P0303 Cylinder 3 Misfire
#1
P0303 Cylinder 3 Misfire
2006 TSX, yesterday i went to the store, when i pulled out the idle was erratic and it is definitely not running right.
Im in CA so shops won't scan for free so I bought a OBDII scanner and got code P0303.
Should I just start replacing coils? Any ideas of where to begin?
Fridge died three weeks ago, my daughter will be 2 in September and I have another daughter coming right around then...this repair wasn't really in the budget lol.
Thanks in advance
Im in CA so shops won't scan for free so I bought a OBDII scanner and got code P0303.
Should I just start replacing coils? Any ideas of where to begin?
Fridge died three weeks ago, my daughter will be 2 in September and I have another daughter coming right around then...this repair wasn't really in the budget lol.
Thanks in advance
#2
Senior Moderator
begin by check the cylinder 3 plug and/or coil
#3
What thoiboi said, could be plug and/or coil. Most likely the coil. I had my #2 died on me and it was about $100 in stores like autozone and o'reilly. I got my on amazon for about $60. If you can hold of driving for a bit, get it at amazon. Cheaper, looks OEM, and made in Japan. https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
#4
So i swapped the coils around and the misfire is still on cylinder 3.
Was going to swap out plugs but my extension wasn't long enough lol.
Will try the plug today/tonight and see how it goes.
Are the cylinders sequential? And is 1 on driver or passenger side?
i.e.
Passenger 4 3 2 1 Driver
or
Passenger 1 2 3 4 Driver
or are the like 1 3 2 4 or something weird?
Also best plug to go with is the NGKs?
Thanks
Was going to swap out plugs but my extension wasn't long enough lol.
Will try the plug today/tonight and see how it goes.
Are the cylinders sequential? And is 1 on driver or passenger side?
i.e.
Passenger 4 3 2 1 Driver
or
Passenger 1 2 3 4 Driver
or are the like 1 3 2 4 or something weird?
Also best plug to go with is the NGKs?
Thanks
#5
Senior Moderator
#9
Picked up 4 new spark plugs.
Going to swap out #3 during lunch and see if its any better. Plan on replacing them all but ill do the other 3 after work (hoping i get it fixed during lunch)
if it was an 02 sensor or something, i should be seeing codes in addition to the misfire, correct?
Going to swap out #3 during lunch and see if its any better. Plan on replacing them all but ill do the other 3 after work (hoping i get it fixed during lunch)
if it was an 02 sensor or something, i should be seeing codes in addition to the misfire, correct?
#10
Senior Moderator
Correct.
it could also be fuel-related but check spark first. then fuel then air maybe.
it could also be fuel-related but check spark first. then fuel then air maybe.
#11
Threw a spark plug in during lunch and it seems to be running way better.
Going to replace the other 3 after work and close everything up. Looks like it was just a worn plug...thought they were replaced recently but ill double check paperwork. Was clean, no oil, etc, just looked worn
Going to replace the other 3 after work and close everything up. Looks like it was just a worn plug...thought they were replaced recently but ill double check paperwork. Was clean, no oil, etc, just looked worn
#12
Senior Moderator
Good to hear
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