2004 Mazda Tribute V6 misfire.

Asked by Nov 19, 2016 at 12:38 AM about the 2004 Mazda Tribute LX V6 4WD

Question type: Maintenance & Repair

Hi all.

I have a 2004 V6 Mazda Tribute that has no spark to number 4 cylinder. It is not
a spark plug or coil issue as I can swap the plugs and coils around and get
spark on other cylinders ok, just not number 4. I have replaced the PCM and still
no better and tested the wiring back to the PCM. I am getting 12 volts to the coil
on the positive wire and continuity ok on the negitive back to the pcm
connector.
I have compared the voltage and resistance to a known good coil connector
and the only difference I'm seeing is that on the negetive wire is that it's not
opening and closing the curcuit (switching from 0 ohms to open circuit) like it
seems to be doing on the other coils while the engine is running. This reading
made me think that the PCM was faulty. But obviously not.
Has anyone had this issue before or can offer any ideas of where to look to
next?

1 Answer

Hi all. I was able to nut it out myself. I found the earth pin in the multipin connector to the PCM to be open circuit. It was tricky to find as testing it with an ohm meter probe into the connector itself and the earth connection to the coil pack tested fine. It wasn't until I opened up the PCM and tested the corresponding solder connection on the PCB to the coil connector it showed open cicuit. I decided to replace the main engine harness ($50 from a wrecker and 3 hours later in my garage) and the engine ran like new again. Just thought this might help someone out as this issue was a bugger to find. The misfire was intermittent at first until the connection eventually let go.

Your Answer

Mazda Tribute Experts

  • #1
    Tom Demyan
    Reputation
    1,040
  • #2
    Js08016
    Reputation
    260
  • #3
    Reelin68
    Reputation
    230
View All

Related Models For Sale

Used Ford Escape
1,067 Great Deals out of 85,912 listings starting at $1,188
Used Honda CR-V
794 Great Deals out of 53,611 listings starting at $1,750
Used Toyota RAV4
805 Great Deals out of 50,364 listings starting at $1,500
Used Honda Pilot
465 Great Deals out of 29,524 listings starting at $1,444
Used Mercury Mariner
51 Great Deals out of 1,265 listings starting at $1,999
Used Mazda MAZDA3
321 Great Deals out of 26,231 listings starting at $950
Used Toyota 4Runner
283 Great Deals out of 21,359 listings starting at $1,700
Used Subaru Forester
403 Great Deals out of 33,627 listings starting at $1,295
Used Kia Sorento
480 Great Deals out of 28,621 listings starting at $1,999
Used Chevrolet Equinox
978 Great Deals out of 70,006 listings starting at $1,950
Used Nissan Murano
341 Great Deals out of 23,749 listings starting at $1,500
Used Hyundai Santa Fe
259 Great Deals out of 13,818 listings starting at $1,995

Used Cars For Sale

2011 Mazda Tribute For Sale
28 listings starting at $5,950
2010 Mazda Tribute For Sale
26 listings starting at $3,991
2009 Mazda Tribute For Sale
29 listings starting at $5,950
2008 Mazda Tribute For Sale
4 Great Deals out of 122 listings starting at $3,800
2006 Mazda Tribute For Sale
3 Great Deals out of 120 listings starting at $1,990

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.