I got the codes; P0300,P0301,P0302,P0303,P0304, p03050 - AcuraZine Community
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Old 06-06-2011, 4:33 PM   #1
smilecow
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I got the codes; P0300,P0301,P0302,P0303,P0304, p03050
My car is a 2003 actura tl type-s.

I got these codes P0300,P0301,P0302,P0303,P0304, 0305.
2 weeks ago.

I replaced spark plugs and wire with genuine parts but they came back. I repeated to install and the light usually came back in 1 days..

but the car is like a normal car that doesn't show any thing bad except the lights on.

plz give me some or any advice?

Is it possible that the timing belt is bad, or valve adjustment that I have not done?

thank you so much for your replies
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Old 06-06-2011, 7:44 PM   #2
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You replace the wire? or are you talking about the coil pack?
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Old 06-06-2011, 9:00 PM   #3
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we dont have spark plug wires

coil packs can be damaged if handled roughly-dropped- banged etc
You used ngk iridium or ngk platinum plugs???--about 8 dollars each

you are getting multi cyl misfire which usually means just 1 coil has failed
50 bucks,,fairly easy diy to figure out which one is bad

after new part installed:
reset the ECU by removing the CLOCK fuse on passenger end of dash for 1 minute
thats its secret backup power and clears all codes + forces a master relearn to see if all is well
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Old 06-06-2011, 9:00 PM   #4
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is it running just a little rough at idle now?
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Old 06-07-2011, 1:13 AM   #5
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thank you for your replies
I am sorry for misleanding. I didn't replace any wire, just the spark plugs which were the genuine parts at dealer. It's not rough at idle at all. It doesn't show any symptom. How can I check which coil is bad?
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Old 06-07-2011, 1:27 AM   #6
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One more question, what is the interval to change the coil pack?
my tl is on 180k
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Old 06-07-2011, 8:27 AM   #7
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Coil packs dont need to be replaced unless bad.

Best method is to buy 1 new coil pack start on one side of the motor, replace 1 coil pack with the new one (save the one you pulled off), go to the passenger side dash fuse panel pull the clock backup fuse for 30 seconds and then put back in and drive. If the code comes back, take the new coil pack from the cyl you put it on, and move it to the next cyl and put the old coil (the one said to save) back in its original position and repeat till you find the cyl that is causing the misfire. 99.9% of the time its just 1 pack causing the issue.
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Old 06-07-2011, 10:44 AM   #8
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or the cheater method--pull the power lead to one coil at a time, have helper note any rpm change with each one
the coil that doesnt result in rpm drop is the bad one
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Old 06-07-2011, 6:30 PM   #9
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thank you for your advice. I ordered the part so I'll post the result on thrusday.
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Old 06-07-2011, 6:30 PM
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0300, 0301, 0302, 2004, acura, code, engine, mdx, p0300, p0301, p0302, p0303, p0304, po300, rsx

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