I have a 2002 Mazda millenia 2.5 it's showing a po303 code which is a misfire in cyl. 3 I've seen several different possible problems doing research on the net but I need a sure fire fix

Asked by Dec 02, 2013 at 10:35 AM about the 2002 Mazda Millenia 4 Dr Premium Sedan

Question type: Maintenance & Repair

I've been told that it may
be the cat but I'm really
not sure

1 Answer

24,995

It will need a Cat if you keep driving it with a miss-fire on the #3 cylinder. Probably a spark plug or plug wire. Catalytic Converters plug up - they do not trip miss-fire codes.

Your Answer

Add photo

Related Questions

Search Mazda Millenia Questions

Mazda Millenia Experts

#1 Steven Cisneros
Steven Cisneros
Reputation 730
#2 Keith12345
Keith12345
Reputation 420
#3 Tom Demyan
Tom Demyan
Reputation 230
View All

Related Models For Sale

Used Nissan Maxima
334 Great Deals out of 24,260 listings starting at $1,999
Used Acura TL
183 Great Deals out of 5,417 listings starting at $1,999
Used Honda Accord
1,043 Great Deals out of 67,783 listings starting at $1,000
Used Toyota Corolla
971 Great Deals out of 69,383 listings starting at $1,800
Used Mazda MAZDA6
198 Great Deals out of 14,675 listings starting at $1,395
Used Chevrolet Malibu
1,156 Great Deals out of 79,585 listings starting at $2,500
Used Mazda 626
208 listings
Used Mazda MX-5 Miata
77 Great Deals out of 3,955 listings starting at $1,800
Used Chevrolet Camaro
351 Great Deals out of 31,326 listings starting at $2,200
Used Nissan Pathfinder
329 Great Deals out of 22,242 listings starting at $2,500
Used Mazda Protege
223 listings
Used Acura RL
22 Great Deals out of 678 listings starting at $2,000
Used Ford Mustang
683 Great Deals out of 44,710 listings starting at $1,500

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.