGK BKR5E-11 plugs (the best I could do on short notice) and the car runs fine.
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Yeah, I can live with them. If I start having problems I'll change them out.
$10 for an emergency fix isn't too bad!
The good news is that I picked up a Squier Mini at the pawn shop today (a rare one with a speaker <G>):
$10 for an emergency fix isn't too bad!
The good news is that I picked up a Squier Mini at the pawn shop today (a rare one with a speaker <G>):
#8
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Well, my wife must have a horseshoe up her ***. As I said, we are two days away from leaving town and the car wouldn't run. I swapped the coils and the code did not follow the swap. Then I swapped spark plug #1 and #4 and the code followed the swap. I can't see anything wrong with the plug but there must be a defect in it. Put in a set of NGK BKR5E-11 plugs (the best I could do on short notice) and the car runs fine.
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