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  1. 2011 PCM question

    2010-2013 Mazda 3 Engine and Performance
    I'm new here and new to Mazda but hoping someone can help. I bought a 2011 Mazda 3 2.0 5spd manual with blown engine (57K without an oil change or check)... Local shop had a Mazda 2.5 with 27K he sold me reasonably. Engine is in but wont fire. Shop advised me to have it towed to stealership and...
  2. Can’t talk to PCM

    Engine / Drivetrain
    Long story short , I purchased this car not running. The owner blew out the clutch then over rev the engine spinning a rod bearing. I have replaced the clutch and the engine. ( I do this for a living ). Every wire is plugged up, all fuses seem ok and I have tested all relevant relays but I’m...
  3. 2007 Mazda 3, bad PCM?

    Engine / Drivetrain
    Hey all, I've been lurking for a while but this is my first post, so thanks in advance to anyone who replies, and sorry for the length! I've got a 2007 Mazda 3 that a couple of weeks ago failed to start. It cranked but failed, and then eventually succeeded after 10 minutes or so, but the check...

    2014-2018 Mazda 3 Skyactiv Discussion
    Hello Mazda 3 PCM REFLASHING How much does it cost?
  5. Ovtuning and epifan error after pcm recall and software update

    2014-2018 Mazda 3 Skyactiv Discussion
    So I have a huge issue that no one seems to know what to do. I had my car tuned last year with ovtune and everything went great and it ran amazing. I then had to get some stupid pcm recall that I know regret because nothing was even wrong with the car and it erased my tune. Now when I started...
  6. TRS Morimoto HID Kit Burned PCM?

    2014-2018 Mazda 3 Skyactiv Appearance & Interior
    Hello Guys, So i recently bought a 2015 Mazda 3, and my first "mod" was an HID Kit from TRS, it's the Morimot 55w Kit, with relay. So i followed the instructions, i connected the relay to a "ground" and the positive side to the battery ( i put it on top of the other cables on the positive) then...
  7. PCM failure causing engine stall June 12 -December 18 2013 TSB

    2014-2018 Mazda 3 Skyactiv Recalls / TSB / SSB
    Affected: Mazda3: JM1BM1***E1100061 -162638 VIN range Mazda6: JM1GJ1***E1 124523- 162747 JM1GJ1***F1 162851 - 163097 http://www-odi.nhtsa.dot.gov/acms/cs/jaxrs/download/doc/UCM453388/RCDNN-14V173-9524P.pdf Report Receipt Date: APR 03, 2014 NHTSA Campaign Number: 14V173000 Component(s)...
  8. PCM Flash and now lower MPG???

    2010-2013 Mazda 3 Engine and Performance
    I took my car in to the dealer on Thursday, 11-19-14 to have the PCM flashed to solve the flickering headlight issue described in TSB 01-019-13. (I also had the tires rotated.) Now my dash MPG gauge is showing that I am getting 5-6 less MPG than I was before. I was averaging around 37.0 mpg...
  9. ECU compatability question

    2004-2009 Mazda3 Audio & Electronics
    I have 2004 Mazda 3,2.3L, Manual transmission, Hatchback. The ECU has corroded/broken pins going to the throttle body and needs to be replaced, throttle body is limp. I'd like to find a used one to save $ and have it reprogrammed. My PN is L373 18 881C E6T52275H1. I found one very close in...
  10. PCM Cover

    2010-13 Mazdaspeed 3 Engine and Performance
    Hey guys, I took my speed 3 in for its first oil change, I bought it used. They noted that the PCM wiring cover is missing. Is there a place online that sells these or should I just ask the Mazda dealership to order it for me? I tried looking online and couldn't find it.