2003 Mazda6 loss of power when accelerating

Asked by Oct 06, 2008 at 01:20 AM about the 2003 Mazda MAZDA6 4 Dr i Sedan

Question type: Maintenance & Repair

I have a 2003 Mazda6i that is very well-maintained and has about 130000 miles on it.  Recently, I have been experiencing a loss of power when accelerating on the freeway.  It seems like that it is taking a longer time for my car to build up speed than it used to.  I brought my car to the shop to have it checked but the mechanics say that there doesn't seem to be anything wrong with it.  They checked the serpentine belt, spark plugs, belt tensioning system and they said that those things check out fine.  I was wondering if you can help me out with this.  Thanks!

5 Answers

375

Have a exhaust shop check out your catalytic converter. As it ages it starts to crumble internally and clog it self up. If it is not taken care of it can blow down stream and fill the muffler or burn valves under the excess heat and strain.

3 of 3 people found this helpful.
30

MY friend the problem for your car is the coils, I have a Mazda 6 2004, and it was a mistake buy this car, I have that problem at 45,000miles, And I change the 6 coils 2 times, I recommend check the pressure of the each coil. AND so sorry you just star with the nightmare of Mazda 6.

3 of 3 people found this helpful.
30

I had the same problem and I took it to the shop and they said my cat was bad ( it was making noises) and my fuel pump went bad (twice now). I only have 39,000 miles on mine and I baby it. POS 2004 Mazda 6 V6.

3 of 3 people found this helpful.
30

Coil pack. I have a 2003 Mazda 6 two years ago, during a difficult year, I burned out my fuel pump from runnin out of gas so much. a couple weeks leading up to its dramatic demise, it would do ths exact same loss of power thing. seemingly random at first then more and more until I finally had to get a new fuel pump. Problem solved? Temporarily, For a couple months. then it started again (completely randomly too) for 3-10min at a time. then weeks went by of nothing, but then it started happening EVERY TIME AFTER 5-10MIN OF DRIVING. Mechanic discovered I needed a new coil pack $190 for the part. And I have never had that problem since (7months ago). Im not sure if that dieing fuel pump kickstarted it all but the coil pack replacement resolved it.

3 of 3 people found this helpful.
20

I had loss of power with my Mazda Demio. Turned out it was the high tension wires leading to the spark plugs, the rubber was split causing the electricity to short circuit. Wrapping it with electrical tape solved the problem until the wires could be replaced.

2 of 2 people found this helpful.

Your Answer

MAZDA6

Looking for a Used MAZDA6 in your area?

CarGurus has 13,412 nationwide MAZDA6 listings starting at $1,395.

ZIP:

Mazda MAZDA6 Experts

  • #1
    F_O_R
    Reputation
    260
  • #2
    enginecreator
    Reputation
    230
  • #3
    Tom Demyan
    Reputation
    220
View All

Related Models For Sale

Used Mazda MAZDA3
361 Great Deals out of 27,170 listings starting at $1,059
Used Honda Accord
997 Great Deals out of 62,552 listings starting at $999
Used Toyota Camry
1,073 Great Deals out of 72,796 listings starting at $1,000
Used Honda Civic
831 Great Deals out of 78,168 listings starting at $900
Used Nissan Altima
1,126 Great Deals out of 74,485 listings starting at $999
Used Nissan Maxima
329 Great Deals out of 23,618 listings starting at $1,750
Used Hyundai Sonata
749 Great Deals out of 47,177 listings starting at $199
Used Kia Optima
494 Great Deals out of 28,724 listings starting at $2,200
Used Chevrolet Malibu
1,246 Great Deals out of 77,953 listings starting at $1,500
Used BMW 3 Series
1,043 Great Deals out of 31,469 listings starting at $1,000
Used Toyota Corolla
937 Great Deals out of 65,938 listings starting at $1,995
Used Ford Mustang
740 Great Deals out of 42,668 listings starting at $1,300

Used Cars For Sale

2017 Mazda MAZDA6 For Sale
7 Great Deals out of 7,391 listings starting at $14,573
2016 Mazda MAZDA6 For Sale
31 Great Deals out of 1,171 listings starting at $10,299
2015 Mazda MAZDA6 For Sale
34 Great Deals out of 1,156 listings starting at $10,979
2014 Mazda MAZDA6 For Sale
47 Great Deals out of 1,058 listings starting at $7,899
2013 Mazda MAZDA6 For Sale
7 Great Deals out of 157 listings starting at $6,872

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.